OpenAI AgentKit vs Pydantic AI
as AI assistants see them, week of 2026-09-14
OpenAI AgentKit edges out Pydantic AI overall, scoring 21 versus 15, and shows up more often too — 23 of 71 answers compared to 19 of 71. Head-to-head, AgentKit is named more often in 5 questions, Pydantic AI in 3, with 12 ties. Both are unanimous picks for "Which AI agent framework should a developer choose?" (3 of 3 each), and Pydantic AI also sweeps "best open-source AI agent frameworks" (3 of 3). By assistant, Claude rates Pydantic AI highest at 41, while AgentKit peaks with Claude too, at 36. Both score 0 with Gemini and go unnamed for voice agents, non-technical founders, and production monitoring.
Head to head
| metric | OpenAI AgentKit | Pydantic AI |
|---|---|---|
| score | 21 | 15 |
| questions won | 13 | 15 |
By assistant
OpenAI AgentKit
| assistant | score | named in, this week | usual spot, this week |
|---|---|---|---|
| ChatGPT | 26 | 35% of answers | #3.3 |
| Claude | 36 | 60% of answers | #5.5 |
| Gemini | 0 | 0% of answers | |
| Perplexity | 15 | 21% of answers | #3.8 |
Pydantic AI
| assistant | score | named in, this week | usual spot, this week |
|---|---|---|---|
| ChatGPT | 6 | 10% of answers | #5.5 |
| Claude | 41 | 75% of answers | #6.6 |
| Gemini | 0 | 0% of answers | |
| Perplexity | 7 | 11% of answers | #5.0 |
Where they differ
Only OpenAI AgentKit gets named for
nothing exclusive
Only Pydantic AI gets named for
- What's the best self-hosted platform for running AI agents privately?
- What's the best platform to build an AI agent that connects to my company's data?
More comparisons
- CrewAI vs OpenAI AgentKit
- n8n vs OpenAI AgentKit
- OpenAI AgentKit vs Zapier Agents
- Dify vs OpenAI AgentKit
- Pydantic AI vs Zapier Agents
- n8n vs Pydantic AI
Not sold on either?
Scores count how often each assistant names a product, weighted by position. How the score works · Full AI agent builders leaderboard