DeepSeek V4.1 Flash vs GPT-6 Sol
DeepSeek V4.1 Flash 
GPT-6 Sol Verdict
- GPT-6 Sol (max) leads on quality: 67.7 vs 61.2.
- DeepSeek V4.1 Flash (max) is stronger in agents & tools, coding, long context.
- GPT-6 Sol (max) is stronger in composite, knowledge, multimodal, reasoning.
- DeepSeek V4.1 Flash (max) is 15× cheaper ($0.262 vs $4.00 per 1M blended).
- DeepSeek V4.1 Flash (max) streams 1.8× faster (227 vs 126 tokens per second).
| Metric | DeepSeek V4.1 Flash (max) | GPT-6 Sol (max) |
|---|---|---|
| BenchLeader Index | 61.2 | 67.7 |
| Agents & tools score | 59.6 | – |
| Coding score | 65.7 | – |
| Composite score | 73.0 | 86.2 |
| Knowledge score | 60.4 | 75.4 |
| Long context score | 67.9 | 67.7 |
| Multimodal score | 60.6 | 67.1 |
| Reasoning score | 66.9 | 95.0 |
| Blended price $/M | $0.262 | $4.00 |
| Output speed | 227 tok/s | 126 tok/s |
| Time to first answer | 9.9 s | 107.2 s |
| Context window | 1M | 1.1M |
| SciCode | 51.9% | – |
| LMArena WebDev | 1614 | – |
| LMArena Agent | 4.9 | – |
| LiveBench | 81.1% | – |
| LiveBench Reasoning | 86.7% | – |
| LiveBench Coding | 80.0% | – |
| LiveBench Agentic Coding | 77.3% | – |
| LiveBench Mathematics | 93.3% | – |
| LiveBench Data Analysis | 79.3% | – |
| LiveBench Language | 81.2% | – |
| LiveBench Instruction Following | 70.0% | – |
| AA Intelligence Index | 39.5 | 47.5 |
| AA-LCR | 84.0% | 83.7% |
| MMMU-Pro | 77.0% | 83.3% |
| AA-Omniscience | -5.3 | 27.1 |
| Humanity's Last Exam (AA) | 39.3% | 47.9% |
| SciCode (AA) | 51.9% | 57.6% |
| CritPt | 14.3% | 30.9% |
| GDPval (AA) | 55.0% | 49.4% |
| ALE-Bench | 1092.3 | – |
| Terminal-Bench 4.0 (AA) | 26.8% | 43.9% |
| AutomationBench | 68.9% | 61.6% |
| GDP.pdf | 12.8% | 24.8% |
| MLCR | 22.8% | 16.1% |
| AA-Omniscience: accuracy | 46.4% | 54.5% |
| AA-Omniscience: non-hallucination | 3.5% | 39.9% |
| AA-Briefcase | 1432 | 1483 |
| AA Openness Index | 44.4 | – |
Data as of 2026-09-23. Best configuration of each model; every score links to its source on the model pages.
DeepSeek V4.1 Flash vs GPT-6 Sol: questions
- Is DeepSeek V4.1 Flash better than GPT-6 Sol?
- GPT-6 Sol (max) leads on quality: 67.7 vs 61.2. The BenchLeader Index combines every independent quality benchmark; GPT-6 Sol (max) is ahead overall as of 2026-09-23, but check the category scores for your use.
- Which is cheaper, DeepSeek V4.1 Flash or GPT-6 Sol?
- DeepSeek V4.1 Flash is cheaper: $0.262 against $4.00 per million tokens, blended at three input tokens per output token.
- Which is faster, DeepSeek V4.1 Flash or GPT-6 Sol?
- DeepSeek V4.1 Flash streams faster: 227 against 126 output tokens per second.
- Which has the larger context window?
- GPT-6 Sol accepts more context: 1.1M against 1M tokens.