head to head · open source
LocalAI vs Spanlens
LocalAI has 50,208 GitHub stars, 4,577 forks, 201 open issues and last shipped yesterday. Spanlens has 13 stars, 1 forks, 1 open issues and last shipped 4 days ago. LocalAI leads on adoption by 386,115% (50,208 vs 13 stars). LocalAI is written in Go under MIT; Spanlens is written in TypeScript under MIT. LocalAI has attracted 9% as many forks as stars, Spanlens 8%. LocalAI 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
| LocalAI | Spanlens | |
|---|---|---|
| GitHub stars | ★ 50K | ★ 13 |
| License | MIT | MIT |
| Written in | Go | TypeScript |
| Last push | 2026-11-05 | 2026-11-02 |
| Forks | ⑂ 4.6K | ⑂ 1 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick LocalAI if
- You weight community size — 50K stars and counting
- You want the MIT license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick Spanlens if
- You want the Spanlens feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and Spanlens fits your workflow better
About LocalAI
Deutsch Español français 日本語 한국어 Português Русский 中文 LocalAI is the open source AI engine. Run any model LLMs, vision, voice, image, video on any hardware. No GPU required. A small core, not a bundle. Each backend wraps a best in class engine (llama.cpp, vLLM, whisper.cpp, stable diffusion, MLX...) in its own image, pulled only when a model needs it. You install nothing you don't use. Composable by design : backends are separate and pulled on demand, so you install only what your model needs Open and extensible : load any model, or build your own backend in any language against an open interface Drop in API…
read the full LocalAI overview →
About Spanlens
Spanlens Open source LLM observability you can turn on in one line. Point your OpenAI, Anthropic, or Gemini client at Spanlens and every call is logged with cost, tokens, latency, and full agent traces. No SDK rewrite, no platform migration. Eleven providers supported, plus native Vercel AI SDK, LangChain, and LlamaIndex integrations, and you can query it all from Cursor or Claude Desktop through the bundled MCP server. Self hostable in one Docker command. MIT. Why it exists. I shipped an LLM app on OpenAI and Gemini and hit a wall. The provider dashboards showed total spend and nothing else. I could not tell…
read the full Spanlens overview →
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Frequently asked questions
Is LocalAI or Spanlens more popular?
LocalAI has 50,208 GitHub stars and Spanlens has 13. LocalAI has the larger community by that measure.
Are LocalAI and Spanlens free?
Both are open source. LocalAI is licensed under MIT and Spanlens under MIT. Neither carries a licence fee.
What is the difference between LocalAI and Spanlens?
LocalAI is written in Go and Spanlens in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, LocalAI or Spanlens?
Choose LocalAI if you want the larger community (50,208 stars) or its MIT licence terms. Choose Spanlens if its feature set, stack or MIT licence fits better. Both are self-hostable.