Jan vs LangSmith
Jan and LangSmith are both AI Platforms tools in our directory. This side-by-side comparison covers pricing, user ratings, supported platforms, key features and open-source status so you can decide which one fits your needs.
Side-by-side comparison
| Attribute | Jan | LangSmith |
|---|---|---|
| Vendor | Menlo Research | LangChain |
| Rating | ★ 4.6 | ★ 4.4 |
| Pricing | Free | Freemium |
| Platforms | Desktop, Local | Web, API |
| Key features | Local models on macOS, Windows and Linux, Offline chat with no account, OpenAI-compatible local API | Full trace visibility for chains & agents, Dataset + evaluation workflows, Prompt playground with versioning |
| Headquarters | Singapore | San Francisco, USA |
| Founded | 2023 | 2023 |
| Open source | Yes | No |
Key differences
- Jan has a higher user rating (4.6★ vs 4.4★).
- Jan is Free, while LangSmith is Freemium.
- Jan is open source (its code is public), while LangSmith is proprietary.
- Jan runs on Desktop, Local; LangSmith runs on Web, API.
Frequently asked questions
Is Jan or LangSmith better?
By user rating, Jan scores higher (4.6★ vs 4.4★). Both are capable AI Platforms tools, so review the feature comparison for your use case.
Which is cheaper, Jan or LangSmith?
Jan is Free and LangSmith is Freemium. Check each product page for current plan details.
Are Jan and LangSmith open source?
Jan is open source, while LangSmith is proprietary.