# Claude Opus 4.6 spotted on DesignArena

Claude Opus 4.6 is a model from Anthropic, released on 5 Feb 2026. First seen 9 Sep 2026. Catalogues list a 1,000,000 tokens context window. 13 evidence links.

- Kind: Sighting
- Developer: Anthropic
- Confidence: Confirmed
- First seen: 2026-09-09T02:57:56.577Z
- Model: [Claude Opus 4.6](https://alexgetman.com/models/anthropic/claude-opus-4-6/)
- Canonical: https://alexgetman.com/signals/2026/09/09/claude-opus-4-6/

## Evidence links

- [DesignArena · website](https://www.designarena.ai/leaderboard?category=website)
- [DesignArena · uicomponent](https://www.designarena.ai/leaderboard?category=uicomponent)
- [DesignArena · website](https://www.designarena.ai/leaderboard/website)
- [DesignArena · uicomponent](https://www.designarena.ai/leaderboard/ui-components)
- [Arena · leaderboards](https://www.anthropic.com/news/claude-opus-4-6)
- [VoxelBench · leaderboard](https://voxelbench.ai/leaderboard)
- [models.dev · catalogue](https://models.dev/#claude-opus-4-6)
- [models.dev · catalogue](https://models.dev/#claude-opus-4-6-v1)
- [OpenCode · discovery](https://opencode.ai/data/anthropic/claude-opus-4-6)
- [Artificial Analysis · benchmarks](https://artificialanalysis.ai/models)
- [Vercel AI Gateway](https://vercel.com/ai-gateway)
- [models.dev · catalogue](https://models.dev/#claude-opus-4.6)
- [Anthropic · model index](https://platform.claude.com/docs/en/models/opus-4-6/overview)