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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 →

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What are you building and how is it defined?
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These tools competes with
OpenAI API
vs
xAI Grok 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 xAI Grok API when…

  • •comparing frontier models beyond OpenAI and Anthropic
  • •want OpenAI-compatible API with Grok's reasoning capabilities
  • •need a model with real-time knowledge cutoff
Field
OpenAI API
xAI Grok API
Category
LLM Infrastructure
LLM Infrastructure
Type
SaaS
SaaS
Free Tier
✗ No
✓ Yes
Plans
API: Per token
Free: Limited usagePay-as-you-go: Per token
Stars
—
—
Health
—
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Trajectory
— not enough data
— not enough data

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.

xAI Grok API

xAI's Grok API provides access to the Grok family of frontier language models, featuring competitive reasoning capabilities and an OpenAI-compatible API. Grok-2 and Grok Vision models are available with real-time knowledge and strong coding performance.

OpenAI API Website ↗
xAI Grok API Website ↗

Only OpenAI API (38)

CrewAIAutoGenLangChainLlamaIndexMastraPydanticAIsmolagentsAgno

Only xAI Grok API (1)

OpenAI API
See full comparison in Explore →