head to head · open source
Yaak vs optillm
Yaak has 19,437 GitHub stars, 842 forks, 19 open issues and last shipped yesterday. optillm has 4,337 stars, 398 forks, 23 open issues and last shipped 3 days ago. Yaak leads on adoption by 348% (19,437 vs 4,337 stars). Yaak is written in TypeScript under MIT; optillm is written in Python under Apache-2.0. Yaak has attracted 4% as many forks as stars, optillm 9%. Yaak 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
| Yaak | optillm | |
|---|---|---|
| GitHub stars | ★ 19K | ★ 4.3K |
| License | MIT | Apache-2.0 |
| Written in | TypeScript | Python |
| Last push | 2026-11-04 | 2026-11-02 |
| Forks | ⑂ 842 | ⑂ 398 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Yaak if
- You weight community size — 19K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick optillm if
- You want the optillm 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 optillm fits your workflow better
About Yaak
💫 Yaak ➟ Desktop API Client 💫 A fast, privacy first API client for REST, GraphQL, SSE, WebSocket, and gRPC – built with Tauri, Rust, and React. Development is funded by community purchased licenses . You can also become a sponsor to have your logo appear below. 💖 Features Yaak is an offline first API client designed to stay out of your way while giving you everything you need when you need it. Built with Tauri, Rust, and React, it’s fast, lightweight, and private. No telemetry, no VC funding, and no cloud lock in. 🌐 Work with any API Import collections from Postman, Insomnia, OpenAPI, Swagger, or Curl. Send…
About optillm
OptiLLM 🚀 2 10x accuracy improvements on reasoning tasks with zero training 🤗 HuggingFace Space • 📓 Colab Demo • 💬 Discussions OptiLLM is an OpenAI API compatible optimizing inference proxy that implements 20+ state of the art techniques to dramatically improve LLM accuracy and performance on reasoning tasks without requiring any model training or fine tuning. It is possible to beat the frontier models using these techniques across diverse tasks by doing additional compute at inference time. A good example of how to combine such techniques together is the CePO approach from Cerebras. ✨ Key Features 🎯…
read the full optillm overview →
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Frequently asked questions
Is Yaak or optillm more popular?
Yaak has 19,437 GitHub stars and optillm has 4,337. Yaak has the larger community by that measure.
Are Yaak and optillm free?
Both are open source. Yaak is licensed under MIT and optillm under Apache-2.0. Neither carries a licence fee.
What is the difference between Yaak and optillm?
Yaak is written in TypeScript and optillm 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, Yaak or optillm?
Choose Yaak if you want the larger community (19,437 stars) or its MIT licence terms. Choose optillm if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.