ModelClock
Release announced
Released on Sep 22, 2026
Impossibl announced this model on 2026-09-22.
- Hosting route
- Impossibl platform
- Affected scope
- Not stated in the notice
- Announced
- Sep 22, 2026
- First seen by ModelClock
- Oct 4, 2026
What the provider published
impossibl.com ↗anthropic/claude-opus-5-5
new model
claude opus 5.5 joins the ai api. it is anthropic's flagship opus model for long-running agentic coding, and it serves from our east us azure foundry deployment first, falling back to anthropic direct.
Read from the provider's text; the quote is the provider's exact lines.