Release

Anthropic launches Claude Fable 5.2 and Claude Mythos 5.2

Anthropic launched Claude Fable 5.2, available on the Claude API, Claude Platform on AWS, and Claude Models on Google Cloud. Claude Mythos 5.2 offers the same capabilities only to organizations verified through Anthropic’s verification programs; both models have a 1 million token context window, 128,000 max output tokens, and cost $8 per million input tokens and $40 per million output tokens.

Context
1M
Max output
128K
Input price
$8.00Also priced under other conditions: Batch
Knowledge cutoff
Jun 2026

Claude Developer Platform release notes ↗

Source: Claude Developer Platform release notes, checked Nov 9, 2026. Summarized from the provider’s announcement.