These tools integrates with
OpenAI APIvsPromptFoo
GPT-5 era models, embeddings, and Responses API from OpenAI versus CLI/library for prompt testing and red-teaming
Compare interactively in Explore →Choose OpenAI API when…
- •You need the broadest ecosystem and most integrations
- •GPT-4 or o-series reasoning models are required
- •Assistants API, fine-tuning, or batch API are needed
Choose PromptFoo when…
- •You want CLI-first, config-driven LLM evals
- •Running eval suites in CI/CD pipelines is a goal
- •You need red-teaming and safety testing built in
Side-by-side comparison
Field
OpenAI API
PromptFoo
Category
LLM Infrastructure
Prompt & Eval
Type
Commercial
Open Source
Free Tier
✗ No
✓ Yes
Pricing Plans
API: Per token
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GitHub Stars
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⭐ 5,000
Health
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●95 — Active
OpenAI API
API access to GPT-5, GPT-5.5, o3/o4 reasoning models, and the Responses API; plus embeddings, image, audio, and Realtime endpoints. The most widely deployed LLM API in production.
Shared Connections3 tools both integrate with
Only OpenAI API (36)
CrewAIAutoGenLlamaIndexLangChainPydanticAIsmolagentsAgnoMastraLiteLLMPortKey
Only PromptFoo (3)
OpenAI APIVellumAgenta
Explore the full AI landscape
See how OpenAI API and PromptFoo fit into the bigger picture — 235 tools, 543 relationships, all mapped.