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123 tools · 10 stacks
GitHub

AI tools are all over the place. This is the full landscape — 123 tools across 12 categories, mapped and connected. Ready to narrow it down? Build your stack →

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?
React Flow mini map
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These tools competes with
OpenAI API
vs
Anthropic API

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 Anthropic API when…

  • •You need long context windows (200k tokens)
  • •Safety, reliability, and reasoning quality matter most
  • •You're building agents that require deep code understanding
Field
OpenAI API
Anthropic API
Category
LLM Infrastructure
LLM Infrastructure
Type
SaaS
SaaS
Free Tier
✗ No
✗ No
Plans
API: Per token
API: Per token
Stars
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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.

Anthropic API

API access to Claude model family including Claude 3.5 Sonnet, Haiku, and Opus. Excels at coding, analysis, long-context tasks, and safety-critical applications.

OpenAI API Website ↗
Anthropic API Website ↗

Shared Connections (14)

CrewAIAutoGenLangChainLlamaIndexMastraPydanticAIsmolagentsAgnoLiteLLMPortKeyHeliconeMistral API

Only OpenAI API (7)

LangfuseAnthropic APICohere APIGroqTogether AIPromptFooDeepEval

Only Anthropic API (1)

OpenAI API
See full comparison in Explore →