Tool comparison
LangChain vs LlamaIndex
Side-by-side comparison sourced from the latest tool data we maintain. Updated whenever a tool ships a release. Both compete in Agentic Workflows, AI.
L
Option B
LlamaIndex
Agent Framework
Data framework for connecting LLM apps to private and external data.
Quick comparison
Pulled directly from each tool's catalog entry.
| Attribute | LangChain | LlamaIndex |
|---|---|---|
| Pricing model | Open source | Open source |
| Free trial | No | No |
| Setup complexity | hard | hard |
| Platforms | Web, Linux, macOS, Windows | Web, Linux, macOS, Windows |
| Integrations | OpenAI API, Anthropic API, Ollama | Vector databases, OpenAI API, Anthropic API |
| Current version | ||
| Original release | Not specified | Not specified |
| Latest release | Not specified | Not specified |
| GitHub activity | Not specified | Not specified |
| Freshness score | Not scored | Not scored |
| Categories | Agentic Workflows, AI | Agentic Workflows, AI |
When LangChain fits best
- Automate multi-step tasks where AI agents can plan, execute, and iterate with minimal supervision.
- Build AI-powered features such as assistants, copilots, and workflow automation.
- Connect LangChain into existing stacks with integrations like OpenAI API, Anthropic API, Ollama.
- Adopt for advanced teams that need deeper customization and higher operational control.
- Choose this when you need open-source flexibility and self-hosting optionality.
When LlamaIndex fits best
- Automate multi-step tasks where AI agents can plan, execute, and iterate with minimal supervision.
- Build AI-powered features such as assistants, copilots, and workflow automation.
- Connect LlamaIndex into existing stacks with integrations like Vector databases, OpenAI API, Anthropic API.
- Adopt for advanced teams that need deeper customization and higher operational control.
- Choose this when you need open-source flexibility and self-hosting optionality.
What they share
- Platforms
- Web, Linux, macOS, Windows
- Integrations
- OpenAI API, Anthropic API
- Tags
- #framework
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Side-by-side comparison of two developer tools on DevTechLife. Some links on this page are affiliate links. See our affiliate disclosure for details.