ChainMemory vs LangChain

LangChain is a developer framework for building LLM apps, not a persistent memory service.

Which to pick

What it is: ChainMemory:ChainMemory provides portable, verifiable, persistent memory for AI agents across models via Chrome extension, MCP server, or REST API.; LangChain:LangChain is an open platform for building, testing, deploying, monitoring, and governing LLM agents.
Best for: ChainMemory:Cross-model verifiable AI memory; LangChain:End-to-end agent engineering platform
Who it’s for: ChainMemory:Developers building AI agents that need cross-model context and audit-ready memory.; LangChain:Developers and teams building AI agents and LLM-powered applications.
Pricing: ChainMemory:Freemium; LangChain:Freemium
Plans: ChainMemory:Free $0; LangChain:Developer $0 per seat per month · Plus $39 per seat per month
Open source: ChainMemory:—; LangChain:Yes, 147,359 GitHub stars
Works with: ChainMemory:Chrome extension, MCP server, REST API, Node.js, Python, Go; LangChain:—

Cross-model portability. Save memories in one model (e.g., ChatGPT) and recall them in others like Claude or Gemini.
Cryptographic verification. Each memory gets a hash and project states are anchored with Merkle proofs for immutable integrity.
Project Brain. Aggregates memories into a structured, queryable project state with decisions, milestones and risks.
Multi-agent native support. Multiple agents share a single consolidated state with full attribution.
Chrome extension & MCP server. One-click saving from chat windows or direct integration via MCP for any client.
REST API & SDKs. Full API and Node.js/Python/Go SDKs to save, search, inject context and verify states programmatically.

Build agents fast. Start with proven patterns, customize harness, context, memory and model choice.
Trace-based testing. Debug runs with step-by-step tracing and query complex traces instantly.
Managed deployments. Deploy long-running agents with serverless or dedicated sandboxes and 30+ endpoints.
Production monitoring. Online evals, dashboards and alerts track quality, cost, latency and errors.
Feedback loop engine. Automatically detect issues, diagnose root causes and feed fixes back into evals.
Governance controls. Enforce cost limits, data redaction and human approval via LLM Gateway.

Is ChainMemory or LangChain free?+

ChainMemory has a free plan and paid plans. LangChain has a free plan (Developer); paid plans start at $39/month per user (Plus).

Is ChainMemory or LangChain open source?+

LangChain is open source (langchain-ai/langchain on GitHub, MIT license). DevHunt has no public source repository on record for ChainMemory.

ChainMemory

1 upvote · Launched on DevHunt on Jul 21, 2026

LangChain

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Based on each tool's website and DevHunt data. Details may change; check the official sites.