DeepSeek-V4 : DeepSeek-V4 Forums

DeepSeek-V4 - 1M context open model for advanced reasoning and agents

DeepSeek-V4 brings a standard 1M token context window to open models, enabling long-context reasoning and agent workflows at scale. It offers strong performance in coding, math, and reasoning, with two variants: V4-Pro for capability and V4-Flash for speed and cost efficiency. APIs are OpenAI-compatible, and weights are open for local deployment.

We wanted to push long-context AI from a niche feature into something developers can reliably use in production. Most models struggle to balance context length, cost, and reasoning quality. With V4, the focus was making 1M context usable without extreme compute tradeoffs. Along the way, optimizing attention and agent performance became core priorities, especially for coding and document-heavy workflows. Curious how others are thinking about long-context use cases—what would you build with 1M tokens?

DeepSeek-V4 - 1M context open model for advanced reasoning and agents

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