Source: Epoch AI (CC BY 4.0). ECI is Epoch's item-response model over many benchmarks; each model page shows its 90% confidence interval.
Only models with both an ECI score and an OpenRouter price. Normalisation: 75% input + 25% output price. Click a point to open the model.
| # | Model | ECI ↓ | Context | In $/M | Weights | Released |
|---|---|---|---|---|---|---|
| 101 | Claude 3.7 Sonnet (64k thinking) | — | — | — | Closed | 24 Feb 2025 |
| 102 | Claude 3.7 Sonnet (32k thinking) | — | — | — | Closed | 24 Feb 2025 |
| 103 | Claude 3.7 Sonnet (16k thinking) | — | — | — | Closed | 24 Feb 2025 |
| 104 | Claude 3.7 Sonnet (8k thinking) | — | — | — | Closed | 24 Feb 2025 |
| 105 | Claude 3.7 Sonnet (1k thinking) | — | — | — | Closed | 24 Feb 2025 |
| 106 | Claude 3.7 Sonnet (2k thinking) | — | — | — | Closed | 24 Feb 2025 |
| 107 | Claude 3.7 Sonnet (15k thinking) | — | — | — | Closed | 24 Feb 2025 |
| 108 | Claude 3.7 Sonnet (unknown thinking) | — | — | — | Closed | 24 Feb 2025 |
| 109 | Claude 3.7 Sonnet (12k thinking) | — | — | — | Closed | 24 Feb 2025 |
| 110 | Claude 3.5 Haiku (Oct 2024) | — | — | — | Closed | 22 Oct 2024 |
| 111 | Claude 3.5 Sonnet (Oct 2024) | — | — | — | Closed | 22 Oct 2024 |
| 112 | Claude 3.5 Sonnet (Jun 2024) | — | — | — | Closed | 20 Jun 2024 |
| 113 | Claude 1.3 | — | — | — | Closed | 18 Apr 2023 |