AIchitect
StacksGraphBuilderSimulateCompareGenomeActivityPulse
235 tools · 33 stacks

AI tools are all over the place. This is the full landscape — 247 tools across 21 categories, mapped and connected. Ready to narrow it down? Build your stack →

Team size

Budget

Use case

Stage

Cluster

Stack Layers
What are you building and how is it defined?
How do you write and ship code?
How does your AI think and act?
Which models and infrastructure power it?
How do you build, observe, and extend it?
Browse all categories →
These tools integrates with
OpenAI API
vs
Langfuse

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 Langfuse when…

  • •You want open-source LLM observability
  • •Self-hosting your tracing stack is important
  • •You need cost tracking across models and users
Field
OpenAI API
Langfuse
Category
LLM Infrastructure
Observability
Type
SaaS
OSS
Free Tier
✗ No
✓ Yes
Plans
API: Per token
Cloud: $59/mo
Stars
—
⭐ 7,000
Health
—
●95 — Active
Trajectory
— not enough data
— not enough data
Synced
—
today

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.

Langfuse

Open-source platform for tracing, evaluations, and prompt management. Self-hostable alternative to LangSmith with broad framework support. Acquired by ClickHouse in January 2026; OSS core continues with deeper ClickHouse-backed analytics.

OpenAI API Website ↗
Langfuse Website ↗GitHub ↗

Shared Connections (12)

CrewAIAutoGenLangChainLlamaIndexMastraAgnoLiteLLMPortKeyHeliconeVercel AI SDKPromptFooDeepEval

Only OpenAI API (26)

PydanticAIsmolagentsLangfuseAnthropic APIMistral APICohere APIGroqTogether AI

Only Langfuse (17)

CursorLangGraphDifyLangSmithRAGASOpenAI APIBraintrustArize Phoenix
See full comparison in Explore →