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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 integrates with
LlamaIndex
vs
OpenAI API

Choose LlamaIndex when…

  • •You're building RAG or knowledge base apps
  • •Structured data querying over documents is your focus
  • •You need powerful index and retrieval primitives

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
Field
LlamaIndex
OpenAI API
Category
Pipelines & RAG
LLM Infrastructure
Type
OSS
SaaS
Free Tier
✓ Yes
✗ No
Plans
—
API: Per token
Stars
⭐ 37,000
—
Health
●100 — Active
—
Trajectory
— not enough data
— not enough data
Synced
today
—

LlamaIndex

Framework specialized in data ingestion, indexing, and retrieval for LLM applications. The go-to for complex RAG pipelines.

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.

LlamaIndex Website ↗GitHub ↗
OpenAI API Website ↗

Shared Connections (6)

LangChainLangfuseLiteLLMAnthropic APIRAGFlowLightRAG

Only LlamaIndex (13)

CursorLangGraphQdrantChromapgvectorWeaviateOllamaRAGAS

Only OpenAI API (32)

CrewAIAutoGenLlamaIndexMastraPydanticAIsmolagentsAgnoPortKey
See full comparison in Explore →