DeepSeek V4 Pro Official Version Launches in Late-Night "Surprise": Nears Fable 5 in Multiple Tests, Collides with Grok 4.6

DeepSeek's official API documentation was quietly updated, with the model version switched from the V4-Pro preview to DeepSeek-V4-Pro-0813, indicating support for a 1M context window and up to 384K output tokens. API pricing has not yet been raised, but no changelog for the new model was released. A leaked benchmark comparison table shows the new model approaching Anthropic's Claude Fable 5 in multiple agent tests, significantly outperforming the V4 Pro preview.