We spotted Obsidian 3 eleven days ago 🪨 It was one of four unannounced codenames we found in Devin's Next build on Oct 17. Now it has surfaced in Cognition's FrontierCode 2.0 data, before being pulled: - 46.8% at high effort, about $8.62 per task - Claude Opus 5.5, #1 on the public board, scores 45.5% - It reportedly ran in the claude-code harness, which only Claude models use there That points to an unreleased Anthropic model.
- Status
- Leaked, not yet released
- Maker
- Anthropic (likely)
- Found in
- cognition.com cognition.com
- Detected
- Posted to X
- 0 s after detection
- Model ID
Obsidian 3also listed asobsidian-3