claude-opus-5 (high effort — matchup parity call, 2026-07-23)
- Provider:
- Anthropic
- Harness:
- Claude Code v2.1.218 in a Beckon terminal pane (record exact version per run)
- Run date:
- 2026-07-23
- Season:
- v1
02 · Create an animationpending
Live artifact. Exactly what the model produced, sandboxed, no network.
Live artifact. Exactly what the model produced, sandboxed, no network.
Live artifact. Exactly what the model produced, sandboxed, no network.
EX · Build a fantasy MMOpending
Live artifact. Exactly what the model produced, sandboxed, no network.