Jan vs 
Nexa SDK
Jan vs Nexa SDK compared for 2026 — features, license, ease of use, performance and which one to choose. Open-source, offline ChatGPT-style desktop app vs Run any model on any device — CPU, GPU, NPU.
Updated regularly · curated by OpenSourceAI.tech
Jan vs Nexa SDK at a glance
| Spec | Jan | Nexa SDK |
|---|---|---|
| Category | Run LLMs locally | Run LLMs locally |
| Type | Desktop app (open source) | Local runtime (SDK) |
| License | AGPL-3.0 | Apache-2.0 |
| Runs locally | Yes | Yes |
| Primary language | TypeScript | Python |
| Ease of use | Beginner | Intermediate |
| Best for | users who want an open-source LM Studio alternative | developers targeting many device types from one codebase |
| GitHub stars | 43.6k | — |
How Jan and Nexa SDK score
| Criterion | Jan | Nexa SDK |
|---|---|---|
| Popularity | 4.0 | n/a |
| Maintenance | 5.0 | n/a |
| Ease of use | 5.0 | 3.5 |
| Privacy | 5.0 | 5.0 |
| License freedom | 3.5 | 5.0 |
Scores are computed automatically from public signals — GitHub stars (popularity), recent commit activity (maintenance), license type (freedom), local-first design (privacy) and onboarding complexity (ease of use). Indicative, not a verdict.
What each one is
Jan
Jan is a fully open-source desktop assistant that wraps local models in a clean ChatGPT-style UI, with a built-in model hub and an optional local API server.
- Fully open source with a clean desktop UI
- Local API server and optional cloud model hybrid use
- Privacy-first, works entirely offline
Nexa SDK
Nexa SDK runs text, vision, audio and image models locally across CPU, GPU and NPU backends, with a single unified API and OpenAI-compatible server.
- Runs on NPUs, not just CPU and GPU
- One API for text, vision and audio models
- OpenAI-compatible local server
Key differences
Jan is desktop app (open source), while Nexa SDK is local runtime (SDK). Their licenses differ (AGPL-3.0 vs Apache-2.0), which matters if you ship a commercial product. Jan leans more beginner-friendly, whereas Nexa SDK is more suited to intermediate users. In short, Jan fits users who want an open-source LM Studio alternative, and Nexa SDK fits developers targeting many device types from one codebase.
Which should you choose?
Choose Jan for users who want an open-source LM Studio alternative. Choose Nexa SDK for developers targeting many device types from one codebase.
There is rarely one winner — many setups use both. The right pick depends on your hardware, your team's skills, and whether you value simplicity or control.
Frequently asked questions
Is Jan or Nexa SDK easier to use?
Jan is generally the easier of the two to get started with, while Nexa SDK rewards more setup with more control.
Are Jan and Nexa SDK free?
Jan is free and open source (AGPL-3.0), and Nexa SDK is free and open source (Apache-2.0). Neither charges for the core software.
Can I run Jan and Nexa SDK locally?
Jan: yes · Nexa SDK: yes. Both can be used without sending your data to a third-party cloud where their setup allows.
Jan vs Nexa SDK — which should I pick in 2026?
Choose Jan for users who want an open-source LM Studio alternative. Choose Nexa SDK for developers targeting many device types from one codebase.
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