head to head · open source
Ollama vs OpenLLMetry
Ollama has 185,702 GitHub stars, 18,873 forks, 3,957 open issues and last shipped yesterday. OpenLLMetry has 7,516 stars, 1,183 forks, 676 open issues and last shipped yesterday. Ollama leads on adoption by 2,371% (185,702 vs 7,516 stars). Ollama is written in Go under MIT; OpenLLMetry is written in Python under Apache-2.0. Ollama has attracted 10% as many forks as stars, OpenLLMetry 16%. Ollama was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (llm), so they are genuine substitutes rather than adjacent tools.
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
| Ollama | OpenLLMetry | |
|---|---|---|
| GitHub stars | ★ 186K | ★ 7.5K |
| License | MIT | Apache-2.0 |
| Written in | Go | Python |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 19K | ⑂ 1.2K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Ollama if
- You weight community size — 186K stars and counting
- You want the MIT license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick OpenLLMetry if
- You want the OpenLLMetry 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 OpenLLMetry fits your workflow better
About Ollama
Ollama Start building with open models. Download macOS or download manually Windows or download manually Linux Manual install instructions Docker The official Ollama Docker image ollama/ollama is available on Docker Hub. Libraries ollama python ollama js Community Discord 𝕏 (Twitter) Reddit Get started You'll be prompted to run a model or connect Ollama to your existing agents or applications such as Claude Code , OpenClaw , OpenCode , Codex , Copilot , and more. Coding To launch a specific integration: Supported integrations include Claude Code, Codex, Copilot CLI, DeepSeek Harness, Droid, and OpenCode. AI…
read the full Ollama overview →
About OpenLLMetry
Open source observability for your LLM application Get started » Slack Docs Website 🎉 New : Our semantic conventions are now part of OpenTelemetry! Join the discussion and help us shape the future of LLM observability. Looking for the JS/TS version? Check out OpenLLMetry JS. OpenLLMetry is a set of extensions built on top of OpenTelemetry that gives you complete observability over your LLM application. Because it uses OpenTelemetry under the hood, it can be connected to your existing observability solutions Datadog, Honeycomb, and others. It's built and maintained by Traceloop under the Apache 2.0 license. The…
read the full OpenLLMetry overview →
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Frequently asked questions
Is Ollama or OpenLLMetry more popular?
Ollama has 185,702 GitHub stars and OpenLLMetry has 7,516. Ollama has the larger community by that measure.
Are Ollama and OpenLLMetry free?
Both are open source. Ollama is licensed under MIT and OpenLLMetry under Apache-2.0. Neither carries a licence fee.
What is the difference between Ollama and OpenLLMetry?
Ollama is written in Go and OpenLLMetry 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, Ollama or OpenLLMetry?
Choose Ollama if you want the larger community (185,702 stars) or its MIT licence terms. Choose OpenLLMetry if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.