These tools integrates with
HeliconevsOpenAI API
LLM observability, cost tracking, request logging versus GPT-5 era models, embeddings, and Responses API from OpenAI
Compare interactively in Explore →Choose Helicone when…
- •You want one-line LLM observability setup
- •Caching LLM responses to cut costs matters
- •You're an early-stage startup optimizing quickly
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
Helicone
OpenAI API
Category
Observability
LLM Infrastructure
Type
Open Source
Commercial
Free Tier
✓ Yes
✗ No
Pricing Plans
Pro: Usage-based
API: Per token
GitHub Stars
⭐ 2,500
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Health
●95 — Active
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Helicone
Open-source LLM observability platform. One-line integration to log every LLM request, track costs, and debug slow or failing calls.
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 Helicone (5)
LangSmithArize PhoenixOpenAI APITraceloopLogfire
Only OpenAI API (36)
CrewAIAutoGenLlamaIndexLangChainPydanticAIsmolagentsAgnoMastraPortKeyHelicone
Explore the full AI landscape
See how Helicone and OpenAI API fit into the bigger picture — 235 tools, 543 relationships, all mapped.