Claude Mythos 5

🔬 Preview

Restricted-access version of the Claude 5 Mythos-class model with some safeguards lifted, available to vetted Project Glasswing partners for defensive cybersecurity

Provider list prices

Context Window

Input Price

$10.00/1M

Output Price

$50.00/1M

Released

Jun 9, 2026

Capabilities

textvisionextended-thinkingtool-usecodesecurity

Crazyrouter API catalogue

Not confirmed in the current default-group API catalogue.

Catalogue checked: 2026-10-10T14:22:39+00:00. USD per 1M tokens, default group. The first context tier is shown; long contexts may cost more. This is a gateway catalogue snapshot, not a provider release announcement.

Get API Access →Current API models

Version History

Sep 1, 2026Update

Claude Mythos 5.1 released as the trusted-access sibling of Fable 5.1 for vetted cyberdefense and life-science organizations

Jun 9, 2026New Release

Claude Mythos 5 released as a trusted-access preview to a small number of Project Glasswing partners; identical to Fable 5 apart from safeguards

Jun 9, 2026Pricing Change

Trusted-access pricing matches Fable 5 at $10.00 per 1M input tokens and $50.00 per 1M output tokens