List of the Top 20 AI Agent Frameworks for Python in 2026

LangChain is a versatile framework that simplifies the process of building, deploying, and managing LLM-based applications, offering developers a suite of powerful tools for creating reasoning-driven systems. The platform includes LangGraph for creating sophisticated agent-driven workflows and LangSmith for ensuring real-time visibility and optimization of AI agents. With LangChain, developers can integrate their own data and APIs into their applications, making them more dynamic and context-aware. It also provides fault-tolerant scalability for enterprise-level applications, ensuring that systems remain responsive under heavy traffic. LangChain’s modular nature allows it to be used in a variety of scenarios, from prototyping new ideas to scaling production-ready LLM applications, making it a valuable tool for businesses across industries.

LangGraph empowers users to achieve greater accuracy and control by facilitating the development of agents that can adeptly handle complex tasks. It serves as a robust platform for building and scaling applications driven by these intelligent agents. The platform’s versatile structure supports a range of control strategies, such as single-agent, multi-agent, hierarchical, and sequential flows, effectively meeting the demands of complicated real-world scenarios. To ensure dependability, simple integration of moderation and quality loops allows agents to stay aligned with their goals. Moreover, LangGraph provides the tools to create customizable templates for cognitive architecture, enabling straightforward configuration of tools, prompts, and models through LangGraph Platform Assistants. With a built-in stateful design, LangGraph agents collaborate with humans by preparing work for review and waiting for consent before proceeding with actions. Users have the capability to oversee the decision-making processes of the agents, while the "time-travel" function offers the ability to revert and modify prior actions for enhanced accuracy. This adaptability not only ensures effective task execution but also allows agents to respond to evolving needs and constructive feedback, fostering continuous improvement in their performance. As a result, LangGraph stands out as a powerful ally in navigating the complexities of task management and optimization.

Riff is a next-generation AI agent platform designed to automate complex, high-impact business workflows across enterprise environments. It enables organizations to build intelligent agents that can read, write, and act within real systems such as ERP, CRM, and data platforms. These agents handle critical processes like order management, procurement, finance operations, and exception resolution. Riff integrates with major enterprise tools including SAP, Oracle, Salesforce, ServiceNow, Microsoft 365, and cloud data platforms. The platform is designed to deliver production-ready solutions in weeks, not months, accelerating time-to-value. It follows a unique model where business teams define outcomes, IT ensures governance, and domain experts build and scale solutions. Riff generates full-stack AI workflows, including agents, APIs, and tools, using standard technologies for flexibility and control. It supports secure, audit-ready deployments with enterprise-grade compliance such as SOC 2, ISO 27001, and GDPR readiness. The platform includes governance features like access controls, audit logs, and lifecycle management. It allows organizations to continuously improve and scale AI capabilities by enabling internal teams to build future agents independently. Riff helps reduce manual workload, improve accuracy, and accelerate decision-making across operations. Overall, it empowers enterprises to transform core business processes through scalable, secure, and production-ready AI automation.

Semantic Kernel serves as a versatile open-source toolkit that streamlines the development of AI agents and allows for the incorporation of advanced AI models into applications developed in C#, Python, or Java. This middleware not only speeds up the deployment of comprehensive enterprise solutions but also attracts major corporations, including Microsoft and various Fortune 500 companies, thanks to its flexibility, modular design, and enhanced observability features. Developers benefit from built-in security measures like telemetry support, hooks, and filters, enabling them to deliver responsible AI solutions at scale confidently. The toolkit's compatibility with versions 1.0 and above across C#, Python, and Java underscores its reliability and commitment to avoiding breaking changes. Furthermore, existing chat-based APIs can be easily upgraded to support additional modalities, such as voice and video, enhancing its overall adaptability. Semantic Kernel is designed with a forward-looking approach, ensuring it can seamlessly integrate with new AI models as technology progresses, thus preserving its significance in the fast-evolving realm of artificial intelligence. This innovative framework empowers developers to explore new ideas and create without the concern of their tools becoming outdated, fostering an environment of continuous growth and advancement.

PydanticAI is a cutting-edge framework designed in Python, aiming to streamline the development of top-notch applications that harness the power of generative AI technologies. Created by the developers behind Pydantic, this framework easily integrates with major AI models like OpenAI, Anthropic, and Gemini. It employs a type-safe structure that allows for real-time debugging and performance monitoring through the Pydantic Logfire system. By leveraging Pydantic for output validation, PydanticAI ensures that responses from models are both structured and consistent. Furthermore, the framework includes a dependency injection system that supports an iterative approach to development and testing, while also facilitating the streaming of LLM outputs for rapid validation. Ideal for projects centered around AI, PydanticAI encourages a flexible and efficient assembly of agents, all while following best practices in Python development. Ultimately, PydanticAI aspires to deliver a seamless experience akin to FastAPI in the context of generative AI application creation, thus improving the overall workflow for developers significantly. With its robust features and user-friendly design, PydanticAI is set to become an essential tool for those looking to excel in the AI development landscape.

Agno is an innovative framework tailored for the development of agents that possess memory, knowledge, tools, and reasoning abilities. It enables developers to create a wide array of agents, including those that reason, operate multimodally, collaborate in teams, and execute complex workflows. With an appealing user interface, Agno not only facilitates seamless interaction with agents but also includes features for monitoring and assessing their performance. Its model-agnostic nature guarantees a uniform interface across over 23 model providers, effectively averting the challenges associated with vendor lock-in. Agents can be instantiated in approximately 2 microseconds on average, which is around 10,000 times faster than LangGraph, while utilizing merely 3.75KiB of memory—50 times less than LangGraph. The framework emphasizes reasoning, allowing agents to engage in "thinking" and "analysis" through various reasoning models, ReasoningTools, or a customized CoT+Tool-use strategy. In addition, Agno's native multimodality enables agents to process a range of inputs and outputs, including text, images, audio, and video. The architecture of Agno supports three distinct operational modes: route, collaborate, and coordinate, which significantly enhances agent interaction flexibility and effectiveness. Overall, by integrating these advanced features, Agno establishes a powerful platform for crafting intelligent agents capable of adapting to a multitude of tasks and environments, promoting innovation in agent-based applications.

Swarm represents a cutting-edge educational framework developed by OpenAI, focusing on the exploration of lightweight, ergonomic multi-agent systems. Its architecture emphasizes both scalability and customization, making it particularly suitable for scenarios where multiple independent tasks and instructions are challenging to manage through a single prompt. Operating exclusively on the client side, Swarm functions with a stateless design similar to the Chat Completions API it utilizes, facilitating the creation of scalable and user-friendly solutions without requiring extensive training. While they share a similar name for simplicity, Swarm agents operate independently and are not connected to the assistants found in the assistants API. The framework includes a variety of examples that illustrate key concepts such as setup, function execution, handoffs, and context variables, along with more complex applications like a multi-agent setup tailored to handle a wide range of customer service inquiries in the airline sector. This adaptability empowers users to effectively leverage the capabilities of multi-agent interactions across different environments and use cases. Ultimately, Swarm enhances the approach to managing complex tasks by allowing for a more distributed and efficient method of operation in diverse applications.

The OpenAI Agents SDK empowers developers to build agent-based AI applications in an efficient and intuitive way, reducing unnecessary complications. This SDK is an advanced iteration of our previous project, Swarm, aimed at agent experimentation. It includes a streamlined collection of essential components: agents, which are sophisticated language models equipped with specific directives and tools; handoffs, which support the distribution of tasks among agents; and guardrails, which ensure that inputs from agents are accurately validated. By utilizing Python in conjunction with these components, developers can create complex interactions between tools and agents, enabling the creation of effective applications without facing a steep learning curve. Additionally, the SDK features built-in tracing capabilities that allow users to visualize, debug, and evaluate their agent workflows, as well as to fine-tune models to meet their unique requirements. This comprehensive array of functionalities positions the Agents SDK as an indispensable tool for developers looking to effectively tap into the potential of AI. Ultimately, it fosters a more accessible environment for innovation in AI development.

Cua is a computer-use agent platform purpose-built for AI systems that need to operate real software environments end to end. It enables agents to control full operating systems in secure cloud sandboxes, executing tasks through visual understanding and precise UI actions. Cua supports parallel agent execution, multi-turn workflows, and cross-platform environments including macOS, Windows, and Linux. The platform includes tools for generating UI datasets, recording agent trajectories, and running standardized benchmarks. Developers can deploy agents in minutes using a simple CLI or SDK without managing infrastructure. Cua integrates with leading vision-language models and automatically routes requests for optimal performance. It is designed to help teams ship, scale, and continuously improve computer-use agents.

AgentSea is a groundbreaking open-source platform that simplifies the creation, deployment, and sharing of AI agents. It offers a comprehensive array of libraries and tools for building AI applications while following the UNIX principle of specialization. These tools can operate on their own or be integrated into a larger agent application, ensuring they work seamlessly with well-known frameworks like LlamaIndex and LangChain. Some of its standout features include SurfKit, which serves as a Kubernetes-style orchestrator for agents; DeviceBay, a system designed for the integration of pluggable devices such as file systems and desktops; ToolFuse, which allows users to encapsulate scripts, third-party applications, and APIs as Tool implementations; AgentD, a daemon that enables bots to access a Linux desktop environment; and AgentDesk, which supports virtual machines powered by AgentD. In addition, Taskara helps with task management, while ThreadMem is built to create persistent threads that can handle multiple roles effectively. MLLM simplifies interactions with various LLMs and multimodal LLMs. Moreover, AgentSea includes experimental agents like SurfPizza and SurfSlicer, which effectively leverage multimodal strategies to interact with graphical user interfaces. This platform not only enhances the development experience but also expands the potential applications of AI agents across diverse fields, paving the way for innovative solutions and advancements in technology.

Agent Squad is a dynamic and powerful open-source framework developed by AWS that aids in the management of multiple AI agents and the navigation of complex conversations. This innovative framework supports the orchestration of multiple agents, allowing for effective collaboration and the use of various AI entities within a single cohesive system. It is built to function in both Python and TypeScript, demonstrating its dual language capability. By employing intelligent intent classification, it skillfully routes inquiries to the most suitable agent, taking into account the context and content of each query. Furthermore, Agent Squad accommodates a variety of output types, supporting both streaming and non-streaming responses from different agents, thus offering flexible interaction options. It also ensures that conversation context is maintained and utilized across various agents, which helps to keep interactions coherent and relevant. The framework's architecture is designed to be highly extensible, making it easy to integrate new agents or modify existing ones to address specific needs. Additionally, Agent Squad's deployment versatility allows it to function smoothly on a range of platforms, from AWS Lambda to local setups or any cloud-based service, making it a versatile option for numerous applications. This design not only fosters enhanced collaboration among agents but also significantly improves the overall user experience through more effective dialogue management, ultimately leading to more meaningful interactions.

Strands Agents SDK is a powerful open-source framework built to help developers design, control, and deploy AI agents with greater flexibility and reliability. Supporting both Python and TypeScript, it enables developers to build agents using familiar programming paradigms without relying on complex orchestration systems. The SDK allows tools to be defined as simple functions, which the AI model can call dynamically during execution. This approach removes the need for rigid pipelines and gives developers more control over how agents behave. It is compatible with any AI model or cloud provider, making it highly adaptable for different environments and enterprise needs. A key feature of Strands is its steering system, which allows developers to intercept and guide agent actions before and after execution. This improves accuracy, safety, and compliance by ensuring that agents follow defined rules. The SDK also supports multi-agent architectures, enabling collaboration between agents to solve complex tasks. Built-in memory management helps maintain context across extended conversations, reducing the need for manual token handling. Observability tools provide insights into agent performance, including tool usage, model calls, and execution flow. Additionally, the evaluation SDK allows developers to test and refine agent behavior before deploying to production. Overall, Strands Agents SDK delivers a modern, developer-friendly approach to building scalable, intelligent, and controllable AI agents.

The Transformative Extensions Network (TEN) is an open-source platform that empowers developers to build real-time multimodal AI agents that can engage through voice, video, text, images, and data streams with remarkably low latency. This framework features a robust ecosystem that includes TEN Turn Detection, TEN Agent, and TMAN Designer, enabling rapid development of agents that respond in a human-like manner and can perceive, communicate, and interact effectively with users. With support for multiple programming languages such as Python, C++, and Go, it offers flexibility for deployment in both edge and cloud environments. By utilizing tools like graph-based workflow design, a user-friendly drag-and-drop interface from TMAN Designer, and reusable elements like real-time avatars, retrieval-augmented generation (RAG), and image synthesis, TEN streamlines the process of creating adaptable and scalable agents with minimal coding requirements. This pioneering framework not only enhances the development process but also paves the way for innovative AI interactions applicable in various fields and sectors, significantly transforming user experiences. Furthermore, it encourages collaboration among developers to push the boundaries of what's possible in AI technology.

AgentKit provides a comprehensive suite of tools designed to streamline the development, deployment, and refinement of AI agents. At the heart of this platform is Agent Builder, a user-friendly visual interface that enables developers to construct multi-agent workflows effortlessly through a drag-and-drop system, implement necessary guardrails, preview running processes, and oversee various versions of workflows. The Connector Registry is essential for consolidating the management of data and tool integrations across multiple workspaces, thereby facilitating effective governance and access control. Furthermore, ChatKit allows for the smooth incorporation of interactive chat interfaces, which can be customized to align with specific branding and user experience needs, into both web and app environments. To maintain optimal performance and reliability, AgentKit enhances its evaluation framework with extensive datasets, trace grading, automated prompt optimization, and support for third-party models. In addition, it provides reinforcement fine-tuning options that further augment the capabilities of agents and their features. This extensive collection of tools empowers developers to efficiently craft advanced AI solutions, ultimately fostering innovation in the field. Overall, AgentKit stands as a pivotal resource for those looking to advance AI technology.

The Claude Agent SDK is an all-encompassing toolkit designed for developers interested in crafting autonomous AI agents that harness Claude's functionalities, enabling them to perform practical tasks that go beyond simple text generation by interacting directly with various files, systems, and tools. This SDK is built upon the same foundational infrastructure as Claude Code, which includes an agent loop, context management, and integrated tool execution, and it is available for developers using both Python and TypeScript. By utilizing this toolkit, developers can design agents that have the ability to read and write files, execute shell commands, perform web searches, amend code, and automate complex workflows without needing to construct these capabilities from scratch. Furthermore, the SDK guarantees that agents retain a continuous context and state during their interactions, thus allowing them to operate seamlessly, navigate intricate multi-step challenges, take suitable actions, validate their outcomes, and adjust their strategies until their tasks are accomplished. This makes the SDK an essential asset for anyone looking to optimize and elevate the functionality of AI agents across a wide array of applications. The flexibility and power of this toolkit empower developers to innovate and push the boundaries of what autonomous agents can achieve.

The Microsoft Agent Framework serves as an open-source SDK and runtime designed to aid developers in the creation, orchestration, and deployment of AI agents and multi-agent workflows, utilizing programming languages such as .NET and Python. It effectively integrates the user-friendly agent abstractions from AutoGen with the advanced functionalities of Semantic Kernel, providing features like session-based state management, type safety, middleware, telemetry, and comprehensive support for models and embeddings, thereby establishing a unified platform that is ideal for both experimental and production environments. Moreover, its graph-based workflow capabilities grant developers precise oversight over the interactions between multiple agents, allowing for the efficient execution of tasks and coordination of complex processes, which supports organized orchestration across diverse scenarios, whether they are sequential, concurrent, or involve branching workflows. In addition to these advantages, the framework is designed to handle long-running operations and human-in-the-loop workflows through its strong state management capabilities, which allow agents to maintain context, address intricate multi-step challenges, and operate continuously over extended durations. This blend of features not only simplifies the development process but also significantly boosts the performance and dependability of AI-driven applications, making it a valuable tool for developers seeking to innovate in the field of artificial intelligence. Ultimately, the framework's versatility ensures that it can adapt to various use cases, further enhancing its appeal in the ever-evolving landscape of AI technology.

Smolagents is an innovative framework intended for AI agents, streamlining the creation and deployment of intelligent agents while requiring minimal coding. This platform enables the development of code-first agents that execute Python code snippets, offering efficiency that surpasses traditional JSON-based approaches. By seamlessly integrating with well-known large language models from providers like Hugging Face and OpenAI, developers gain the ability to create agents that can efficiently handle workflows, execute functions, and communicate with external systems. The framework emphasizes ease of use, allowing users to define and run agents with just a few lines of code. Additionally, it incorporates secure execution environments, such as sandboxed areas, to ensure safe and reliable code execution. Smolagents also encourages collaboration by offering robust integration with the Hugging Face Hub, simplifying the process of sharing and importing various tools. With its support for a diverse array of applications, ranging from simple tasks to intricate multi-agent workflows, it not only enhances flexibility but also provides significant performance improvements. Consequently, developers can leverage the capabilities of AI more effectively than in previous iterations, paving the way for innovative solutions in their projects. This makes Smolagents a valuable asset in the evolving landscape of artificial intelligence development.

TF-Agents is a comprehensive library specifically designed for reinforcement learning within the TensorFlow ecosystem. It facilitates the development, execution, and assessment of novel RL algorithms by providing reliable and customizable modular components. With TF-Agents, developers can efficiently iterate their code while ensuring proper integration of tests and performance evaluations. The library encompasses a variety of agents, such as DQN, PPO, REINFORCE, SAC, and TD3, each featuring distinct networks and policies tailored for specific tasks. Moreover, it supplies tools for creating custom environments, policies, and networks, which is essential for building complex RL workflows. TF-Agents is optimized for seamless interaction with Python and TensorFlow environments, offering versatility for different development and deployment needs. Additionally, it is fully compatible with TensorFlow 2.x and includes a wealth of tutorials and guides to help users start training agents on well-known environments like CartPole. Ultimately, TF-Agents not only serves as a powerful framework for researchers and developers delving into reinforcement learning but also fosters a supportive community that shares knowledge and resources to enhance learning experiences.

Upsonic is an innovative open-source framework crafted to simplify the creation of AI agents specifically designed for business purposes. It empowers developers to build, oversee, and deploy agents using integrated Model Context Protocol (MCP) tools in both cloud and local environments. With its built-in reliability features and a service client architecture, Upsonic effectively diminishes engineering workload by an impressive 60-70%. The framework operates on a client-server model that isolates agent applications, promoting the stability and statelessness of existing systems. This design not only bolsters the reliability of agents but also ensures scalability and a task-oriented framework to tackle real-world issues. Moreover, Upsonic allows for the characterization of autonomous agents, enabling them to define their own objectives and backgrounds, while incorporating functionalities for executing tasks in a human-like fashion. The framework also supports direct LLM calls, enabling developers to interface with models without necessitating abstraction layers, which expedites the execution of agent tasks in a cost-effective manner. To further enhance accessibility, Upsonic features a user-friendly interface and extensive documentation, making it approachable for developers with varying levels of expertise, ultimately promoting creativity and progress in AI agent development. As a result, Upsonic not only streamlines the development process but also encourages a collaborative environment for innovation in technology.

GraphBit stands out as a powerful AI framework specifically designed for enterprises, aimed at overseeing critical AI infrastructures with an emphasis on security, governance, and dependable performance in production environments. By utilizing a high-performance Rust execution core combined with a Python wrapper, it provides developers with an ideal mix of efficient orchestration and the accessibility of Python, which empowers the creation of reliable multi-agent workflows that minimize CPU and memory consumption. The architecture of GraphBit is carefully crafted to reduce potential risks, featuring multiple layers that include interfaces, configuration, models, tools, actions, memory, orchestration, and observability. This framework integrates effortlessly with existing applications, supports the development of customized AI interfaces, and allows users to interact through user-friendly workflows while ensuring actions are well-regulated. Teams can establish policies, rules, and safeguards from a centralized platform, with GraphBit facilitating compliance without the need for alterations to application code. Moreover, it supports LLMs and multimodal models from various providers, offering teams the flexibility to swap models seamlessly while maintaining workflows and governance. With such a thorough design, GraphBit not only boosts operational efficiency but also encourages innovation, enabling teams to concentrate on crafting cutting-edge AI solutions that can adapt to future challenges. Ultimately, this positions GraphBit as a vital tool for organizations striving to stay at the forefront of AI technology.