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DeepSeek-V3.1 vs GPT-5.6 Sol
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| Attribute | DeepSeek-V3.1 | GPT-5.6 Sol |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 139 | 162 |
| Coding | 14 | 95 |
| Math | 3 | 97 |
| Reasoning & Knowledge | 16 | 95 |
| Agentic & Tools | 10 | 66 |
| Specifications | ||
| Developer | DeepSeek | OpenAI |
| Family | DeepSeek | GPT |
| Released | Aug 21, 2025 | Jul 9, 2026 |
| Parameters | — | — |
| Availability | Open weights (unrestricted) | API access |
| Context window | — | 1.1M |
| Price — $/M input | — | $5.00 |
| Price — $/M output | — | $30.00 |
| Inputs | — | file, image, text |
| Outputs | — | text |
| Benchmarks | ||
| AIME 2024/2025 | 50% | 100% |
| GPQA Diamond | 74% | 93% |
| Humanity's Last Exam | 6% | 47% |
| LiveCodeBench | 58% | — |
| MMLU-Pro | 83% | — |
| SciCode | 37% | 56% |
| SimpleBench | 40% | 72% |
| WeirdML | 38% | 89% |
| τ²-bench | 35% | 85% |
| APEX | — | 40% |
| ARC-AGI | — | 98% |
| ARC-AGI-2 | — | 93% |
| SimpleQA Verified | — | 72% |
| WebDev Arena | — | 1620 |
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.