🪦 Dead

DeepSeek deepseek-chat & deepseek-reasoner

Model deprecation · Renamed to Death · shut down July 24, 2026

Born: January 20, 2025
Died: July 24, 2026
Lifespan: 1y 6m
Cause of death: Renamed to Death
Killed by: DeepSeek
Type: Model

The two API names the entire January 2025 DeepSeek boom was written against. DeepSeek killed them at 15:59 UTC on July 24, telling developers to call deepseek-v4-flash and toggle thinking mode in the request instead of switching model IDs. The migration notes promised the retired names would 'return 404.' They never did — weeks past the hard cutoff, third-party clients still had both names working as silent aliases, priced identically.

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Questions about DeepSeek deepseek-chat & deepseek-reasoner

Is DeepSeek deepseek-chat & deepseek-reasoner dead?

Yes. DeepSeek deepseek-chat & deepseek-reasoner was shut down on July 24, 2026, 1y 6m after its launch on January 20, 2025. The cause of death was renamed to death; it was killed by DeepSeek. Classification: model deprecation. Details and the source are above.