🪦 Dead

Claude 3 Sonnet

Model deprecation · Model Deprecation · shut down July 21, 2025

Born: March 4, 2024
Died: July 21, 2025
Lifespan: 1y 4m
Cause of death: Model Deprecation
Killed by: Anthropic
Type: Model

The mid-tier model of Anthropic's Claude 3 family, offering a balance of speed and intelligence. Retired alongside Claude 2 as the Claude 3.5 and 4 series provided better performance at the same cost.

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Questions about Claude 3 Sonnet

Is Claude 3 Sonnet dead?

Yes. Claude 3 Sonnet was shut down on July 21, 2025, 1y 4m after its launch on March 4, 2024. The cause of death was model deprecation; it was killed by Anthropic. Classification: model deprecation. Details and the source are above.

Claude 3 Sonnet

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