Claude Mythos 5

CurrentVerified · Jul 26, 2026

profile normalized against the 88-model field

Context window· 1M of 10M10%

Max output· 128K of 384K33%

Output speed—

Affordability· $50.00 / Mtok out72%

Capability breadth· 1 of 119%

Capability switches · 1 of 11

Reasoning mode

Tool / function use

Streaming

JSON mode

Structured outputs

Prompt caching

Fine-tuning

Web search

Code execution

Vision input

Audio input

Specifications

Every value carries a primary source and a verification date.

Context window

Max output

128K

Input $/Mtok

$10 / MTok input USD / MTok

Cached input $/Mtok

$12.50 / MTok (5m cache write) USD/MTok

Output $/Mtok

$50 / MTok output USD / MTok

Input modalities

text, image

Output modalities

text

Reasoning mode

Adaptive thinking: Yes (always on); Extended thinking: No

Vision input

Vision supported

API model ID

claude-mythos-5

Release date

June 9, 2026

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