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Models / Anthropic

Claude Mythos 5

Preview

Limited availability (not GA) via Project Glasswing to approved customers, beginning June 9, 2026. Successor to Claude Mythos Preview. Adaptive thinking always on; no extended thinking. Pricing identical to Fable 5: $10 in / $50 out; 5m cache $12.50, 1h cache $20, cache hits $1/MTok; Batch $5/$25. 1M context at standard pricing. Status set to 'preview' to reflect limited/invite-only availability. Knowledge cutoff not published (null).

Provider
Anthropic
Status
Preview
Input price
$10 / 1M tokens
Output price
$50 / 1M tokens
Cached input
$1 / 1M tokens
Blended price
$20 / 1M tokens
Context window
1,000,000 tokens (1M)
Max output
128,000 tokens
Modality
text, image, vision
Knowledge cutoff
—
Released
9 Jun 2026
API string
claude-mythos-5

Source: Anthropic official documentation ↗

See also

Compare Claude Mythos 5 with…

Claude Mythos 5 vs Claude Opus 4.8→

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Claude Mythos 5 vs Claude Opus 4.7→

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Claude Mythos 5 vs Claude Opus 4.6→

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Claude Mythos 5 vs Claude Opus 4.5→

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