Claude Mythos 5.5

Name: Claude Mythos 5.5
Author: Anthropic

ClosedRumoredGeneral LLM

Claude Mythos 5.5 is a closed-weight model from Anthropic in the claude-mythos family. The collected facts provide no details on its capabilities, so refer to official documentation for specifics.

—context

—per 1M tokens (in / out)

—parameters

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Specs

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Licence—

Commercial useUnknown

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Familyclaude-mythos

API price

USD per 1M tokens

No public API price yet.

News timeline

from the AITOP feed, one story per eventAll 4 →

2026-11-02

GPT-6.2 Astra开启灰测，Claude Mythos 5.5同日曝光量子位

2026-11-01

Anthropic 官网被曝出现 Claude Mythos 5.5 字样TestingCatalog

Anthropic 官网 HTML 源码中出现 Mythos 5.5 字样kimmonismus