Best OpenAI Agents SDK Alternatives (2026): 10+ options compared

Onyx

Onyx, formerly Danswer, is an open-source AI assistant and enterprise search tool that lets staff search and chat across 50+ connected workplace apps with permissions respected.

• Better at: Higher Security score (8/10 vs 6/10)
• Better at: Higher Integration score (8/10 vs 7/10)
• Gives up: Higher Analytics score (7/10 vs 5/10)

OpenAI's top workplace tier of ChatGPT, adding agentic work, coding, company knowledge search, and enterprise security and governance controls for large organizations.

• Better at: Higher Security score (9/10 vs 6/10)
• Better at: Higher Support score (7/10 vs 5/10)
• Gives up: Has a free plan (ChatGPT Enterprise does not)

ChatGPT

OpenAI's general-purpose AI assistant for writing, research, coding, image creation and agent tasks, sold in individual, team and enterprise plans.

• Better at: Higher Ease of Use score (9/10 vs 7/10)
• Better at: Higher Scalability score (8/10 vs 7/10)
• Gives up: Lower estimated cost for 10 users: Free vs $250/mo

Haystack

Open-source Python framework from deepset for building production LLM applications, including RAG pipelines, agents and semantic search, with optional paid enterprise support.

• Better at: Higher Integration score (8/10 vs 7/10)
• Better at: Higher Customization score (9/10 vs 8/10)
• Gives up: Higher Analytics score (7/10 vs 5/10)

Google Gemini

Google's family of generative AI models and assistants, sold to businesses through Gemini Enterprise, Workspace plans and a pay-per-token developer API.

• Better at: Higher Scalability score (9/10 vs 7/10)
• Better at: Higher Security score (8/10 vs 6/10)
• Gives up: Lower estimated cost for 10 users: Free vs $210/mo

Qwen

Alibaba's family of large language and multimodal models. It is offered as a free chat app, a pay-as-you-go API through Alibaba Cloud Model Studio, and open-weight models for self-hosting.

• Better at: Higher Customization score (9/10 vs 8/10)
• Better at: Higher Scalability score (8/10 vs 7/10)
• Gives up: Higher Analytics score (7/10 vs 4/10)

Amazon Bedrock is a fully managed AWS service that gives developers API access to foundation models from many providers, plus tools for agents, RAG, guardrails and fine-tuning.

• Better at: Higher Security score (9/10 vs 6/10)
• Better at: Higher Scalability score (9/10 vs 7/10)
• Gives up: Has a free plan (Amazon Bedrock does not)

CrewAI

CrewAI is an open-source Python framework and enterprise platform (AMP) for building, deploying, and governing multi-agent AI workflows. It is used by developers and enterprise platform teams.

• Better at: Higher Integration score (8/10 vs 7/10)
• Better at: Higher Customization score (9/10 vs 8/10)
• Gives up: Higher Cost score (9/10 vs 7/10)

ChatGPT Business

ChatGPT Business is OpenAI's self-serve shared ChatGPT workspace for teams of 2 to 200. It bundles ChatGPT Work, Codex, connectors and admin controls, with per-seat pricing.

• Better at: Higher Ease of Use score (9/10 vs 7/10)
• Better at: Higher Integration score (8/10 vs 7/10)
• Gives up: Has a free plan (ChatGPT Business does not)

Visual Studio Code

Microsoft's free code editor with built-in GitHub Copilot chat, inline suggestions and multi-agent coding sessions, aimed at developers and engineering teams.

• Better at: Higher Integration score (9/10 vs 7/10)
• Better at: Higher Customization score (9/10 vs 8/10)
• Gives up: Higher Analytics score (7/10 vs 4/10)

LangChain

LangChain offers open-source frameworks (LangChain, LangGraph, Deep Agents) plus the paid LangSmith platform. Developers use them to build, evaluate, deploy and monitor LLM agents.

• Better at: Higher Integration score (10/10 vs 7/10)
• Better at: Higher Analytics score (9/10 vs 7/10)
• Gives up: Lower estimated cost for 10 users: Free vs $390/mo

Pydantic AI

Pydantic AI is an open-source Python framework from the Pydantic team for building type-safe AI agents that work with many LLM providers.

• Better at: Higher Customization score (9/10 vs 8/10)
• Better at: Higher Scalability score (8/10 vs 7/10)
• Gives up: Lower estimated cost for 10 users: Free vs $49/mo

Fin

Fin is Intercom's AI customer service agent. It resolves support conversations across chat, email, voice and social, either inside Intercom or on top of an existing helpdesk.

• Better at: Higher Security score (9/10 vs 6/10)
• Better at: Higher Scalability score (9/10 vs 7/10)
• Gives up: Has a free plan (Fin does not)

Agent Development Kit (ADK)

Google's open-source, code-first framework for developers to build, evaluate, and deploy single- and multi-agent AI systems in Python, TypeScript, Go, Java, and Kotlin.

• Better at: Higher Integration score (8/10 vs 7/10)
• Better at: Higher Customization score (9/10 vs 8/10)
• Gives up: Higher Ease of Use score (7/10 vs 5/10)

Dify

Open-source platform for building LLM apps, agents, RAG knowledge pipelines and visual AI workflows, available as cloud SaaS or self-hosted.

• Better at: Higher Security score (8/10 vs 6/10)
• Better at: Higher Customization score (9/10 vs 8/10)
• Gives up: Lower estimated cost for 10 users: Free vs $159/mo