OpenAI Agents SDK vs Pydantic AI
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
OpenAI Agents SDK is the stronger AI pick in AI Agents: it has a visibility score of 31.4 versus 1.2 for Pydantic AI, and ranks ahead in 100% of the answers that name both.
Choose OpenAI Agents SDK if…
- You want the brand AI engines rank higher (31.4 vs 1.2)
- You need SOC 2 Type 2 or ISO/IEC 27001:2022 or ISO/IEC 27701:2019 or CSA STAR Level 1 coverage
- Widely adopted platform for enterprise and developer agents
- Streamlined framework for native GPT integration and function calling
Choose Pydantic AI if…
- AI answers describe it more positively (100% vs 45% positive)
- Type-safe, production-grade application code
AI visibility side by side
Latest weekly run · Nov 3
| Metric | OpenAI Agents SDK | Pydantic AI |
|---|---|---|
| Visibility score | 31.4% | 1.2% |
| Change vs last week | New | New |
| Rank in AI Agents | #2 | #54 |
| Share of voice | 5.8% | 0.4% |
| Mentions this run | 38 | 2 |
| Positive in AI answers | 45% | 100% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
OpenAI Agents SDK 0pp · Pydantic AI 0pp over 0 weekly runs.
Engine by engine
OpenAI Agents SDK leads on 3 of 3 engines
Head to head in AI answers
1 engine answers name both brands
| Prompt | Engine | OpenAI Agents SDK | Pydantic AI |
|---|---|---|---|
| Best AI agent platform for startups | AI Mode | #3 | #5 |
Features, pricing & fit
| Dimension | OpenAI Agents SDK | Pydantic AI |
|---|---|---|
| Pricing model | — | Usage-based |
| Entry price | — | Free; paid from $49 / mo |
| Free plan | — | Yes |
| Deployment | Runs inside the customer's own application; the customer controls deployment, storage and approvals. | — |
| Compliance | SOC 2 Type 2, ISO/IEC 27001:2022, ISO/IEC 27701:2019, CSA STAR Level 1 | — |
| Support | — | Enterprise tier includes 24/7 priority access to engineers and custom SLAs |
| Headquarters | 1455 and 1515 Third Street, San Francisco | California, United States |
| Employees | — | 11–50 |
| Funding | $122 billion round closed March 31, 2026 at $852 billion post-money, anchored by Amazon, Nvidia and SoftBank · $180000M raised | Series A · $17M raised |
| Best for | Teams already building on OpenAI models that want a lightweight framework to write their own agent logic. | Teams building type-safe AI agents that they intend to ship to production |
Plans side by side
OpenAI Agents SDK
Pricing not available.
Pros and cons
Themes from the AI answers that mention each brand
OpenAI Agents SDK
- Widely adopted platform for enterprise and developer agents
- Streamlined framework for native GPT integration and function calling
- Good for rapid prototyping
- Access to foundational models and agent workflows via the OpenAI Platform
- A framework rather than a complete enterprise automation suite
- Requires separate payment for OpenAI model API usage
Pydantic AI
- Type-safe, production-grade application code
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 100%·next run
Cite as: SlateIndex, “OpenAI Agents SDK vs Pydantic AI”, https://slateindex.ai/compare/openai-agents-sdk-vs-pydantic-ai, data of Nov 3, 2026. Licence: CC BY 4.0.