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GPT-5.6 Sol vs GPT-5 nano
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| Attribute | GPT-5.6 Sol | GPT-5 nano |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 162 | 141 |
| Coding | 95 | 25 |
| Math | 97 | 12 |
| Reasoning & Knowledge | 95 | 7 |
| Agentic & Tools | 66 | 9 |
| Specifications | ||
| Developer | OpenAI | OpenAI |
| Family | GPT | GPT |
| Released | Jul 9, 2026 | Aug 7, 2025 |
| Parameters | — | — |
| Availability | API access | API access |
| Context window | 1.1M | 400K |
| Price — $/M input | $5.00 | $0.05 |
| Price — $/M output | $30.00 | $0.40 |
| Inputs | file, image, text | text, image, file |
| Outputs | text | text |
| Benchmarks | ||
| AIME 2024/2025 | 100% | 81% |
| APEX | 40% | — |
| ARC-AGI | 98% | 21% |
| ARC-AGI-2 | 93% | 3% |
| GPQA Diamond | 93% | 69% |
| Humanity's Last Exam | 47% | 8% |
| SciCode | 56% | 37% |
| SimpleBench | 72% | — |
| SimpleQA Verified | 72% | 12% |
| WebDev Arena | 1620 | — |
| WeirdML | 89% | 38% |
| τ²-bench | 85% | 37% |
| FrontierMath | — | 8% |
| FrontierMath Tier 4 | — | 2% |
| LiveCodeBench | — | 79% |
| MATH Level 5 | — | 95% |
| MMLU-Pro | — | 78% |
| Terminal-Bench | — | 22% |
Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.