Best model for your job # Best AI model for hard reasoning > For reasoning, GPT-6 Astra scores highest on the current data (87.6), weighting reasoning 70%, math 30%. The cheapest model in the top 10 is Gemini 3.7 Flash - Canonical page: https://noometry.com/best/for/reasoning - Last updated: 2026-10-10 - Title: Best AI model for hard reasoning (October 2026) | Noometry For reasoning, GPT-6 Astra scores highest on the current data (87.6), weighting reasoning 70%, math 30%. The cheapest model in the top 10 is Gemini 3.7 Flash at $0.75 / $3.75 per million tokens. Last verified October 10, 2026 Weights: [Reasoning](https://noometry.com/best/reasoning) 70%, [Math](https://noometry.com/best/math) 30%. Novel problem solving is measured best by abstraction puzzles and math. Best AI model for hard reasoning | # | Model | Provider | Fit | Reasoning | Math | Input $/M | Output $/M | | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | [GPT-6 Astra](https://noometry.com/models/gpt-6-astra) | OpenAI | **87.6** | 85.1 | 93.4 | $10 | $50 | | 2 | [Claude Opus 5.5](https://noometry.com/models/claude-opus-5-5) | Anthropic | **83.4** | 79.5 | 92.4 | $4 | $20 | | 3 | [Claude Fable 5.1](https://noometry.com/models/claude-fable-5-1) | Anthropic | **80.5** | 76.7 | 89.5 | $10 | $50 | | 4 | [Claude Fable 5](https://noometry.com/models/claude-fable-5) | Anthropic | **80.2** | 76.8 | 88.4 | $10 | $50 | | 5 | [Claude Opus 5](https://noometry.com/models/claude-opus-5) | Anthropic | **79.8** | 77.1 | 86.1 | $5 | $25 | | 6 | [GPT-5.6 Sol](https://noometry.com/models/gpt-5-6-sol) | OpenAI | **77.9** | 74.7 | 85.5 | $4 | $20 | | 7 | [GPT-5.5 Pro](https://noometry.com/models/gpt-5-5-pro) | OpenAI | **76.6** | 73.6 | 83.8 | $30 | $180 | | 8 | [GPT-5.5](https://noometry.com/models/gpt-5-5) | OpenAI | **75.3** | 72.7 | 81.5 | $5 | $30 | | 9 | [GPT-5.4 Pro](https://noometry.com/models/gpt-5-4-pro) | OpenAI | **71.3** | 71.0 | 72.0 | $30 | $180 | | 10 | [Gemini 3.7 Flash](https://noometry.com/models/gemini-3-7-flash) | Google | **69.9** | 70.1 | 69.5 | $0.75 | $3.75 | | 11 | [Gemini 3.1 Pro Preview](https://noometry.com/models/gemini-3-1-pro-preview) | Google | **68.7** | 71.7 | 61.8 | $2 | $12 | | 12 | [Claude Opus 4.8](https://noometry.com/models/claude-opus-4-8) | Anthropic | **68.7** | 64.6 | 78.2 | $5 | $25 | | 13 | [GPT-5.6 Terra](https://noometry.com/models/gpt-5-6-terra) | OpenAI | **66.8** | 60.6 | 81.5 | $2 | $12 | | 14 | [Kimi K3](https://noometry.com/models/kimi-k3) (open weights) | Moonshot AI | **66.3** | 63.0 | 74.0 | $3 | $15 | | 15 | [GPT-5.4](https://noometry.com/models/gpt-5-4) | OpenAI | **65.2** | 61.7 | 73.3 | $2.50 | $15 | | 16 | [Gemini 3.8 Flash](https://noometry.com/models/gemini-3-8-flash) | Google | **64.8** | 64.7 | 65.2 | $0.75 | $3.75 | | 17 | [Claude Sonnet 5.5](https://noometry.com/models/claude-sonnet-5-5) | Anthropic | **63.3** | 52.4 | 88.7 | $2 | $10 | | 18 | [Grok 4.6](https://noometry.com/models/grok-4-6) | xAI | **63.0** | 61.3 | 66.8 | $2 | $6 | | 19 | [Gemini 3.5 Flash](https://noometry.com/models/gemini-3-5-flash) | Google | **62.0** | 62.7 | 60.5 | $1.50 | $9 | | 20 | [Qwen3.8 Max](https://noometry.com/models/qwen3-8-max) | Alibaba (Qwen) | **59.3** | 53.4 | 73.1 | $2 | $6 | | 21 | [Claude Opus 4.6](https://noometry.com/models/claude-opus-4-6) | Anthropic | **59.2** | 57.7 | 62.7 | $5 | $25 | | 22 | [DeepSeek V4 Pro](https://noometry.com/models/deepseek-v4-pro) (open weights) | DeepSeek | **58.8** | 56.4 | 64.6 | $0.43 | $0.87 | | 23 | [Muse Spark 1.3](https://noometry.com/models/muse-spark-1-3) | Meta | **58.8** | 52.9 | 72.4 | $1.25 | $4.25 | | 24 | [Gemini 3.6 Flash](https://noometry.com/models/gemini-3-6-flash) | Google | **58.3** | 58.9 | 57.0 | $0.75 | $3.75 | | 25 | [Claude Opus 4.7](https://noometry.com/models/claude-opus-4-7) | Anthropic | **57.5** | 53.7 | 66.5 | $5 | $25 | Sponsored placements are available on pages like this one. [Advertise on Noometry](https://noometry.com/advertise) Top two head to head: [GPT-6 Astra vs Claude Opus 5.5](https://noometry.com/compare/claude-opus-5-5-vs-gpt-6-astra) ## Frequently asked questions ### What is the best ai model for hard reasoning? For reasoning, GPT-6 Astra scores highest on the current data (87.6), weighting reasoning 70%, math 30%. The cheapest model in the top 10 is Gemini 3.7 Flash at $0.75 / $3.75 per million tokens. ### How is this shortlist built? Novel problem solving is measured best by abstraction puzzles and math. 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(2026). Best AI model for hard reasoning. Retrieved October 10, 2026, from https://noometry.com/best/for/reasoning Quote Noometry with a link back to this page. It is also available in [Markdown](https://noometry.com/md/best/for/reasoning.md).