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 |
|---|---|---|---|---|---|---|
| 1 | Qwen3 8B Alibaba (Qwen)· reasoning | 136.2 | 131K | $0.12 | Open source | 28 Apr 2025 |
| 2 | Qwen3 30B A3B Alibaba (Qwen)· reasoning | 136.2 | 131K | $0.12 | Open source | 29 Apr 2025 |
| 3 | gpt-oss-20b OpenAI· reasoning | 137.8 | 131K | $0.018 | Open source | 5 Aug 2025 |
| 4 | Qwen3 14B Alibaba (Qwen)· reasoning | 138.2 | 131K | $0.12 | Open source | 29 Apr 2025 |
| 5 | Qwen3 32B Alibaba (Qwen)· reasoning | 138.5 | 131K | $0.080 | Open source | 29 Apr 2025 |
| 6 | R1 DeepSeek· reasoning | 139.0 | 64K | $0.70 | Open source | 20 Jan 2025 |
| 7 | Qwen3 235B A22B Alibaba (Qwen)· reasoning | 139.4 | 131K | $0.46 | Open source | 28 Apr 2025 |
| 8 | GPT-5 Nano OpenAI· reasoning | 139.4 | 400K | $0.050 | Closed | 7 Aug 2025 |
| 9 | Qwen3.5-9B Alibaba (Qwen)· reasoning | 139.4 | 262K | $0.10 | Open source | 24 Feb 2026 |
| 10 | DeepSeek V3.1 DeepSeek· reasoning | 139.9 | 164K | $0.25 | Open source | 21 Aug 2025 |
| 11 | gpt-oss-120b OpenAI· reasoning | 139.9 | 131K | $0.15 | Open source | 5 Aug 2025 |
| 12 | o3 Mini OpenAI· reasoning | 140.3 | 200K | $1.10 | Closed | 31 Jan 2025 |
| 13 | Mistral Medium 3.5 Mistral AI· reasoning | 141.4 | 262K | $1.50 | Open source | 28 Apr 2026 |
| 14 | Claude Sonnet 4 Anthropic· reasoning | 141.7 | 200K | $3.00 | Closed | 22 May 2025 |
| 15 | Gemma 4 26B A4B Google· reasoning | 141.8 | 262K | $0.090 | Open source | 2 Apr 2026 |
| 16 | o1 OpenAI· reasoning | 141.9 | 200K | $15.0 | Closed | 17 Dec 2024 |
| 17 | Qwen3 Max Alibaba (Qwen)· reasoning | 142.4 | 262K | $0.78 | Closed | 24 Sep 2025 |
| 18 | Claude Haiku 4.5 Anthropic· reasoning | 142.4 | 200K | $1.00 | Closed | 15 Oct 2025 |
| 19 | Qwen3.5-35B-A3B Alibaba (Qwen)· reasoning | 142.5 | 262K | $0.16 | Open source | 24 Feb 2026 |
| 20 | Gemma 4 31B Google· reasoning | 142.7 | 262K | $0.090 | Open source | 2 Apr 2026 |
| 21 | GLM 4.7 Z.ai (Zhipu AI)· reasoning | 143.5 | 205K | $0.60 | Open source | 22 Dec 2025 |
| 22 | Claude Opus 4.1 Anthropic· reasoning | 144.1 | 200K | $15.0 | Closed | 5 Aug 2025 |
| 23 | Gemini 3.1 Flash Lite Google· reasoning | 144.4 | 1.05M | $0.25 | Closed | 3 Mar 2026 |
| 24 | Qwen3.7 Flash Alibaba (Qwen)· reasoning | 144.6 | 1M | $0.030 | Closed | 27 Jul 2026 |
| 25 | DeepSeek V3.2 Exp DeepSeek· reasoning | 145.0 | 164K | $0.13 | Open source | 29 Sep 2025 |
| 26 | Gemini 3.5 Flash Lite Google· reasoning | 145.1 | 1.05M | $0.30 | Closed | 21 Jul 2026 |
| 27 | GPT-5 Mini OpenAI· reasoning | 145.5 | 400K | $0.25 | Closed | 7 Aug 2025 |
| 28 | o4 Mini OpenAI· reasoning | 145.6 | 200K | $1.10 | Closed | 16 Apr 2025 |
| 29 | GPT-5.4 Nano OpenAI· reasoning | 145.8 | 400K | $0.20 | Closed | 17 Mar 2026 |
| 30 | MiniMax M2.7 MiniMax· reasoning | 145.8 | 205K | $0.30 | Open source | 18 Mar 2026 |
| 31 | GLM 5 Z.ai (Zhipu AI)· reasoning | 145.8 | 205K | $0.60 | Open source | 11 Feb 2026 |
| 32 | Kimi K2 Thinking Moonshot AI· reasoning | 146.0 | 262K | $0.60 | Open source | 6 Nov 2025 |
| 33 | DeepSeek V4 Flash 0423 DeepSeek· reasoning | 146.1 | 1.05M | $0.062 | Open source | 24 Apr 2026 |
| 34 | Nemotron 3 Ultra NVIDIA· reasoning | 146.2 | 262K | $0.60 | Open source | 4 Jun 2026 |
| 35 | DeepSeek V3.2 DeepSeek· reasoning | 146.3 | 164K | $0.28 | Open source | 1 Dec 2025 |
| 36 | Qwen3.6 27B Alibaba (Qwen)· reasoning | 146.5 | 262K | $0.32 | Open source | 22 Apr 2026 |
| 37 | Qwen3.5 397B A17B Alibaba (Qwen)· reasoning | 146.6 | 262K | $0.55 | Open source | 13 Feb 2026 |
| 38 | MiniMax M2.5 MiniMax· reasoning | 146.7 | 205K | $0.27 | Open source | 12 Feb 2026 |
| 39 | Claude Sonnet 4.5 Anthropic· reasoning | 146.8 | 1M | $3.00 | Closed | 29 Sep 2025 |
| 40 | o3 OpenAI· reasoning | 146.9 | 200K | $2.00 | Closed | 16 Apr 2025 |
| 41 | MiniMax M3 MiniMax· reasoning | 147.0 | 1.05M | $0.30 | Open source | 1 Jun 2026 |
| 42 | Qwen3.7 Plus Alibaba (Qwen)· reasoning | 147.4 | 1M | $0.32 | Closed | 2 Jun 2026 |
| 43 | o3 Pro OpenAI· reasoning | 147.4 | 200K | $20.0 | Closed | 10 Jun 2025 |
| 44 | Kimi K2.5 Moonshot AI· reasoning | 148.1 | 262K | $0.45 | Open source | 27 Jan 2026 |
| 45 | Inkling Thinking Machines Lab· reasoning | 148.6 | 524K | $1.00 | Open source | 15 Jul 2026 |
| 46 | GPT-5.4 Mini OpenAI· reasoning | 148.8 | 400K | $0.75 | Closed | 17 Mar 2026 |
| 47 | DeepSeek V4 Pro 0423 DeepSeek· reasoning | 149.1 | 1.05M | $0.78 | Open source | 24 Apr 2026 |
| 48 | GPT-5.1 OpenAI· reasoning | 149.7 | 400K | $1.25 | Closed | 13 Nov 2025 |
| 49 | GLM 5.1 Z.ai (Zhipu AI)· reasoning | 149.9 | 205K | $0.96 | Open source | 7 Apr 2026 |
| 50 | GPT-5 OpenAI· reasoning | 150.0 | 400K | $1.25 | Closed | 7 Aug 2025 |
| 51 | Kimi K2.7 Code Moonshot AI· reasoning | 150.0 | 262K | $0.66 | Open source | 12 Jun 2026 |
| 52 | Claude Opus 4.5 Anthropic· reasoning | 150.1 | 200K | $5.00 | Closed | 24 Nov 2025 |
| 53 | Inkling Small Thinking Machines Lab· reasoning | 150.1 | 524K | $0.45 | Open source | 15 Jul 2026 |
| 54 | GPT-5 Pro OpenAI· reasoning | 150.3 | 400K | $15.0 | Closed | 7 Oct 2025 |
| 55 | Kimi K2.6 Moonshot AI· reasoning | 151.0 | 262K | $0.65 | Open source | 20 Apr 2026 |
| 56 | GLM 5.2 Z.ai (Zhipu AI)· reasoning | 151.8 | 1.05M | $0.65 | Open source | 16 Jun 2026 |
| 57 | GLM 5.3 Flash Z.ai (Zhipu AI)· reasoning | 151.9 | 1.31M | $0.15 | Open source | 20 Aug 2026 |
| 58 | Grok 4.20 xAI· reasoning | 152.0 | 2M | $1.25 | Closed | 17 Feb 2026 |
| 59 | Claude Sonnet 4.6 Anthropic· reasoning | 152.3 | 1M | $3.00 | Closed | 17 Feb 2026 |
| 60 | GPT-5.2 OpenAI· reasoning | 153.4 | 400K | $1.75 | Closed | 11 Dec 2025 |
| 61 | Qwen3.7 Max Alibaba (Qwen)· reasoning | 153.7 | 1M | $1.48 | Closed | 19 May 2026 |
| 62 | Grok 4.5 xAI· reasoning | 154.0 | 500K | $2.00 | Closed | 8 Jul 2026 |
| 63 | Muse Spark 1.1 Meta· reasoning | 154.3 | 1.05M | $1.25 | Closed | 9 Jul 2026 |
| 64 | Gemini 3.6 Flash Google· reasoning | 154.4 | 1.05M | $0.75 | Closed | 21 Jul 2026 |
| 65 | DeepSeek V4 Flash 0731 DeepSeek· reasoning | 154.5 | 1.31M | $0.021 | Open source | 31 Jul 2026 |
| 66 | Gemini 3.5 Flash Google· reasoning | 154.6 | 1.05M | $1.50 | Closed | 19 May 2026 |
| 67 | DeepSeek V4.1 Flash DeepSeek· reasoning | 155.0 | 1.05M | $0.30 | Open source | 9 Sep 2026 |
| 68 | Muse Spark 1.2 Meta· reasoning | 155.2 | 1.05M | $1.25 | Closed | 5 Aug 2026 |
| 69 | Qwen3.8 Max (0902) Alibaba (Qwen)· reasoning | 155.3 | 1M | $2.00 | Closed | 1 Sep 2026 |
| 70 | Claude Opus 4.6 Anthropic· reasoning | 155.4 | 1M | $5.00 | Closed | 5 Feb 2026 |
| 71 | DeepSeek V4 Pro 0813 DeepSeek· reasoning | 155.4 | 1.05M | $0.40 | Open source | 13 Aug 2026 |
| 72 | GPT-5.2 Pro OpenAI· reasoning | 155.4 | 400K | $21.0 | Closed | 11 Dec 2025 |
| 73 | GLM 5.3 Z.ai (Zhipu AI)· reasoning | 155.6 | 1.31M | $0.18 | Open source | 14 Aug 2026 |
| 74 | GPT-5.6 Luna OpenAI· reasoning | 156.3 | 1.05M | $0.20 | Closed | 9 Jul 2026 |
| 75 | Claude Sonnet 5 Anthropic· reasoning | 156.3 | 1M | $2.00 | Closed | 30 Jun 2026 |
| 76 | Claude Opus 4.7 Anthropic· reasoning | 156.4 | 1M | $5.00 | Closed | 16 Apr 2026 |
| 77 | Grok 4.6 xAI· reasoning | 156.5 | 500K | $2.00 | Closed | 12 Aug 2026 |
| 78 | GPT-5.3-Codex OpenAI· reasoning | 156.8 | 400K | $1.75 | Closed | 5 Feb 2026 |
| 79 | Muse Spark 1.3 Meta· reasoning | 156.9 | 1.05M | $1.25 | Closed | 2 Sep 2026 |
| 80 | GPT-5.4 OpenAI· reasoning | 156.9 | 1.05M | $2.50 | Closed | 5 Mar 2026 |
| 81 | Gemini 3.8 Flash Google· reasoning | 157.1 | 1.05M | $0.75 | Closed | 2 Sep 2026 |
| 82 | Kimi K3 Moonshot AI· reasoning | 157.7 | 1.05M | $3.00 | Open source | 16 Jul 2026 |
| 83 | Gemini 3.7 Flash Google· reasoning | 157.7 | 1.05M | $0.75 | Closed | 13 Aug 2026 |
| 84 | Claude Opus 4.8 Anthropic· reasoning | 158.3 | 1M | $5.00 | Closed | 28 May 2026 |
| 85 | GPT-5.4 Pro OpenAI· reasoning | 159.1 | 1.05M | $30.0 | Closed | 5 Mar 2026 |
| 86 | GPT-5.5 OpenAI· reasoning | 159.3 | 1.05M | $5.00 | Closed | 23 Apr 2026 |
| 87 | GPT-5.6 Terra OpenAI· reasoning | 159.3 | 1.05M | $2.00 | Closed | 9 Jul 2026 |
| 88 | GPT-5.6 Sol OpenAI· reasoning | 162.0 | 1.05M | $2.00 | Closed | 9 Jul 2026 |
| 89 | GPT-5.5 Pro OpenAI· reasoning | 162.4 | 1.05M | $30.0 | Closed | 23 Apr 2026 |
| 90 | Claude Opus 5 Anthropic· reasoning | 162.7 | 1M | $5.00 | Closed | 24 Jul 2026 |
| 91 | Claude Fable 5 Anthropic· reasoning | 163.6 | 1M | $10.0 | Closed | 9 Jun 2026 |
| 92 | Claude Fable 5.1 Anthropic· reasoning | 165.0 | 1M | $10.0 | Closed | 1 Sep 2026 |
| 93 | GPT-6 Astra OpenAI· reasoning | 166.6 | 1.05M | $10.0 | Closed | 3 Sep 2026 |
| 94 | Claude Opus 5.5 Anthropic· reasoning | — | 1M | $4.00 | ? | 22 Sep 2026 |
| 95 | Claude Opus 5.5 (batch) Anthropic· reasoning | — | 1M | $2.00 | ? | 22 Sep 2026 |
| 96 | Claude Fable 5.1 (batch) Anthropic· reasoning | — | 1M | $5.00 | ? | 1 Sep 2026 |
| 97 | GPT-6 Astra (batch) OpenAI· reasoning | — | 1.05M | $5.00 | ? | 4 Sep 2026 |
| 98 | Claude Opus 5 (batch) Anthropic· reasoning | — | 1M | $2.50 | ? | 24 Jul 2026 |
| 99 | Claude Fable 5 (batch) Anthropic· reasoning | — | 1M | $5.00 | ? | 9 Jun 2026 |
| 100 | GPT-6 Sol OpenAI· reasoning | — | 1.05M | $2.00 | ? | 22 Sep 2026 |