These tools integrates with
LangfusevsOpenAI API
OSS LLM engineering platform versus GPT-4o, o1, and embeddings from OpenAI
Compare interactively in Explore →Choose Langfuse when…
- •You want open-source LLM observability
- •Self-hosting your tracing stack is important
- •You need cost tracking across models and users
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
Side-by-side comparison
Field
Langfuse
OpenAI API
Category
LLM Infrastructure
LLM Infrastructure
Type
Open Source
Commercial
Free Tier
✓ Yes
✗ No
Pricing Plans
Cloud: $59/mo
API: Per token
GitHub Stars
⭐ 7,000
—
Health
●80 — Active
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Langfuse
Open-source platform for tracing, evaluations, and prompt management. Self-hostable alternative to LangSmith with clean UX.
OpenAI API
API access to GPT-4o, o1, and other OpenAI models including embeddings and image generation. The most widely used LLM API in production.
Shared Connections12 tools both integrate with
Only Langfuse (18)
Claude CodeLangGraphCursorOpenHandsDifyLangSmithRAGASOpenAI APIBraintrustArize Phoenix
Only OpenAI API (18)
PydanticAIsmolagentsLangfuseAnthropic APIMistral APICohere APIGroqTogether AILettaGoogle Gemini API
Explore the full AI landscape
See how Langfuse and OpenAI API fit into the bigger picture — 207 tools, 452 relationships, all mapped.