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 | GPT-6 Sol (batch) OpenAI· reasoning | — | 1.05M | $1.00 | ? | 22 Sep 2026 |
| 102 | GPT-5.6 Sol (batch) OpenAI· reasoning | — | 1.05M | $1.00 | ? | 9 Jul 2026 |
| 103 | Grok 4.7 xAI· reasoning | — | 500K | $1.60 | ? | 21 Sep 2026 |
| 104 | MiMo-V2.6-Pro Xiaomi· reasoning | — | 1.05M | $0.43 | Open source | 21 Sep 2026 |
| 105 | GLM 5.3 (batch) Z.ai (Zhipu AI)· reasoning | — | 1.05M | $0.45 | Open source | 18 Aug 2026 |
| 106 | Kimi K3 (batch) Moonshot AI· reasoning | — | 1.05M | $2.28 | Open source | 16 Jul 2026 |
| 107 | GPT-5.6 Terra (batch) OpenAI· reasoning | — | 1.05M | $1.00 | ? | 9 Jul 2026 |
| 108 | GLM 5.3 Flash (batch) Z.ai (Zhipu AI)· reasoning | — | 1.05M | $0.060 | Open source | 26 Aug 2026 |
| 109 | Claude Opus 4.8 (batch) Anthropic· reasoning | — | 1M | $2.50 | ? | 27 May 2026 |
| 110 | Gemini 3.8 Flash (batch) Google· reasoning | — | 1.05M | $0.38 | ? | 2 Sep 2026 |
| 111 | Qwen3.8 2.4T A95B Alibaba (Qwen)· reasoning | — | 1.05M | $2.00 | Open source | 12 Aug 2026 |
| 112 | DeepSeek V4.1 Flash (batch) DeepSeek· reasoning | — | 1.05M | $0.11 | Open source | 10 Sep 2026 |
| 113 | Gemini 3.7 Flash (batch) Google· reasoning | — | 1.05M | $0.38 | ? | 13 Aug 2026 |
| 114 | GPT-5.5 (batch) OpenAI· reasoning | — | 1.05M | $2.50 | ? | 24 Apr 2026 |
| 115 | Claude Sonnet 5 (batch) Anthropic· reasoning | — | 1M | $1.00 | ? | 30 Jun 2026 |
| 116 | MiMo-V2.6-Flash Xiaomi· reasoning | — | 1.05M | $0.14 | Open source | 21 Sep 2026 |
| 117 | GPT-6 Luna OpenAI· reasoning | — | 1.05M | $0.10 | ? | 22 Sep 2026 |
| 118 | GPT-6 Luna (batch) OpenAI· reasoning | — | 1.05M | $0.050 | ? | 22 Sep 2026 |
| 119 | GPT-5.6 Luna (batch) OpenAI· reasoning | — | 1.05M | $0.10 | ? | 9 Jul 2026 |
| 120 | Gemini 3.6 Flash (batch) Google· reasoning | — | 1.05M | $0.38 | ? | 21 Jul 2026 |
| 121 | Qwen3.8 27B Alibaba (Qwen)· reasoning | — | 1M | $0.42 | Open source | 14 Aug 2026 |
| 122 | Gemini 3.5 Flash (batch) Google· reasoning | — | 1.05M | $0.75 | ? | 19 May 2026 |
| 123 | Claude Sonnet 4.6 (batch) Anthropic· reasoning | — | 1M | $1.50 | ? | 17 Feb 2026 |
| 124 | Gemini 3.1 Pro Preview Google· reasoning | — | 1.05M | $2.00 | ? | 19 Feb 2026 |
| 125 | Gemini 3.1 Pro Preview (batch) Google· reasoning | — | 1.05M | $1.00 | ? | 19 Feb 2026 |
| 126 | MiMo-V2.5-Pro Xiaomi· reasoning | — | 1.05M | $0.43 | Open source | 22 Apr 2026 |
| 127 | Hy3 preview Tencent· reasoning | — | 262K | $0.18 | Open source | 22 Apr 2026 |
| 128 | Grok 4.3 xAI· reasoning | — | 1M | $1.25 | ? | 30 Apr 2026 |
| 129 | Grok 4.3 (batch) xAI· reasoning | — | 1M | $1.00 | ? | 30 Apr 2026 |
| 130 | Ling 3.0 Flash VL inclusionAI (Ant Group)· reasoning | — | 262K | $0.021 | Open source | 10 Sep 2026 |
| 131 | GPT-5.4 Mini (batch) OpenAI· reasoning | — | 400K | $0.38 | ? | 17 Mar 2026 |
| 132 | Ling 3.0 Flash Fin inclusionAI (Ant Group)· reasoning | — | 262K | $0.060 | ? | 27 Aug 2026 |
| 133 | Gemini 3.5 Flash Lite (batch) Google· reasoning | — | 1.05M | $0.15 | ? | 21 Jul 2026 |
| 134 | GPT-5.4 Nano (batch) OpenAI· reasoning | — | 400K | $0.10 | ? | 17 Mar 2026 |
| 135 | Claude Sonnet 4.5 (batch) Anthropic· reasoning | — | 1M | $1.50 | ? | 29 Sep 2025 |
| 136 | LongCat 2.0 Meituan· reasoning | — | 1.05M | $0.30 | Open source | 20 Jul 2026 |
| 137 | Qwen3.6 35B A3B Alibaba (Qwen)· reasoning | — | 262K | $0.15 | Open source | 27 Apr 2026 |
| 138 | Claude Haiku 4.5 (batch) Anthropic· reasoning | — | 200K | $0.50 | ? | 15 Oct 2025 |
| 139 | GPT-5 Mini (batch) OpenAI· reasoning | — | 400K | $0.13 | ? | 7 Aug 2025 |
| 140 | Gemini 2.5 Pro Google· reasoning | — | 1.05M | $1.25 | ? | 17 Jun 2025 |
| 141 | Gemini 2.5 Pro (batch) Google· reasoning | — | 1.05M | $0.63 | ? | 17 Jun 2025 |
| 142 | Gemini 3.1 Flash Lite Preview Google· reasoning | — | 1.05M | $0.25 | ? | 3 Mar 2026 |
| 143 | Qwen3.5-122B-A10B Alibaba (Qwen)· reasoning | — | 262K | $0.26 | Open source | 25 Feb 2026 |
| 144 | DeepSeek V3.1 Terminus DeepSeek· reasoning | — | 164K | $0.27 | Open source | 22 Sep 2025 |
| 145 | Mistral Medium 3.5 (batch) Mistral AI· reasoning | — | 262K | $0.75 | ? | 30 Apr 2026 |
| 146 | Nemotron 3.5 Lightning NVIDIA· reasoning | — | 1M | $0.080 | Open source | 11 Aug 2026 |
| 147 | Nemotron 3 Super NVIDIA· reasoning | — | 262K | $0.080 | Open source | 11 Mar 2026 |
| 148 | Qwen3 235B A22B Thinking 2507 Alibaba (Qwen)· reasoning | — | 131K | $0.23 | Open source | 25 Jul 2025 |
| 149 | Mercury 2.5 Inception Labs· reasoning | — | 260K | $0.040 | ? | 8 Sep 2026 |
| 150 | gpt-oss-120b (batch) OpenAI· reasoning | — | 131K | $0.030 | Open source | 5 Aug 2025 |
| 151 | Mistral Small 4 Mistral AI· reasoning | — | 262K | $0.15 | Open source | 16 Mar 2026 |
| 152 | Mistral Small 4 (batch) Mistral AI· reasoning | — | 262K | $0.075 | Open source | 16 Mar 2026 |
| 153 | Granite 4.2 8B IBM· reasoning | — | 131K | $0.060 | Open source | 31 Aug 2026 |
| 154 | o3 Mini High OpenAI· reasoning | — | 200K | $1.10 | ? | 12 Feb 2025 |
| 155 | Trinity Large Thinking Arcee AI· reasoning | — | 262K | $0.25 | Open source | 1 Apr 2026 |
| 156 | Qwen3 30B A3B Thinking 2507 Alibaba (Qwen)· reasoning | — | 82K | $0.20 | Open source | 28 Aug 2025 |
| 157 | gpt-oss-20b (batch) OpenAI· reasoning | — | 131K | $0.024 | Open source | 5 Aug 2025 |
| 158 | Nemotron 3 Nano 30B A3B NVIDIA· reasoning | — | 262K | $0.050 | Open source | 14 Dec 2025 |
| 159 | Solar Pro 3 Upstage· reasoning | — | 131K | $0.15 | ? | 27 Jan 2026 |
| 160 | Claude Sonnet 5.5 Anthropic· reasoning | — | 1M | $2.00 | ? | 28 Sep 2026 |
| 161 | Claude Sonnet 5.5 (batch) Anthropic· reasoning | — | 1M | $1.00 | ? | 28 Sep 2026 |
| 162 | Perceptron Mk1.5 Perceptron· reasoning | — | 37K | $0.15 | ? | 25 Sep 2026 |
| 163 | Ember-1 Fireworks AI· reasoning | — | 1.05M | $3.00 | ? | 24 Sep 2026 |
| 164 | GLM 5.3 Prime Z.ai (Zhipu AI)· reasoning | — | 1M | $2.80 | ? | 23 Sep 2026 |
| 165 | Aion 3.5 AionLabs· reasoning | — | 262K | $3.00 | ? | 23 Sep 2026 |
| 166 | Solar Mini 4 Upstage· reasoning | — | 524K | $0.050 | ? | 23 Sep 2026 |
| 167 | Qwen3.8 Max Prime Alibaba (Qwen)· reasoning | — | 1M | $4.00 | ? | 23 Sep 2026 |
| 168 | Aion 3.5 Mini AionLabs· reasoning | — | 262K | $0.70 | ? | 23 Sep 2026 |
| 169 | GPT-6 Sol Pro OpenAI· reasoning | — | 1.05M | $2.00 | ? | 22 Sep 2026 |
| 170 | GPT-6 Luna Pro OpenAI· reasoning | — | 1.05M | $0.10 | ? | 22 Sep 2026 |
| 171 | GPT-6 Sol Pro (batch) OpenAI· reasoning | — | 1.05M | $1.00 | ? | 22 Sep 2026 |
| 172 | GPT-6 Luna Pro (batch) OpenAI· reasoning | — | 1.05M | $0.050 | ? | 22 Sep 2026 |
| 173 | Qwen3.8 Omni Flash Alibaba (Qwen)· reasoning | — | 1M | $0.15 | ? | 21 Sep 2026 |
| 174 | MiMo-V2.6-Pro-UltraSpeed Xiaomi· reasoning | — | 1.05M | $4.35 | ? | 21 Sep 2026 |
| 175 | GLM 5.3 FlashX Z.ai (Zhipu AI)· reasoning | — | 1.05M | $0.37 | ? | 18 Sep 2026 |
| 176 | Ternary Bonsai 2 27B PrismML· reasoning | — | 262K | $0.075 | Open source | 18 Sep 2026 |
| 177 | Fugu Max Sakana AI· reasoning | — | 1M | $2.00 | ? | 11 Sep 2026 |
| 178 | Fugu Ultra v2 Sakana AI· reasoning | — | 1M | $5.00 | ? | 11 Sep 2026 |
| 179 | Nex-N2.5-Pro Nex AGI· reasoning | — | 262K | $0.075 | Open source | 8 Sep 2026 |
| 180 | Nex-N2.5-Mini Nex AGI· reasoning | — | 262K | $0.025 | Open source | 8 Sep 2026 |
| 181 | GPT-6 Astra Pro OpenAI· reasoning | — | 1.05M | $10.0 | ? | 4 Sep 2026 |
| 182 | GPT-6 Astra Pro (batch) OpenAI· reasoning | — | 1.05M | $5.00 | ? | 4 Sep 2026 |
| 183 | Muse Spark 1.3 Contributor Meta· reasoning | — | 1.05M | $0.10 | ? | 2 Sep 2026 |
| 184 | Hy4 preview Tencent· reasoning | — | 1.05M | $0.83 | Open source | 28 Aug 2026 |
| 185 | Qwen3.8 Flash Alibaba (Qwen)· reasoning | — | 1M | $0.15 | Open source | 26 Aug 2026 |
| 186 | Muse Spark 1.2 Contributor Meta· reasoning | — | 1.05M | $0.10 | ? | 21 Aug 2026 |
| 187 | DeepSeek V4 Flash Vision Exp DeepSeek· reasoning | — | 1.05M | $0.44 | Open source | 21 Aug 2026 |
| 188 | Seed-2.0-Code ByteDance· reasoning | — | 262K | $0.50 | ? | 12 Aug 2026 |
| 189 | Seed 2.1 Turbo ByteDance· reasoning | — | 262K | $0.50 | ? | 12 Aug 2026 |
| 190 | Sakana Namazu Sakana AI· reasoning | — | 262K | $0.95 | ? | 11 Aug 2026 |
| 191 | Solar Pro 4 Upstage· reasoning | — | 524K | $0.090 | ? | 10 Aug 2026 |
| 192 | Muse Glimmer 30B Meta· reasoning | — | 131K | $0.30 | Open source | 9 Aug 2026 |
| 193 | Ling 3.0 Flash inclusionAI (Ant Group)· reasoning | — | 262K | $0.021 | Open source | 23 Jul 2026 |
| 194 | Laguna S 2.1 Poolside· reasoning | — | 1.05M | $0.090 | Open source | 21 Jul 2026 |
| 195 | GPT-5.6 Sol Pro OpenAI· reasoning | — | 1.05M | $4.00 | ? | 9 Jul 2026 |
| 196 | GPT-5.6 Luna Pro OpenAI· reasoning | — | 1.05M | $0.20 | ? | 9 Jul 2026 |
| 197 | GPT-5.6 Terra Pro OpenAI· reasoning | — | 1.05M | $2.00 | ? | 9 Jul 2026 |
| 198 | GPT-5.6 Sol Pro (batch) OpenAI· reasoning | — | 1.05M | $1.00 | ? | 9 Jul 2026 |
| 199 | GPT-5.6 Luna Pro (batch) OpenAI· reasoning | — | 1.05M | $0.10 | ? | 9 Jul 2026 |
| 200 | GPT-5.6 Terra Pro (batch) OpenAI· reasoning | — | 1.05M | $1.00 | ? | 9 Jul 2026 |