---
title: "langchain vs letta"
type: "comparison"
canonical_url: "https://www.graphcanon.com/compare/langchain-ai-langchain-vs-letta-ai-letta"
tools: ["langchain-ai-langchain", "letta-ai-letta"]
---

# langchain vs letta

Neutral, constraint-first comparison with live GitHub stats.

| | [langchain](/tools/langchain-ai-langchain.md) | [letta](/tools/letta-ai-letta.md) |
| --- | --- | --- |
| Tagline | The agent engineering platform. | Platform for stateful agents with advanced memory and self-improvement capabilities. |
| Stars | 141,215 | 23,699 |
| Forks | 23,473 | 2,511 |
| Open issues | 405 | 48 |
| Language | Python | Python |
| License | MIT | Apache-2.0 |
| Categories | AI Agents | AI Agents |

---

**Machine-readable endpoints**

- JSON: [`/api/graphcanon/graph?tool=langchain-ai-langchain`](/api/graphcanon/graph?tool=langchain-ai-langchain)
- LLM index: [/llms.txt](/llms.txt)
- Full corpus: [/llms-full.txt](/llms-full.txt)

_GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_