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 3.5 Haiku | 127.2 | — | — | Closed | 22 Oct 2024 |
| 102 | Claude 3 Opus | 126.9 | — | — | Closed | 29 Feb 2024 |
| 103 | Gemini 1.5 Pro (May 2024) | 126.9 | — | — | Closed | 14 May 2024 |
| 104 | GPT-4o-mini | 126.6 | 128K | $0.15 | Closed | 18 Jul 2024 |
| 105 | GPT-4 Turbo (Nov 2023) | 126.5 | — | — | Closed | 25 Jan 2024 |
| 106 | GPT-4 (Mar 2023) | 125.9 | — | — | Closed | 14 Mar 2023 |
| 107 | Amazon Nova Pro | 123.8 | — | — | Closed | 3 Dec 2024 |
| 108 | GPT-4 (Jun 2023) | 123.1 | — | — | Closed | 13 Jun 2023 |
| 109 | Gemini 1.5 Flash (May 2024) | 122.6 | — | — | Closed | 23 May 2024 |
| 110 | Mistral Large | 122.0 | 128K | $2.00 | Closed | 26 Feb 2024 |
| 111 | Claude 3 Sonnet | 120.7 | — | — | Closed | 29 Feb 2024 |
| 112 | Claude Instant | 120.2 | — | — | Closed | 9 Aug 2023 |
| 113 | Claude 2 | 120.1 | — | — | Closed | 11 Jul 2023 |
| 114 | Claude 2.1 | 119.2 | — | — | Closed | 21 Nov 2023 |
| 115 | GPT-3.5 Turbo (Nov 2023) | 118.5 | — | — | Closed | 6 Nov 2023 |
| 116 | Claude 3 Haiku | 118.3 | — | — | Closed | 7 Mar 2024 |
| 117 | Ministral 3B | 118.1 | — | — | Closed | 16 Oct 2024 |
| 118 | Gemini 1.0 Pro | 117.0 | — | — | Closed | 13 Dec 2023 |
| 119 | Qwen2.5-Coder-14B | 116.3 | — | — | Closed | 18 Sep 2024 |
| 120 | GPT-3.5 Turbo (Jan 2024) | 115.6 | — | — | Closed | 25 Jan 2024 |
| 121 | PaLM 2-L | 114.8 | — | — | Closed | 17 May 2023 |
| 122 | GPT-3.5 Turbo (Jun 2023) | 113.1 | — | — | Closed | 13 Jun 2023 |
| 123 | internlm-20b | 111.8 | — | — | Closed | 18 Sep 2023 |
| 124 | DeepSeek-Coder-V2-Lite-Base | 108.6 | — | — | Closed | 13 Jun 2024 |
| 125 | PaLM 2-M | 108.0 | — | — | Closed | 17 May 2023 |
| 126 | Qwen2.5-Coder-3B | 107.4 | — | — | Closed | 18 Sep 2024 |
| 127 | Nemotron-4 15B | 107.4 | — | — | Closed | 26 Feb 2024 |
| 128 | Yi-9B | 107.3 | — | — | Closed | 1 Mar 2024 |
| 129 | PaLM 2-S | 105.8 | — | — | Closed | 17 May 2023 |
| 130 | Llama 2-34B | 104.8 | — | — | Closed | 18 Jul 2023 |
| 131 | internlm-7b | 102.4 | — | — | Closed | 5 Jul 2023 |
| 132 | INTELLECT-1 Prime Intellect,Hugging Face,Arcee AI | 100.4 | — | — | Closed | 29 Nov 2024 |
| 133 | chatglm2-6b | 98.4 | — | — | Closed | 24 Jun 2023 |
| 134 | CodeQwen1.5-7B | 94.2 | — | — | Closed | 15 Apr 2024 |
| 135 | vicuna-13b-v1.1 | 94.0 | — | — | Closed | 12 Apr 2023 |
| 136 | Qwen-1_8B | 92.3 | — | — | Closed | 30 Nov 2023 |
| 137 | open_llama_7b | 91.0 | — | — | Closed | 7 Jun 2023 |
| 138 | RedPajama-INCITE-7B-Base | 89.7 | — | — | Closed | 4 May 2023 |
| 139 | Qwen2.5-Coder-0.5B | 87.4 | — | — | Closed | 18 Sep 2024 |
| 140 | stablelm-tuned-alpha-7b | 54.3 | — | — | Closed | 19 Apr 2023 |
| 141 | Grok 4.7 (unknown) | — | — | — | Closed | 21 Sep 2026 |
| 142 | Grok 4.7 (xhigh) | — | — | — | Closed | 21 Sep 2026 |
| 143 | SWE-2 (max) | — | — | — | Closed | 10 Sep 2026 |
| 144 | Mercury 2.5 (unknown) | — | — | — | Closed | 8 Sep 2026 |
| 145 | GPT-6 Astra (none) | — | — | — | Closed | 3 Sep 2026 |
| 146 | GPT-6 Astra (low) | — | — | — | Closed | 3 Sep 2026 |
| 147 | GPT-6 Astra (medium) | — | — | — | Closed | 3 Sep 2026 |
| 148 | GPT-6 Astra (xhigh) | — | — | — | Closed | 3 Sep 2026 |
| 149 | GPT-6 Astra (pro, max) | — | — | — | Closed | 3 Sep 2026 |
| 150 | GPT-6 Astra (unknown thinking) | — | — | — | Closed | 3 Sep 2026 |
| 151 | Muse Spark 1.3 (xhigh) | — | — | — | Closed | 2 Sep 2026 |
| 152 | Gemini 3.8 Flash (unknown) | — | — | — | Closed | 2 Sep 2026 |
| 153 | Muse Spark 1.3 (unknown) | — | — | — | Closed | 2 Sep 2026 |
| 154 | Gemini 3.8 Flash (medium) | — | — | — | Closed | 2 Sep 2026 |
| 155 | Gemini 3.8 Flash (low) | — | — | — | Closed | 2 Sep 2026 |
| 156 | Qwen3.8 Max (0902) (xhigh) | — | — | — | Closed | 1 Sep 2026 |
| 157 | Claude Fable 5.1 (xhigh) | — | — | — | Closed | 1 Sep 2026 |
| 158 | Claude Fable 5.1 (medium) | — | — | — | Closed | 1 Sep 2026 |
| 159 | Claude Fable 5.1 (low) | — | — | — | Closed | 1 Sep 2026 |
| 160 | Claude Fable 5.1 (unknown) | — | — | — | Closed | 1 Sep 2026 |
| 161 | GLM-5.3 (unknown thinking) | — | — | — | Closed | 14 Aug 2026 |
| 162 | Gemini 3.7 Flash (medium) | — | — | — | Closed | 13 Aug 2026 |
| 163 | Gemini 3.7 Flash (low) | — | — | — | Closed | 13 Aug 2026 |
| 164 | Gemini 3.7 Flash (unknown) | — | — | — | Closed | 13 Aug 2026 |
| 165 | Grok 4.6 (xhigh) | — | — | — | Closed | 12 Aug 2026 |
| 166 | Grok 4.6 (medium) | — | — | — | Closed | 12 Aug 2026 |
| 167 | Grok 4.6 (low) | — | — | — | Closed | 12 Aug 2026 |
| 168 | Grok 4.6 (unknown) | — | — | — | Closed | 12 Aug 2026 |
| 169 | Muse Spark 1.2 (xhigh) | — | — | — | Closed | 5 Aug 2026 |
| 170 | Qwen3.8 Max (xhigh) | — | — | — | Closed | 2 Aug 2026 |
| 171 | Qwen3.8 Max (unknown) | — | — | — | Closed | 2 Aug 2026 |
| 172 | Claude Opus 5 (low) | — | — | — | Closed | 24 Jul 2026 |
| 173 | Claude Opus 5 (unknown) | — | — | — | Closed | 24 Jul 2026 |
| 174 | Claude Opus 5 (xhigh) | — | — | — | Closed | 24 Jul 2026 |
| 175 | Claude Opus 5 (medium) | — | — | — | Closed | 24 Jul 2026 |
| 176 | Gemini 3.6 Flash (medium) | — | — | — | Closed | 21 Jul 2026 |
| 177 | Gemini 3.5 Flash-Lite (medium) | — | — | — | Closed | 21 Jul 2026 |
| 178 | GPT-5.6 Sol (none) | — | — | — | Closed | 9 Jul 2026 |
| 179 | GPT-5.6 Terra (none) | — | — | — | Closed | 9 Jul 2026 |
| 180 | GPT-5.6 Sol (low) | — | — | — | Closed | 9 Jul 2026 |
| 181 | GPT-5.6 Luna (none) | — | — | — | Closed | 9 Jul 2026 |
| 182 | GPT-5.6 Terra (low) | — | — | — | Closed | 9 Jul 2026 |
| 183 | GPT-5.6 Luna (low) | — | — | — | Closed | 9 Jul 2026 |
| 184 | GPT-5.6 Sol (pro, max) | — | — | — | Closed | 9 Jul 2026 |
| 185 | GPT-5.6 Terra (medium) | — | — | — | Closed | 9 Jul 2026 |
| 186 | GPT-5.6 Luna (medium) | — | — | — | Closed | 9 Jul 2026 |
| 187 | GPT-5.6 Sol (xhigh) | — | — | — | Closed | 9 Jul 2026 |
| 188 | GPT-5.6 Terra (xhigh) | — | — | — | Closed | 9 Jul 2026 |
| 189 | GPT-5.6 Sol (medium) | — | — | — | Closed | 9 Jul 2026 |
| 190 | GPT-5.6 Luna (xhigh) | — | — | — | Closed | 9 Jul 2026 |
| 191 | GPT-5.6 Sol (pro, xhigh) | — | — | — | Closed | 9 Jul 2026 |
| 192 | GPT-5.6 Sol (pro, unknown thinking) | — | — | — | Closed | 9 Jul 2026 |
| 193 | GPT-5.6 Sol (unknown thinking) | — | — | — | Closed | 9 Jul 2026 |
| 194 | GPT-5.6 Terra (unknown thinking) | — | — | — | Closed | 9 Jul 2026 |
| 195 | GPT-5.6 Luna (unknown thinking) | — | — | — | Closed | 9 Jul 2026 |
| 196 | Grok 4.5 (medium) | — | — | — | Closed | 8 Jul 2026 |
| 197 | Grok 4.5 (low) | — | — | — | Closed | 8 Jul 2026 |
| 198 | Grok 4.5 (unknown thinking) | — | — | — | Closed | 8 Jul 2026 |
| 199 | Claude Sonnet 5 (xhigh) | — | — | — | Closed | 30 Jun 2026 |
| 200 | Claude Sonnet 5 (no thinking) | — | — | — | Closed | 30 Jun 2026 |