head to head · open source
LocalAI vs Spanlens
LocalAI has 49,179 GitHub stars, 4,458 forks, 201 open issues and last shipped today. Spanlens has 13 stars, 0 forks, 1 open issues and last shipped 6 days ago. LocalAI leads on adoption by 378,200% (49,179 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 0%. 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 | ★ 49K | ★ 13 |
| License | MIT | MIT |
| Written in | Go | TypeScript |
| Last push | 2026-09-20 | 2026-09-14 |
| Forks | ⑂ 4.5K | ⑂ 0 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick LocalAI if
- You weight community size — 49K 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
LocalAI is an open source AI runtime that enables running large language models (LLMs), vision, audio, image, and video models locally or on premises. It operates as a modular engine where each model type is backed by a dedicated, lightweight backend—such as llama.cpp, whisper.cpp, or stable diffusion—pulled only when needed. This composable architecture avoids bundling unnecessary dependencies, keeping the core minimal while supporting diverse modalities and hardware configurations.
read the full LocalAI overview →
About Spanlens
Spanlens is an MIT licensed, open source LLM observability and monitoring layer that sits as a drop in proxy in front of OpenAI, Anthropic, and Gemini clients to log every call's cost, tokens, latency, and agent traces, built for developers running LLM applications in production who need more than a provider dashboard's total spend.
read the full Spanlens overview →
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Frequently asked questions
Is LocalAI or Spanlens more popular?
LocalAI has 49,179 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 (49,179 stars) or its MIT licence terms. Choose Spanlens if its feature set, stack or MIT licence fits better. Both are self-hostable.