DeepSeek-V4.1-Flash-1017 vs GPT-6.1 Sol
A direct, empirical evaluation of DeepSeek-V4.1-Flash-1017 (DeepSeek) against GPT-6.1 Sol (OpenAI).
DeepSeek-V4.1-Flash-1017
Developed by DeepSeek · Open-Weight Distilled Transformer (MIT License) parameters
Top-tier open-weight coding (81.6% SWE-bench Verified), concise reasoning traces with 32% lower token bloat, and fast consumer GPU self-hosting.
GPT-6.1 Sol
Developed by OpenAI · Proprietary Frontier Workhorse Engine parameters
Near-Astra reasoning at 1/5th price ($1.25/$5.00), SWE-bench Verified 74.8%, OSWorld 2.0 desktop agent automation, and sub-80ms Ultrafast Mode.
| Metric | DeepSeek-V4.1-Flash-1017 | GPT-6.1 Sol |
|---|---|---|
| SWE-bench Verified | 81.6% | 74.8% |
| MMLU-Pro | 92.8% | 92.4% |
| MATH-500 | 94.8% | 96.2% |
| Context Window | 128,000 tokens | 1,000,000 tokens |
| Input Pricing (per 1M) | $0.14 | $1.25 |
| Output Pricing (per 1M) | $0.28 | $5.00 |
Architectural & Practical Deployment Analysis
Evaluating DeepSeek-V4.1-Flash-1017 (DeepSeek) alongside GPT-6.1 Sol (OpenAI) highlights key technical trade-offs across neural parameter scale and compute efficiency. DeepSeek-V4.1-Flash-1017 executes across Open-Weight Distilled Transformer (MIT License) total parameters with Multi-Head Latent Attention (MLA) Core active per token, whereas GPT-6.1 Sol operates on Proprietary Frontier Workhorse Engine parameters with Dynamic Speculative MoE Core on NVIDIA GB200 active per token.
On SWE-bench Verified software engineering tasks, DeepSeek-V4.1-Flash-1017 achieves 81.6% autonomous resolution rate, compared to 74.8% for GPT-6.1 Sol. On complex reasoning benchmarks, DeepSeek-V4.1-Flash-1017 posts 92.8% on MMLU-Pro and 94.8% on MATH-500, against 92.4% and 96.2% respectively for GPT-6.1 Sol.
From an operational economics perspective, processing 10,000,000 mixed tokens (7M input / 3M output) costs approximately $1.82 on DeepSeek-V4.1-Flash-1017 versus $23.75 on GPT-6.1 Sol.
Recommendation: Deploy DeepSeek-V4.1-Flash-1017 when your infrastructure prioritizes top-tier open-weight coding (81.6% swe-bench verified), concise reasoning traces with 32% lower token bloat, and fast consumer gpu self-hosting.. Deploy GPT-6.1 Sol when workload requirements favor near-astra reasoning at 1/5th price ($1.25/$5.00), swe-bench verified 74.8%, osworld 2.0 desktop agent automation, and sub-80ms ultrafast mode..