Claude Sonnet 5 (xhigh)
ModelActiveby Anthropic · family “claude-sonnet-xhigh”
Epoch Capabilities Index
Not scored by Epoch AI
Released
30 Jun 2026
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Unknown
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Input $ / 1M tokens
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Output $ / 1M tokens
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Cached input $ / 1M
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Each benchmark shown separately with its own source
Benchmark results (7)
| Benchmark | Domain | Score | vs best recorded | Setting | Run | Source |
|---|---|---|---|---|---|---|
| LMCA | agents | 48.8% | 75% | xhigh | — | External ↗ |
| DTBench | reasoning | 89.5% | 91% | xhigh | — | External ↗ |
| DeepSWE | coding | 49.7% | 67% | xhigh | — | External ↗ |
| Chess Puzzles | games | 35.0% ±4.8 | 49% | xhigh | 30 Jun 2026 | Epoch ↗ |
| SimpleQA Verified | knowledge | 32.9% ±1.5 | 44% | xhigh | 27 Aug 2026 | Eval log ↗ |
| OTIS Mock AIME 2024-2025 | math | 94.7% ±2.3 | 95% | xhigh | 1 Jul 2026 | Epoch ↗ |
| GPQA diamond | science | 90.5% ±1.8 | 95% | xhigh | 1 Jul 2026 | Epoch ↗ |
Source: Epoch AI Benchmarking Hub (CC BY 4.0). “External” rows are leaderboard results Epoch collects from third parties. Best reported setting per benchmark is shown.
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0 observations (OpenRouter listing). History accumulates with every ingest run; a single point means no change has been observed yet.
Events
- Benchmark33d agoEpoch AI evaluates Claude Sonnet 5 (xhigh)Epoch AI Benchmarking Hub
- Model launch3mo agoAnthropic releases Claude Sonnet 5 (xhigh)Epoch AI Benchmarking Hub