Claude Mythos Preview

Name: Claude Mythos Preview
Author: Anthropic

Preview text

Preview release

This page is live so the release is discoverable quickly, but it is not treated as a fully evaluated ranked model yet. Pricing, context, availability, and source notes may already be present while benchmark and quality coverage are still being collected.

Input Price

Free

per 1M tokens

Output Price

Free

per 1M tokens

Context Window

tokens

Max Output

tokens

Quality Score

awaiting evaluation

Value Score

awaiting evaluation

Details

Provider: Anthropic
Released: 7 Apr 2026
Speed: N/A
Open Source: No
API Available: No

Notes

Limited-access Anthropic frontier preview launched with Project Glasswing for defensive cybersecurity work.

Regional Availability

Open availability board

Web + App Provider baseline

Claude supported locations

Claude access and paid plan eligibility are limited to Anthropic-supported locations.

Anthropic publishes a supported-location list for Claude access that includes the UK, US, Canada, much of Europe, and a broad set of additional markets.

Known available

United Kingdom United States Canada France Germany Japan

Anthropic's help center treats supported locations as the controlling source for Claude access and plan eligibility.

Last verified 09 Apr 2026, 20:47 UTC Claude Help Center

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