Model intelligence
6 AI models
Capability (Epoch Capabilities Index and individual benchmarks from Epoch AI), API list prices and context windows (OpenRouter), release dates and open-weight status. Benchmarks are shown individually - never merged into one invented score.
Epoch Capabilities Index by release date
Capability frontier
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.
Blended $/1M tokens (3:1 input:output) vs ECI
Price vs capability
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 |
|---|---|---|---|---|---|---|
| 1 | Aion 3.5 AionLabs· reasoning | — | 262K | $3.00 | ? | 23 Sep 2026 |
| 2 | Aion 3.5 Mini AionLabs· reasoning | — | 262K | $0.70 | ? | 23 Sep 2026 |
| 3 | Aion-3.0 AionLabs· reasoning | — | 131K | $3.00 | ? | 7 Jul 2026 |
| 4 | Aion-3.0-Mini AionLabs· reasoning | — | 131K | $0.70 | ? | 7 Jul 2026 |
| 5 | Aion-2.0 AionLabs· reasoning | — | 131K | $0.80 | ? | 23 Feb 2026 |
| 6 | Aion-RP 1.0 (8B) | — | 33K | $0.80 | ? | 4 Feb 2025 |
Showing 6 of 6. Benchmark cells are % (best reported setting). 3.8K benchmark results in total.Export CSV