Best AI Agent Frameworks for Python

LangChain provides a comprehensive framework that empowers developers to build and scale intelligent applications using large language models (LLMs). By integrating data and APIs, LangChain enables context-aware applications that can perform reasoning tasks. The suite includes LangGraph, a tool for orchestrating complex workflows, and LangSmith, a platform for monitoring and optimizing LLM-driven agents. LangChain supports the full lifecycle of LLM applications, offering tools to handle everything from initial design and deployment to post-launch performance management. Its flexibility makes it an ideal solution for businesses looking to enhance their applications with AI-powered reasoning and automation.

Achieve enhanced precision and control through LangGraph, enabling the creation of agents capable of efficiently managing intricate tasks. The LangGraph Platform facilitates the development and scaling of agent-driven applications. With its adaptable framework, LangGraph accommodates various control mechanisms, including single-agent, multi-agent, hierarchical, and sequential flows, effectively addressing intricate real-world challenges. Reliability is guaranteed by the straightforward integration of moderation and quality loops, which ensure agents remain focused on their objectives. Additionally, LangGraph Platform allows you to create templates for your cognitive architecture, making it simple to configure tools, prompts, and models using LangGraph Platform Assistants. Featuring inherent statefulness, LangGraph agents work in tandem with humans by drafting work for review and awaiting approval prior to executing actions. Users can easily monitor the agent’s decisions, and the "time-travel" feature enables rolling back to revisit and amend previous actions for a more accurate outcome. This flexibility ensures that the agents not only perform tasks effectively but also adapt to changing requirements and feedback.

Riff is an enterprise AI platform that enables organizations to build, deploy, and scale intelligent agents for automating critical business operations. It focuses on handling “deep work” tasks such as reconciliation, exception handling, and decision-making across workflows like procurement, finance, and order-to-cash. The platform integrates seamlessly with major enterprise systems including SAP, Oracle, Salesforce, Microsoft Dynamics, and data platforms like Snowflake and Databricks. Riff allows businesses to go from concept to production in weeks, significantly reducing implementation time. It follows a structured approach where business teams define value, IT ensures governance, and domain experts build solutions. The platform generates full-stack AI workflows using standard technologies like Python and FastAPI. It ensures secure deployment with audit-ready code and compliance with standards such as SOC 2, ISO 27001, and GDPR. Riff also provides tools for monitoring, governance, and lifecycle management of AI agents. Organizations can measure ROI through real-time operational improvements and efficiency gains. Overall, Riff enables enterprises to operationalize AI quickly while maintaining control, security, and scalability.

Semantic Kernel is an open-source development toolkit that facilitates the creation of AI agents and the integration of cutting-edge AI models into applications written in C#, Python, or Java. This efficient middleware accelerates the deployment of robust enterprise solutions. Companies like Microsoft and other Fortune 500 firms are taking advantage of Semantic Kernel's flexibility, modularity, and observability. With built-in security features such as telemetry support, hooks, and filters, developers can confidently provide responsible AI solutions at scale. The support for versions 1.0 and above across C#, Python, and Java ensures reliability and a commitment to maintaining non-breaking changes. Existing chat-based APIs can be effortlessly enhanced to include additional modalities such as voice and video, making the toolkit highly adaptable. Semantic Kernel is crafted to be future-proof, ensuring seamless integration with the latest AI models as technology evolves, thus maintaining its relevance in the rapidly changing landscape of artificial intelligence. This forward-thinking design empowers developers to innovate without fear of obsolescence.

PydanticAI is an innovative framework crafted in Python that aims to facilitate the creation of high-quality applications leveraging generative AI technologies. Developed by the creators of Pydantic, this framework connects effortlessly with leading AI models such as OpenAI, Anthropic, and Gemini. It features a type-safe architecture, enabling real-time debugging and performance tracking through the Pydantic Logfire system. By utilizing Pydantic for output validation, PydanticAI guarantees structured and consistent responses from models. Additionally, the framework incorporates a dependency injection system, which aids in the iterative process of development and testing, and allows for the streaming of LLM outputs to support quick validation. Perfectly suited for AI-centric initiatives, PydanticAI promotes an adaptable and efficient composition of agents while adhering to established Python best practices. Ultimately, the goal behind PydanticAI is to replicate the user-friendly experience of FastAPI in the realm of generative AI application development, thereby enhancing the overall workflow for developers.

Agno is a streamlined framework designed for creating agents equipped with memory, knowledge, tools, and reasoning capabilities. It allows developers to construct a variety of agents, including reasoning agents, multimodal agents, teams of agents, and comprehensive agent workflows. Additionally, Agno features an attractive user interface that facilitates communication with agents and includes tools for performance monitoring and evaluation. Being model-agnostic, it ensures a consistent interface across more than 23 model providers, eliminating the risk of vendor lock-in. Agents can be instantiated in roughly 2μs on average, which is about 10,000 times quicker than LangGraph, while consuming an average of only 3.75KiB of memory—50 times less than LangGraph. The framework prioritizes reasoning, enabling agents to engage in "thinking" and "analysis" through reasoning models, ReasoningTools, or a tailored CoT+Tool-use method. Furthermore, Agno supports native multimodality, allowing agents to handle various inputs and outputs such as text, images, audio, and video. The framework's sophisticated multi-agent architecture encompasses three operational modes: route, collaborate, and coordinate, enhancing the flexibility and effectiveness of agent interactions. By integrating these features, Agno provides a robust platform for developing intelligent agents that can adapt to diverse tasks and scenarios.

Swarm is an innovative educational framework created by OpenAI that aims to investigate the orchestration of lightweight, ergonomic multi-agent systems. Its design prioritizes scalability and customization, making it ideal for environments where numerous independent tasks and instructions are difficult to encapsulate within a single prompt. Operating solely on the client side, Swarm, like the Chat Completions API it leverages, maintains a stateless design, which enables the development of scalable and practical solutions without a significant learning curve. Unlike the assistants found in the assistants API, Swarm agents, despite their similar naming for ease of use, function independently and have no connection to those assistants. The framework provides various examples that cover essential concepts such as setup, function execution, handoffs, and context variables, as well as more intricate applications, including a multi-agent configuration specifically designed to manage diverse customer service inquiries within the airline industry. This versatility allows users to harness the potential of multi-agent interactions in various contexts effectively.

The OpenAI Agents SDK allows developers to create agent-based AI applications in a streamlined and user-friendly manner, minimizing unnecessary complexities. This SDK serves as a polished enhancement of our earlier agent experimentation project, Swarm. It features a concise set of core components: agents, which are large language models (LLMs) with specific instructions and tools; handoffs, which facilitate task delegation among agents; and guardrails, which ensure that agent inputs are properly validated. By leveraging Python alongside these components, users can craft intricate interactions between tools and agents, making it feasible to develop practical applications without encountering a steep learning curve. Furthermore, the SDK includes integrated tracing capabilities that enable users to visualize, debug, and assess their agent workflows, as well as refine models tailored to their specific needs. This combination of features makes the Agents SDK an invaluable resource for developers aiming to harness the power of AI effectively.

Cua is a unified infrastructure for building and deploying computer-use AI agents that interact directly with operating systems and applications. Instead of automating through integrations, Cua agents work visually—understanding interfaces, clicking UI elements, typing text, and navigating software naturally. The platform supports Linux, Windows, and macOS sandboxes with cloud-based scaling. Developers can run agents via a managed UI or integrate them programmatically using the Python Agent SDK. Cua also provides dataset generation, trajectory recording, and benchmarking tools to train and evaluate agents. With pay-as-you-go pricing and smart model routing, Cua balances performance and cost efficiently. It is fully open source and designed for production-grade automation.

AgentSea stands as an innovative open-source platform that facilitates the seamless creation, deployment, and sharing of AI agents. It provides a robust set of libraries and tools aimed at developing AI applications, adhering to the UNIX principle of specialization. These tools can either function independently or be integrated into a comprehensive agent application, ensuring compatibility with popular frameworks such as LlamaIndex and LangChain. Among its notable features are SurfKit, which acts as a Kubernetes-style orchestrator for agents; DeviceBay, a system that allows for the integration of pluggable devices like file systems and desktops; ToolFuse, which enables the encapsulation of scripts, third-party applications, and APIs as Tool implementations; AgentD, a daemon that grants bots access to a Linux desktop environment; and AgentDesk, which supports the operation of VMs powered by AgentD. Additionally, Taskara assists in managing tasks, while ThreadMem is designed to create persistent threads that can support multiple roles. MLLM streamlines the interaction with various LLMs and multimodal LLMs. Furthermore, AgentSea features experimental agents such as SurfPizza and SurfSlicer, which utilize multimodal strategies to interact with graphical user interfaces effectively. This platform not only enhances the development experience but also broadens the horizons of what AI agents can achieve in various applications.

Agent Squad is a versatile and robust open-source framework created by AWS to facilitate the management of various AI agents and navigate intricate dialogues. This framework supports multi-agent orchestration, enabling efficient collaboration and utilization of several AI agents within a unified system. It is designed with dual language compatibility, being fully operational in both Python and TypeScript. Through intelligent intent classification, it adeptly directs inquiries to the most appropriate agent by considering both context and content. Additionally, Agent Squad accommodates both streaming and non-streaming outputs from various agents, providing adaptable responses. It effectively preserves and leverages conversation context across multiple agents, ensuring interactions remain coherent. The architecture is highly extensible, permitting straightforward integration of new agents or modifications to existing ones to meet particular requirements. Moreover, Agent Squad's deployment flexibility allows it to operate seamlessly on platforms ranging from AWS Lambda to local environments or any cloud service, making it a highly adaptable solution for various applications. Its design not only enhances collaborative efforts among agents but also optimizes user experience through efficient dialogue management.

Strands Agents SDK is an open-source development framework that allows developers to build and manage AI agents with precision and control. It supports both Python and TypeScript, making it accessible to a wide range of developers and use cases. Instead of relying on rigid workflows or orchestration layers, the SDK lets developers define tools as functions and rely on the model’s reasoning capabilities to drive execution. The platform works across any AI model or cloud environment, offering flexibility for deployment and scaling. One of its standout features is the use of steering hooks, which act as middleware to guide, validate, and correct agent actions in real time. It also includes support for multi-agent systems, enabling complex workflows through agent collaboration. Built-in memory management ensures context is maintained across long interactions without manual intervention. Developers can monitor performance through observability tools that provide detailed traces and metrics. The SDK also includes an evaluation framework for testing agent accuracy and behavior before deployment. Overall, Strands Agents SDK empowers developers to create reliable, scalable, and intelligent AI agents with minimal complexity.

TEN (Transformative Extensions Network) is an open-source framework that enables developers to create real-time multimodal AI agents capable of interacting through voice, video, text, images, and data streams with extremely low latency. The framework encompasses a comprehensive ecosystem, including TEN Turn Detection, TEN Agent, and TMAN Designer, which collectively allow developers to quickly construct agents that exhibit human-like responsiveness and can perceive, articulate, and engage with users. It supports various programming languages such as Python, C++, and Go, providing versatile deployment options across both edge and cloud infrastructures. By leveraging features like graph-based workflow design, a user-friendly drag-and-drop interface via TMAN Designer, and reusable components such as real-time avatars, retrieval-augmented generation (RAG), and image synthesis, TEN facilitates the development of highly adaptable and scalable agents with minimal coding effort. This innovative framework opens up new possibilities for creating advanced AI interactions across diverse applications and industries.

AgentKit offers an all-in-one collection of tools aimed at simplifying the creation, deployment, and enhancement of AI agents. Central to its offerings is Agent Builder, a visual platform that allows developers to easily create multi-agent workflows using drag-and-drop nodes, implement guardrails, preview executions, and manage different workflow versions. The Connector Registry plays a key role in unifying the oversight of data and tool integrations across various workspaces, ensuring effective governance and access management. Additionally, ChatKit facilitates the seamless integration of interactive chat interfaces, which can be tailored to fit specific branding and user experience requirements, into both web and app settings. To ensure high performance and dependability, AgentKit upgrades its evaluation framework with comprehensive datasets, trace grading, automated optimization of prompts, and compatibility with third-party models. Moreover, it offers reinforcement fine-tuning capabilities, further enhancing the potential of agents and their functionalities. This comprehensive suite makes it easier for developers to create sophisticated AI solutions efficiently.

The Claude Agent SDK serves as a comprehensive toolkit for developers aiming to create autonomous AI agents that utilize Claude's capabilities, facilitating their ability to engage in practical tasks that extend beyond mere text generation by directly interfacing with various files, systems, and tools. This SDK incorporates the same core infrastructure utilized by Claude Code, featuring an agent loop, context management, and built-in tool execution, and it is accessible for developers working in both Python and TypeScript. By leveraging this toolkit, developers can create agents that are capable of reading and writing files, executing shell commands, conducting web searches, modifying code, and automating intricate workflows without the need to build these functionalities from the ground up. Additionally, the SDK ensures that agents maintain a persistent context and state throughout their interactions, which allows them to function continuously, reason through complex multi-step problems, take appropriate actions, verify their results, and refine their approach until tasks are successfully completed. This makes the SDK an invaluable resource for those seeking to streamline and enhance the capabilities of AI agents in diverse applications.

The Microsoft Agent Framework is an open-source software development kit and runtime that assists developers in creating, orchestrating, and deploying AI agents alongside multi-agent workflows, utilizing programming languages like .NET and Python. By merging the straightforward agent abstractions found in AutoGen with the sophisticated capabilities of Semantic Kernel, it offers features such as session-based state management, type safety, middleware, telemetry, and extensive model and embedding support, thus providing a cohesive platform suitable for both experimentation and production settings. Additionally, it features graph-based workflows that empower developers with precise control over the interactions among multiple agents, enabling them to execute tasks and coordinate intricate processes efficiently, which facilitates structured orchestration in various scenarios, including sequential, concurrent, or branching workflows. Furthermore, the framework accommodates long-running operations and human-in-the-loop workflows by implementing robust state management, enabling agents to retain context, tackle complex multi-step problems, and function continuously over extended periods. This combination of features not only streamlines development but also enhances the overall performance and reliability of AI-driven applications.

Smolagents is a framework designed for AI agents that streamlines the development and implementation of intelligent agents with minimal coding effort. It allows for the use of code-first agents that run Python code snippets to accomplish tasks more efficiently than conventional JSON-based methods. By integrating with popular large language models, including those from Hugging Face and OpenAI, developers can create agents capable of managing workflows, invoking functions, and interacting with external systems seamlessly. The framework prioritizes user-friendliness, enabling users to define and execute agents in just a few lines of code. It also offers secure execution environments, such as sandboxed spaces, ensuring safe code execution. Moreover, Smolagents fosters collaboration by providing deep integration with the Hugging Face Hub, facilitating the sharing and importing of various tools. With support for a wide range of applications, from basic tasks to complex multi-agent workflows, it delivers both flexibility and significant performance enhancements. As a result, developers can harness the power of AI more effectively than ever before.

TensorFlow Agents (TF-Agents) is an extensive library tailored for reinforcement learning within the TensorFlow framework. It streamlines the creation, execution, and evaluation of new RL algorithms by offering modular components that are both reliable and amenable to customization. Through TF-Agents, developers can quickly iterate on code while ensuring effective test integration and performance benchmarking. The library features a diverse range of agents, including DQN, PPO, REINFORCE, SAC, and TD3, each equipped with their own networks and policies. Additionally, it provides resources for crafting custom environments, policies, and networks, which aids in the development of intricate RL workflows. TF-Agents is designed to work seamlessly with Python and TensorFlow environments, presenting flexibility for various development and deployment scenarios. Furthermore, it is fully compatible with TensorFlow 2.x and offers extensive tutorials and guides to assist users in initiating agent training on established environments such as CartPole. Overall, TF-Agents serves as a robust framework for researchers and developers looking to explore the field of reinforcement learning.

Upsonic is an open-source framework designed to streamline the development of AI agents tailored for business applications. It empowers developers to create, manage, and deploy agents utilizing integrated Model Context Protocol (MCP) tools, both in cloud and local settings. By incorporating built-in reliability features and a service client architecture, Upsonic significantly reduces engineering efforts by 60-70%. The framework employs a client-server model that effectively isolates agent applications, ensuring the stability and statelessness of existing systems. This architecture not only enhances the reliability of agents but also provides the necessary scalability and a task-oriented approach to address real-world challenges. Furthermore, Upsonic facilitates the characterization of autonomous agents, enabling them to set their own goals and backgrounds while integrating functionalities that allow them to perform tasks in a human-like manner. With direct support for LLM calls, developers can connect to models without needing abstraction layers, which accelerates the completion of agent tasks in a more economical way. Additionally, Upsonic's user-friendly interface and comprehensive documentation make it accessible for developers of all skill levels, fostering innovation in AI agent development.