AnthropicReleased on Apr 7, 2026

Claude Mythos Preview: Benchmarks, Pricing & Context Window

Claude Mythos Preview is a language model from Anthropic, released in April 2026, with multimodal input.

Claude Mythos Preview is an unreleased general-purpose frontier model from Anthropic, a new tier above Opus (internal codename 'Capybara'). It identified thousands of zero-day vulnerabilities across every major operating system and web

Input
TextImage
Output
Text

Claude Mythos Preview pricing

Providers

Claude Mythos Preview starts at $25.00 per million input tokens and $125 per million output tokens via Anthropic.

ProviderInput $/MOutput $/MMax InputMax OutputLatency sThroughputQuantInputOutput
Anthropic logoAnthropic
$25.00$125

Claude Mythos Preview API

API access coming soon

Claude Mythos Preview will be available through our gateway shortly.

Claude Mythos Preview examples

Recent arena outputs from Claude Mythos Preview, picked from the highest-ranked matchups.

Claude Mythos Preview license

Claude Mythos Preview is released under the Proprietary license, which restricts commercial use.

License
Proprietary
Non-commercial

Proprietary license - usage restrictions apply

FAQ

Common questions about Claude Mythos Preview.

Who created Claude Mythos Preview?

Claude Mythos Preview was created by Anthropic.

What is the license for Claude Mythos Preview?

Claude Mythos Preview is released under the Proprietary license.

Is Claude Mythos Preview multimodal?

Yes, Claude Mythos Preview is multimodal and can accept both text and images as input.

Where can I use Claude Mythos Preview?

Claude Mythos Preview is available through 1 provider including Anthropic.

Where is the Claude Mythos Preview paper or technical report?

Claude Mythos Preview has a paper or technical report available at https://www.anthropic.com/claude-mythos-preview-system-card. Use that source for architecture, training, release and evaluation details.