DeepSeek
Chinese lab's assistant, open-weight models
The reasoning trace is shown next to the answer rather than hidden, and the weights are published, so the same thing can be self-hosted instead of only called over an API.
Pricing and platforms
- Has a free tier
- "Free access to DeepSeek" in the web chat and app; no consumer subscription is sold.
- Runs on
- Web, iOS, Android, API
- Open weights, can be self-hosted
Facts from the vendor's own pages, checked August 19, 2026. Source
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