Claude Sonnet 5
Anthropic · Language model · Registered 2026-06-30
IDENTITY
Confirmed by
Confirmed via https://www.anthropic.com/news/claude-sonnet-5
First registered
2026-06-30 (GitHub — Claude Code)
Developer confirmed
2026-06-30
PROVENANCE
Claimed developer
Anthropic
Confirmed developer
Anthropic
PASSPORT FIELDS
Context window
2M tokens (primary), 1M tokens stable
PROVENANCE TIMELINE
2026-08-26
Correction: disposition authority vs execution actor
Source: stark-raaw
2024-09-01
First recorded in AI news