Model intelligence
5 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 | Sonar Pro Search Perplexity· reasoning | — | 200K | $3.00 | ? | 30 Oct 2025 |
| 2 | Sonar Pro | — | 200K | $3.00 | ? | 7 Mar 2025 |
| 3 | Sonar Reasoning Pro Perplexity· reasoning | — | 128K | $2.00 | ? | 7 Mar 2025 |
| 4 | Sonar Deep Research Perplexity· reasoning | — | 128K | $2.00 | ? | 7 Mar 2025 |
| 5 | Sonar | — | 127K | $1.00 | ? | 27 Jan 2025 |
Showing 5 of 5. Benchmark cells are % (best reported setting). 3.8K benchmark results in total.Export CSV