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    Free demo · DeepSeek V3.1 via community routes

    Unofficial DeepSeek V3.1 demo

    Type in the box below to try DeepSeek without an account. This independent demo runs DeepSeek V3.1 on free community routes (falling back to R1 when a route is busy), so answers and speed can vary. It does not run V4-Flash or V4-Pro. For the current V4-Pro and V4-Flash models, use the official DeepSeek chat (see our login guide).

    Last verified: September 9, 2026Reviewed by deepseek.ai editorial desk
    Not the official DeepSeek chat. This is an independent demo running the open-weight DeepSeek V3.1 model through third-party providers. It is not operated by, affiliated with or endorsed by DeepSeek. Never enter your DeepSeek password here. The official app is at chat.deepseek.com.

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    Independent fan site — not affiliated with DeepSeek.com. This demo answers with DeepSeek V3.1 on free community routes (with R1 as fallback when a route is busy). For V4-Flash and V4-Pro, use the official chat at chat.deepseek.com.