Compared to applications of large models such as prompt engineering and fine-tuning, the unique aspect of AI Agents lies in their ability to not only provide consultation to users but also to directly participate in decision-making and execution. The core of the Agent’s implementation is. This advancement hinges on the task planning, which is fully delegated to the AI large model. This is based on a premise: AI large models possess profound insights and perception of the world, rich memory storage, efficient task decomposition and strategy optimization, continuous self-reflection and inner contemplation, as well as skills in flexibly utilizing various tools.
Today, humans communicate with large models through dialogue, which is akin to the large model having only ears and mouth, capable of receiving textual information, yet lacking “eyes, ears, and limbs.” In this limitation, large models resemble a “brain in a vat.” In many scenarios, large models can only serve as advisors rather than play a decisive role in the development of affairs. When discussing the unique value of AI Agents, we inevitably touch upon their essential differences from large language models.
For AI large models to simulate human intelligence in complex interactions in the real world, it requires not only processing information but also perceiving the environment, making decisions, and executing tasks. AI large models need to integrate real-world interactions with sensory-motor predictions to achieve a higher level of artificial intelligence.
Firstly, AI Agents perceive their environment by receiving data from the external world (such as environmental sensing, user input, etc.). Through various sensors and IoT devices, AI can obtain information from the physical world, and through API interfaces, it can gather information from the digital world. This is equivalent to human sensory organs, forming the foundation for the agent’s connection with the world.
After processing and analyzing this data, AI needs to have certain memory capabilities to compare current environmental information with historical decisions. AI Agents need to possess decision-making capabilities, enabling them to plan the next steps based on the current environment and built-in goals, simulating possible outcomes in a simulated environment. This is similar to the human brain’s thought process, involving understanding, planning, and problem-solving abilities.
After making decisions, AI Agents need to translate those decisions into actual actions, which may involve controlling physical devices through mechanical actions or interacting with other systems through APIs and RPA. The results after execution are then used as new inputs, forming a closed-loop feedback system to ensure that the agent can adapt and optimize its behavior.
AI Agents are not only tools for processing information, but they are also intelligent entities with autonomous learning, adaptation, and innovation capabilities, capable of self-optimizing in complex and changing environments, effectively achieving their goals.
Next, we will break down the main modules of AI Agents, including perception module,
management and monitoring module, memory module, planning module, imagination/simulation module, native interaction module, learning module, execution module.
1. Perception Function
In artificial intelligence systems, the perception module (Perception Module) plays a crucial role. It serves as the bridge for AI to communicate with the external world, responsible for capturing, processing, and interpreting various signals in the environment. This module simulates the human sensory system, such as vision, hearing, and touch, allowing AI to “perceive” the surrounding world, understand the environment, and react accordingly.
The perception module collects information through various sensors and data interfaces. These sensors can include cameras, microphones, temperature sensors, humidity sensors, GPS locators, etc., used to capture images, sounds, temperature, location, and more. In the digital environment, data acquisition interfaces may involve web crawlers, API calls, database queries, etc., to obtain text, numbers, and other types of data.
The raw data collected often requires preprocessing before it can be used for subsequent analysis and understanding. Preprocessing steps may include noise removal, data normalization, feature extraction, etc. For example, preprocessing in image recognition may involve resizing images, adjusting contrast, edge detection, etc., to better identify objects within the images. In natural language processing (NLP), preprocessing may include tokenization, removing stop words, part-of-speech tagging, etc., to extract useful information.
After preprocessing, the data needs to be parsed and understood through more advanced analysis. This step may involve machine learning models and algorithms, such as deep learning and pattern recognition. Through these techniques, AI can recognize objects in images, understand the meaning of voice commands, analyze the emotional tendencies of text, and more. These capabilities enable AI to extract meaningful information from raw data and transform it into knowledge that can be used for decision-making and action.
For example, in autonomous driving, AI can utilize cameras, LiDAR, and microphones to collect information about the surrounding environment, using image recognition and object detection techniques to identify vehicles, pedestrians, traffic signs, etc., to achieve safe driving.
2. Configuration Management and Monitoring Module
Core Functions:
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Agent Generation Strategy: Combining random combination strategies and utilizing real-world personality statistics, psychology, and behavioral analysis data to create diverse AI agent profiles. These methods ensure the authenticity and diversity of agents while enhancing the system’s ability to simulate complex social interactions.
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Agent Role Definition and Management: Setting and managing the role characteristics of AI Agents, including their goals, capabilities, knowledge base, and behavior patterns. This allows each AI Agent to function according to its unique profile in specific environments, closely aligning with users’ real needs in thought and action, while also increasing system flexibility and diversity.
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Assessment Testing and AI Value Alignment: Through continuous testing and feedback loops, ensure that AI Agents’ behaviors align with human values and goals, avoiding adverse outcomes for users or society. Through constant performance evaluation, fine-tune the AI system to enhance its adaptability, accuracy, and user satisfaction.
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Manual Fine-Tuning: The manual fine-tuning function allows administrators to directly intervene and adjust the AI Agent’s neural network and knowledge system, enabling them to make detailed adjustments and optimizations to the AI’s behavior and decision-making logic for specific problems or scenarios.
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Performance Monitoring and Anomaly Handling: Real-time monitoring of the AI Agent’s operational status, promptly identifying and resolving performance declines, erroneous behaviors, or anomalies to ensure stable system operation. This includes tracking key performance indicators such as the AI Agent’s response time, accuracy, and resource consumption.
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Security Management: Ensuring the safety of the AI Agent during data processing and decision-making, preventing risks such as data leakage, malicious attacks, and abuse.
3. Memory Module

Sensory memory is the first stop for AI Agents to process raw input data, similar to human sensory information processing. It can briefly retain sensory data from the external environment, such as visual, auditory, or tactile information. Although the duration of this type of memory is very short, lasting only a few seconds, it forms the foundation for the agent’s quick responses to complex environments.
Short-term memory or working memory in AI corresponds to the model’s memory, processing the current stream of information. This type of memory is akin to human conscious processing, with a limited capacity, typically considered to be around seven items (according to Miller’s theory), and can last for 20 to 30 seconds. In large language models (such as Transformer models), the capacity of working memory is limited by its finite context window, which determines the amount of information the AI can directly “remember” and process.
Long-term memory provides the agent with an almost unlimited storage space for knowledge and experiences over extended periods. Long-term memory is divided into explicit memory and implicit memory subtypes. Explicit memory covers the memory of facts and events, which can be consciously recalled, including semantic memory (facts and concepts) and episodic memory (events and experiences). Implicit memory includes skills and habits, such as riding a bicycle or typing, which result from unconscious learning.
The long-term memory of AI Agents is typically implemented through external databases or knowledge bases, allowing the agent to quickly retrieve relevant information when needed. The challenge of this external vector storage implementation lies in how to efficiently organize and retrieve stored information. For this purpose, approximate nearest neighbor search (ANN) algorithms are widely used to optimize the information retrieval process, significantly improving retrieval speed even at the cost of some accuracy.
The design of the memory module has a decisive impact on the performance of AI Agents. An effective memory system not only enhances the agent’s ability to process and store information but also enables it to learn from past experiences, thus adapting to new environments and challenges. Additionally, research on memory modules raises deeper questions, such as how to balance memory capacity with retrieval efficiency and how to achieve memory persistence and reliability. In the future, as AI technology continues to advance, we can expect more efficient and flexible memory modules to provide agents with stronger learning and adaptation capabilities, thus unleashing greater potential in various complex environments.
4. Planning Function
Goal Setting and Analysis
Before formulating any action plan, it is first necessary to clarify the AI system’s goals. These goals may be predetermined or dynamically generated based on real-time data and environmental changes. Once the goals are established, the decision-making and planning module analyzes the information provided by the cognitive module, including the state of the environment, goal conditions, and available resources, to determine the best path to achieve the goals.
Understanding and Predicting the Environment
The decision-making and planning module needs to have a deep understanding of the environment, including the current state of the environment and its possible changes. In uncertain and dynamically changing environments, the module needs to assess external changes and how various factors affect future states. This challenge requires AI systems to utilize advanced data analysis techniques, machine learning models, and algorithms to conduct in-depth analysis of large amounts of historical data to predict potential changes in future environmental states. This capability is particularly critical in areas with high uncertainty, such as climate change and stock market fluctuations. By deeply understanding and accurately predicting the environment, AI can consider potential risks and opportunities when making decisions and planning, thereby formulating more robust action strategies.
Resource Consumption and Tool Evaluation:
The most suitable planning is always based on the premise of appropriate resource constraints. In the decision-making process, AI Agents must comprehensively evaluate multiple factors, including resource consumption, tool performance, and the costs required to execute tasks.
AI Agents need to conduct detailed analyses of available resources, similar to how humans compare prices, performance, and functionality before purchasing goods; AI needs to assess the resource consumption of different options before executing tasks. For instance, when performing mathematical operations, AI needs to consider whether to use a local calculator, write Python code for computation, or directly leverage the computational power of a neural network, as the resource consumption and running time of these methods may vary significantly. Choosing the most appropriate tool not only affects the speed and efficiency of calculations but also relates to the overall system’s energy consumption and cost-effectiveness.
Additionally, AI Agents need to evaluate different AI models, understanding their performance and resource consumption levels in various scenarios. AI Agents should be familiar with the characteristics of each model, such as their performance in specific tests, their ability to solve particular problems, and the memory and energy consumption required during reasoning, thereby treating AI large models as commonly used tools.
Decision-Making
Based on the understanding of goals and the environment, the decision-making and planning module will evaluate different action plans. This process involves weighing the pros and cons, risks, and benefits of various options, as well as their likelihood of achieving goals. In many cases, optimization algorithms are needed to find optimal or near-optimal solutions, which may include heuristic search, dynamic programming, Monte Carlo tree search, and other methods.
The diversity of AI planning capabilities is key to its ability to tackle complex tasks. We can roughly categorize them into two types: feedback-independent planning and feedback-based planning.
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Feedback-independent planning is typically used when the environment is relatively stable and predictable. For example, single-path reasoning executes tasks along a predetermined path, suitable for scenarios with predictable outcomes. In contrast, multi-path reasoning constructs a decision tree or graph, providing alternative options for different situations, thus increasing the flexibility of decision-making and the ability to respond to unexpected events.
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Feedback-based planning is suitable for scenarios requiring dynamic adjustments based on environmental feedback. This type of planning utilizes real-time data and feedback to reassess and adjust planning strategies to adapt to environmental changes. Feedback can stem from objective data of task execution results or subjective evaluations provided by auxiliary models.
Planning and Task Allocation
After determining the best action plan, the decision-making and planning module needs to translate this plan into specific planning and task allocation. This step is particularly important, especially in multi-agent systems, where it is necessary to consider how to efficiently coordinate the behaviors of each agent to ensure collective actions are coordinated and efficient. The task allocation process takes into account individual capabilities, resource distribution, timing arrangements, etc., to ensure the smooth implementation of the plan.
The Chain of Thought and Tree of Thoughts represent a progressive approach for AI in solving complex problems, simulating human thinking processes by breaking down a large task into multiple smaller tasks and solving these smaller tasks step by step to achieve the final goal. This method not only enhances the efficiency of problem-solving but also increases the innovativeness of solutions.
Additionally, the strategy of combining large models with planning demonstrates a new way to integrate AI technology with traditional planning methods. By transforming complex problems into PDDL (Planning Domain Definition Language), and then utilizing classic planners to solve them, this strategy can significantly improve the efficiency and feasibility of planning while ensuring the quality of solutions.
Dealing with Uncertainty and Dynamic Adjustments
The decision-making and planning module must also possess the ability to address environmental uncertainties and dynamic changes. This means that the AI system must be capable of monitoring changes in the environment and adjusting its action plans based on real-time information. In some cases, this may involve real-time decision adjustments or replanning when encountering unexpected situations. AI’s self-reflection and dynamic adjustment capabilities are core to its adaptability.
ReAct and Reflexion technologies demonstrate how AI can evaluate outcomes after actions and optimize itself based on these evaluations by integrating feedback loops during the planning process. The Chain of Hindsight (CoH) adjusts future planning strategies by analyzing past actions and results, improving the precision and efficiency of decision-making.
With the integration and application of more cutting-edge technologies, AI Agents will make greater strides in complexity management, decision optimization, and adaptive adjustments, bringing revolutionary changes to various industries.
5. Imagination/Simulation Module
In these “dreams,” the AI Agent may simulate a series of previously unencountered challenge scenarios, such as the entire process of establishing a base on Mars or designing a fully AI-managed ecosystem. It may also “dream” of interactions with new technologies or unknown life forms it may encounter in the future. In this process, AI will not only attempt to find solutions but also predict potential problems and explore how to optimize existing action plans.
Through this approach, the “Imagination/Simulation” module becomes a powerful learning tool. AI can test and improve its decision-making algorithms in dreams without worrying about the consequences of failures in the real world. This internal simulation process allows AI to be prepared for actual situations before encountering them. Furthermore, by exploring various possibilities in dreams, AI can discover new solutions and innovative methods that may never be touched in traditional learning environments.
Models like Sora, which generate text-based videos, provide a foundation for the AI’s “Imagination/Simulation” module, supporting the development of high-performance simulators for physical and digital worlds, providing a foundational basis for applications in game production, AR, and VR, marking a significant step toward the evolution of artificial intelligence toward higher levels of intelligence.
It not only allows AI to self-improve and evolve in a safe environment but also enables AI to understand and predict the behavior of complex systems more deeply. The future AI will not only be a tool for executing tasks but will become intelligent entities capable of self-reflection, innovation, and dreaming, interacting and coexisting with human society in entirely new ways.
6. Native Interaction Module (Interaction Module)
The interaction module serves as the native communication tool for AI Agents, similar to human speech, eye contact, and body language in natural communication. It is primarily responsible for handling direct communication between AI and users or other systems, ensuring both parties can effectively and accurately understand each other’s intentions and needs. This module typically encompasses natural language processing technologies for parsing the meanings of human language and generating responsive language output; it may also include visual and auditory recognition technologies, enabling AI to understand non-verbal communication signals.
Through natural language processing, AI can understand and generate human language, including text and speech, allowing for natural interaction with users. Computer vision enables AI to “see” and comprehend visual information, recognizing users’ gestures, expressions, and other non-verbal signals. Speech recognition and generation technologies provide users with intuitive and convenient interaction methods. Multimodal interaction design integrates text, speech, and visual information, enhancing the naturalness and flexibility of interactions. Meanwhile, contextual understanding capabilities allow AI to make more precise and personalized responses based on conversation history, user preferences, and other information. The interaction module enables AI to engage in natural and direct communication with humans or other AIs, gaining more information during communication, achieving a better understanding of tasks, and making better judgments and plans.
7. Learning Module
By combining the functionalities of the planning module with the learning module, a highly flexible and adaptive system can be formed. In this system, the planning module not only formulates action plans based on the current learning model but also adjusts plans based on actual results and feedback during execution. Meanwhile, the learning module analyzes the effectiveness of the planning execution, adjusting its learning algorithms and internal models to optimize future planning and decision-making processes.
In the path to achieving a general Agent, it is first necessary to establish the ability to perform stably in specific scenarios, and then continuously expand the interaction between the learning module and the planning module, enabling the Agent to adapt to a broader range of environments and tasks. For example, when learning mathematics, we often memorize the multiplication table in the initial stages. If every math problem requires computational methods to solve, it consumes considerable cognitive resources. By memorizing, we can store common mathematical operations in our short-term memory module for quick recall when needed, thus saving energy consumption. With continuous practice, common mathematical operations become ingrained in our neural pathways, allowing us to provide rapid answers without complex thought processes. For AI Agents, this process is akin to fine-tuning their internal models through experiential learning and repeated practice, thus executing tasks more efficiently, effectively programming common task planning capabilities into their internal systems.
Another crucial direction for AI learning is to learn how to use external tools to accomplish specific tasks with lower energy consumption. When AI begins to encounter a new tool or another AI Agent, it first needs to understand the basic functions and operational methods of this new “object.” This step is similar to the exploratory phase humans go through when first learning to use a tool. AI learns through observation, experimentation, and drawing lessons from past experiences, gradually building a preliminary understanding of the behavior of tools or partners. This process may involve extensive trial and error, but it provides valuable learning opportunities for AI. Through continuous practice and environmental feedback, AI begins to formulate more complex strategies to efficiently utilize tools or collaborate with other AIs. It may discover that specific combinations of tools can solve previously insurmountable problems or that collaboration with specific AI Agents can significantly enhance task completion efficiency and quality.
AI learning is not limited to single tasks or environments but demonstrates an understanding of learning strategies themselves, learning how to learn effectively. They begin to identify which learning methods are most effective and which need adjustment; this self-reflective ability allows AI to optimize in response to continuously changing challenges. Furthermore, when AI can share its learned knowledge and experiences, the overall progress of the AI community will accelerate significantly. This knowledge-sharing mechanism not only speeds up the growth of individual AIs but also propels the advancement of the entire field. When AI systems master how to flexibly utilize various tools and resources, as well as how to efficiently collaborate with other intelligent entities, they will be able to handle more complex problems and tasks, showcasing unprecedented innovation and problem-solving capabilities.
8. Execution Module (Execution Module)
The tool usage and collaboration capabilities of AI agents are a topic of significant interest. What sets humans apart is our ability to create, modify, and utilize external tools to accomplish tasks beyond our physiological capabilities; the use of tools may be the most notable characteristic distinguishing humans from animals. Nowadays, researchers are dedicated to endowing AI agents with similar capabilities to expand the application range and intelligence level of models.
Recent research indicates that providing language models (LLMs) with the ability to use external tools can significantly enhance their performance. For example, some research teams have utilized the “Modular Reasoning, Knowledge and Language” (MRKL) system, combining LLMs with various expert modules, enabling them to call external tools such as mathematical calculators, currency converters, and weather APIs. These modules can be neural network models or symbolic models, thus offering LLMs more tool choices to address task requirements across different domains. For instance, the following open-source tools provide a range of IT tools for large models to call.
https://github.com/CorentinTh/it-tools
However, despite the enormous potential that external tool usage brings to AI agents, there are also challenges in practical applications. Some studies have found that LLMs encounter difficulties in handling verbal mathematical problems, indicating the importance of knowing when and how to use external tools. Therefore, researchers have proposed new methods, such as “Tool Augmented Language Models” (TALMs) and “Toolformer,” to help LLMs learn how to use external tool APIs. These methods improve the quality of model outputs based on newly added API call annotations by expanding the dataset.
On the other hand, practical applications continue to emerge, such as ChatGPT plugins and OpenAI API function calls, showcasing the exceptional potential of LLMs in utilizing external tools. For example, in April 2023, a joint team from Zhejiang University and Microsoft released HuggingGPT, a framework that utilizes ChatGPT as a task planner, selecting the most appropriate model based on the descriptions of models on the HuggingFace platform and summarizing responses based on execution results.
Paper Address: https://arxiv.org/abs/2303.17580
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Task Planning: Using ChatGPT to obtain user requests;
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Model Selection: Choosing a model based on the function descriptions in HuggingFace and executing the AI task with the selected model;
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Task Execution: Summarizing the task executed using the model selected in step 2 and returning the response to ChatGPT;
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Answer Generation: Using ChatGPT to integrate the reasoning of all models to generate an answer to return to the user.
To better evaluate the performance of tool-augmented LLMs, researchers have proposed the API-Bank benchmark, which includes 53 commonly used API tools and 264 dialogue annotations with 568 API calls. The API-Bank benchmark evaluates the tool usage capabilities of agents at three levels: the ability to call APIs, retrieve APIs, and plan APIs. This benchmark provides an effective method for assessing LLMs’ tool usage abilities at different levels. ToolLLM has collected over 16,000 real-world APIs and generated relevant tool usage evaluation benchmarks, open-sourcing the LLaMA model trained on this dataset.
Paper Address: https://arxiv.org/pdf/2304.08244.pdf
In the future, the tool usage and collaboration capabilities of AI agents will become an important research direction in the field of artificial intelligence. Through continuous exploration and innovation, we hope to endow AI agents with smarter and more flexible tool usage abilities, thereby achieving broader applications and higher levels of intelligent performance.
Summary and Reflection
From 2017 to 2021, the SaaS product market rapidly developed, with many excellent SaaS products focusing on specific functions emerging one after another. However, the integration of these outstanding SaaS products with traditional on-premises applications in large enterprises has become a significant challenge faced by businesses. To address this pain point, companies have begun adopting API (Application Programming Interface) and RPA (Robotic Process Automation) technologies, which allow different SaaS products to connect quickly, forming a unified IT architecture and avoiding the formation of application and data silos.
During the SaaS boom, API and RPA became not just technical tools but also focal points in the market. For example, in the API domain, MuleSoft was acquired by Salesforce for $6.5 billion on November 15, 2019, while Zapier developed into an industry star valued at over $4 billion with just $1.3 million in funding. In the RPA domain, companies like Uipath and Appian also achieved rapid growth through IPOs. Although these companies’ revenues are still significantly increasing, their valuations have seen considerable corrections as the SaaS wave gradually recedes.
Today, in the era of large models, API and RPA technologies are endowed with deeper missions. They are no longer merely bridges connecting systems but have transformed into the “hands and feet” of AI large models, playing more critical roles in data integration, process automation, and intelligent decision support. API and RPA technologies enable AI large models to effectively utilize various existing software and systems, such as ERP systems, enterprise chat systems, and SaaS systems, creating a new collaborative and production system driven by intelligent agents without requiring enterprises to reinvest substantial funds to rebuild all previous software.
Through deep integration with AI technology, API and RPA can enhance operational efficiency and significantly promote innovation, bringing unprecedented competitive advantages to enterprises. Will the next spring of API and RPA arrive soon?