Claude Mythos Preview

RetiredVerified · Jul 17, 2026

profile normalized against the 85-model field

Context window—

Max output—

Output speed—

Affordability—

Capability breadth· 0 of 110%

Capability switches · 0 of 11

Reasoning mode

Tool / function use

Streaming

JSON mode

Structured outputs

Prompt caching

Fine-tuning

Web search

Code execution

Vision input

Audio input

This model has been retired

Anthropic shut this model down on July 21, 2026. It is no longer available, and the specifications and pricing below are kept for historical reference only.

Specifications

Every value carries a primary source and a verification date.

API

API model ID

claude-mythos-preview

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