Anthropic · Claude
Claude Mythos
Activesource:wikidata https://www.wikidata.org/wiki/Q139890065
About this version
Claude Mythos is the flagship version of Anthropic’s Claude family, launched on 9 June 2026 and currently active. It incorporates a knowledge base up to January 2026 and supports an unusually large context window of one million tokens, enabling it to process substantially longer inputs than prior releases.
- API string
- claude-mythos-5
- Context window
- 1M ctx
- Knowledge cutoff
- Jan 1, 2026
- Tier
- Flagship
- Released
- Jun 9, 2026
Release & change timeline
1 event- Release
Claude Mythos 5 released
Mythos-class weights without safety classifiers; restricted to Project Glasswing partners (not public).
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Pick the closest match below, edit the body, and post. Your report carries the #claude tag automatically so it surfaces here + in the trending-tags rail. Reporting also follows Claude so you’ll get status updates.
Part of the Claude version timeline. Catch Me Up — everything that changed across AI & smart home ↗