Overview
DeepSeek is the consumer assistant from the Hangzhou-based AI lab of the same name, which also publishes open-weight models such as the V4 series. The chat is available on the web and in free iOS and Android apps, with a DeepThink mode for step-by-step reasoning and a Search mode for answers that draw on the web. Developers can use the same models through a separate pay-as-you-go API.
Key features
- Free chat on web and mobile, with history synced across devices
- DeepThink mode for reasoning-heavy questions
- Search mode for web-informed answers
- File uploads for questions about documents
- Developer API, which supports web search and fetch
Who it’s for
Anyone who wants a capable free assistant, and developers looking for low-cost model access through an API.
Pricing model
The chat app is free to use; the developer API is billed separately by usage. Prices and limits change often, so always confirm on the official website.
Things to consider
- Data is processed by a company based in China; several governments restrict its use on official devices.
- Answers on politically sensitive topics may be filtered.
- Download apps only from official channels; look-alike apps exist.
This is a factual directory listing, not a hands-on review. See how we review AI tools.