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DeepSeek-V4-Flash vs GPT-5.6 Sol
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| Attribute | DeepSeek-V4-Flash | GPT-5.6 Sol |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | — | 162 |
| Coding | 75 | 95 |
| Math | — | 97 |
| Reasoning & Knowledge | 56 | 95 |
| Agentic & Tools | 81 | 66 |
| Specifications | ||
| Developer | DeepSeek | OpenAI |
| Family | DeepSeek | GPT |
| Released | Apr 24, 2026 | Jul 9, 2026 |
| Parameters | 284B | — |
| Availability | Open weights (unrestricted) | API access |
| Context window | 1M | 1.1M |
| Price — $/M input | $0.13 | $5.00 |
| Price — $/M output | $0.28 | $30.00 |
| Inputs | text | file, image, text |
| Outputs | text | text |
| Benchmarks | ||
| GPQA Diamond | 89% | 93% |
| Humanity's Last Exam | 32% | 47% |
| SciCode | 45% | 56% |
| WebDev Arena | 1577 | 1620 |
| WeirdML | 46% | 89% |
| τ²-bench | 95% | 85% |
| AIME 2024/2025 | — | 100% |
| APEX | — | 40% |
| ARC-AGI | — | 98% |
| ARC-AGI-2 | — | 93% |
| SimpleBench | — | 72% |
| SimpleQA Verified | — | 72% |
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.