Claude Sonnet 5 (Low): benchmark results
Provider: Anthropic. Released 2026-06-30. Access: API.
Unified ELO 1619 ± 1, rank #508 of 3078 rated models, from 9 benchmark results.
Strongest benchmark results
| Benchmark | Score | Metric | Percentile |
|---|---|---|---|
| Conceptual Reasoning Index - Argument Evaluation (LMCA) | 49.65 | Chance-Corrected Score (0-100) | 77.6 |
| Conceptual Reasoning Index - Consistency (ACCoRD) | 69.47 | Chance-Corrected Score (0-100) | 58.7 |
| Conceptual Reasoning Index | 54.88 | Chance-Corrected Score (0-100) | 57.1 |
| Conceptual Reasoning Index - Decision Theory (DTBench) | 56 | Chance-Corrected Score (0-100) | 42.5 |
| ObviousBench | 82.64 | Answer pass³ (%) | 36.1 |
| Epoch AI - Cursorbench | 47.7 | Score | 10.3 |
| DataBench | 55 | Score (%) | 6.5 |
| ReactBench | 17.3 | Pass@1 (%) | 6.5 |
| CursorBench 4.0 | 24.1 | Score (%) | 5.3 |
Interactive version: theaggregate.ai/model?slug=claude-sonnet-5-low · How It Works · Data refreshed daily, snapshot 2026-09-19.