head to head · open source
claude-mem vs opik
claude-mem has 94,125 GitHub stars, 8,305 forks, 186 open issues and last shipped yesterday. opik has 22,098 stars, 1,801 forks, 258 open issues and last shipped yesterday. claude-mem leads on adoption by 326% (94,125 vs 22,098 stars). claude-mem is written in TypeScript under Apache-2.0; opik is written in Python under Apache-2.0. claude-mem has attracted 9% as many forks as stars, opik 8%. opik was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| claude-mem | opik | |
|---|---|---|
| GitHub stars | ★ 94K | ★ 22K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | TypeScript | Python |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 8.3K | ⑂ 1.8K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick claude-mem if
- You weight community size — 94K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick opik if
- You want the opik feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and opik fits your workflow better
About claude-mem
claude mem is an Apache 2.0 TypeScript memory layer for AI coding agents that captures what an agent did during a session, compresses it with AI, and injects the relevant parts back into future sessions, built for developers running Claude Code, OpenClaw, Codex, Gemini, Hermes, Copilot, OpenCode and similar tools.
read the full claude-mem overview →
About opik
Opik is open source LLM observability, evaluation, and AI agent tracing platform for teams building LLM apps, RAG systems, and agentic workflows, built by Comet, Apache 2.0 licensed, free to self host full platform.
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Frequently asked questions
Is claude-mem or opik more popular?
claude-mem has 94,125 GitHub stars and opik has 22,098. claude-mem has the larger community by that measure.
Are claude-mem and opik free?
Both are open source. claude-mem is licensed under Apache-2.0 and opik under Apache-2.0. Neither carries a licence fee.
What is the difference between claude-mem and opik?
claude-mem is written in TypeScript and opik in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, claude-mem or opik?
Choose claude-mem if you want the larger community (94,125 stars) or its Apache-2.0 licence terms. Choose opik if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.