#1
OA#1
Lightweight framework for multi-agent workflows from OpenAI.
Agent frameworks & SDKsopen-source
Best framework for your first agent
Short answer: start with OpenAI Agents SDK — Lightweight framework for multi-agent workflows from OpenAI. Strong alternatives: Vercel AI SDK, Pydantic AI, Mastra, CrewAI.
Updated Oct 13, 2026 · How we rank
Editorial v0 order for "Best framework for your first agent". Not benchmarked yet — scores will be published per the methodology once tested.
Ranked, not sold.
The ranking
5 tools
- #2VA
TypeScript toolkit for building AI apps and agents.
Agent frameworks & SDKsopen-source - #3PA
Python agent framework from the Pydantic team.
Agent frameworks & SDKsopen-source - #4M
TypeScript framework for AI agents and workflows.
Agent frameworks & SDKsopen-source - #5C
Python framework for orchestrating role-playing multi-agent crews.
Agent frameworks & SDKsopen-source
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Comparison table
| Rank | Tool | Pricing model | Integrations | Self-hostable | Last verified |
|---|---|---|---|---|---|
| 1 | OpenAI Agents SDK | open-source | API, MCP | Yes | Oct 14, 2026 |
| 2 | Vercel AI SDK | open-source | API, MCP | Yes | Oct 14, 2026 |
| 3 | Pydantic AI | open-source | API, MCP | Yes | Oct 14, 2026 |
| 4 | Mastra | open-source | API, MCP | Yes | Oct 14, 2026 |
| 5 | CrewAI | open-source | API | Yes | Oct 14, 2026 |
Head-to-head comparisons
- OpenAI Agents SDK vs Vercel AI SDK
- OpenAI Agents SDK vs Pydantic AI
- OpenAI Agents SDK vs Mastra
- OpenAI Agents SDK vs CrewAI
- Vercel AI SDK vs Pydantic AI
- Vercel AI SDK vs Mastra
- Vercel AI SDK vs CrewAI
- Pydantic AI vs Mastra
- Pydantic AI vs CrewAI
- Mastra vs CrewAI
FAQ
How is this ranking made?
By the published methodology: an independent editorial v0 ordering, not yet benchmarked. Rankings never change because a program pays.