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Models/Claude Mythos Preview
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Anthropic: Claude Mythos Preview

claude-mythos-preview

Claude Mythos Preview is Anthropic’s proprietary AI model, released Apr 7, 2026.

Context
Input
/ 1M
Output
/ 1M
Released
Apr 7, 2026
Modalities

Benchmarks

Scores on standardized evaluations. Higher is better — and rank shows where Claude Mythos Preview lands among all models tracked on Model Beat.

No standardized benchmark scores from Epoch AI yet — common for very recent, image, or niche models. Scores appear here once published.

In the news

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Frequently asked questions

What is Claude Mythos Preview?

Claude Mythos Preview is a Claude-family AI model, from Anthropic, released Apr 7, 2026.

Who created Claude Mythos Preview?

Claude Mythos Preview is an AI model developed by Anthropic, part of the Claude family, released Apr 7, 2026.

Is Claude Mythos Preview open source?

Claude Mythos Preview is a proprietary model (Unreleased), available through its provider's API rather than as a downloadable open-weight model.

Benchmark data from Epoch AI (CC BY) and Artificial Analysis; pricing, specs & descriptions from OpenRouter. Data updated Sep 10, 2026.