Model intelligence
114 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 |
|---|---|---|---|---|---|---|
| 101 | GPT-4o (2024-11-20) | — | 128K | $2.50 | ? | 20 Nov 2024 |
| 102 | GPT-4o (2024-08-06) | — | 128K | $2.50 | ? | 6 Aug 2024 |
| 103 | GPT-4o-mini (2024-07-18) | — | 128K | $0.15 | ? | 18 Jul 2024 |
| 104 | GPT-4o | — | 128K | $2.50 | ? | 13 May 2024 |
| 105 | GPT-4o (2024-05-13) | — | 128K | $5.00 | ? | 13 May 2024 |
| 106 | GPT-4 Turbo | — | 128K | $10.0 | ? | 9 Apr 2024 |
| 107 | GPT-3.5 Turbo (older v0613) | — | 4K | $1.00 | ? | 25 Jan 2024 |
| 108 | GPT-4 Turbo Preview (January 2024) | — | — | — | Closed | 25 Jan 2024 |
| 109 | GPT-4 Turbo Preview (Nov 2023) | — | — | — | Closed | 6 Nov 2023 |
| 110 | GPT-3.5 Turbo Instruct | — | 4K | $1.50 | ? | 28 Sep 2023 |
| 111 | GPT-3.5 Turbo 16k | — | 16K | $3.00 | ? | 28 Aug 2023 |
| 112 | GPT-3.5 Turbo (June 2023) | — | — | — | Closed | 13 Jun 2023 |
| 113 | GPT-4 | — | 8K | $30.0 | ? | 28 May 2023 |
| 114 | GPT-3.5 Turbo | — | 16K | $0.50 | ? | 28 May 2023 |
Showing 14 of 114. Benchmark cells are % (best reported setting). 3.9K benchmark results in total.← PrevExport CSV