Chat with DeepSeek V4 Pro.

DeepSeek's biggest model: the full-strength V4, for when Flash isn't enough.

Start chatting with DeepSeek V4 Pro now — free, no account

At a glance

  • Maker: DeepSeek
  • Active parameters: 1.7T
  • Context window: 1M
  • Size: Very large
  • Memory: Handles very long documents
  • Good at: Hard problems at full scale
  • Supports: tools, zero data retention

Announced in DeepSeek-V4-Pro GA Release.

Model availability changes as upstream capacity comes and goes — the picker on the chat page shows what is ready right now.

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