Compare · ModelsLive · 2 picked · head to head
DeepSeek V4.1 Flash 1017 vs GPT-5.6 Sol
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-5.6 Sol wins on 10/11 benchmarks
GPT-5.6 Sol wins 10 of 11 shared benchmarks. Leads in reasoning · knowledge · math.
Category leads
agentic·DeepSeek V4.1 Flash 1017reasoning·GPT-5.6 Solknowledge·GPT-5.6 Solmath·GPT-5.6 Solgeneral·GPT-5.6 Sol
Hype vs Reality
Attention vs performance
DeepSeek V4.1 Flash 1017
#41 by perf·#4 by attention
GPT-5.6 Sol
#36 by perf·#9 by attention
Best value
DeepSeek V4.1 Flash 1017
46.5x better value than GPT-5.6 Sol
DeepSeek V4.1 Flash 1017
254.9 pts/$
$0.25/M
GPT-5.6 Sol
5.5 pts/$
$12.00/M
Vendor risk
Mixed exposure
One or more vendors flagged
DeepSeek
$3.4B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
11 benchmarks · 2 models
DeepSeek V4.1 Flash 1017GPT-5.6 Sol
APEX-Agents
DeepSeek V4.1 Flash 1017 leads by +18.4
APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments.
DeepSeek V4.1 Flash 1017
69.8
GPT-5.6 Sol
51.4
ARC-AGI
GPT-5.6 Sol leads by +3.0
ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization.
DeepSeek V4.1 Flash 1017
94.5
GPT-5.6 Sol
97.5
ARC-AGI-2
GPT-5.6 Sol leads by +14.4
ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data.
DeepSeek V4.1 Flash 1017
78.1
GPT-5.6 Sol
92.5
Chess Puzzles
GPT-5.6 Sol leads by +23.1
Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities.
DeepSeek V4.1 Flash 1017
43.2
GPT-5.6 Sol
66.3
FrontierMath-Tier-4-v2-Private
GPT-5.6 Sol leads by +36.6
DeepSeek V4.1 Flash 1017
46.3
GPT-5.6 Sol
82.9
FrontierMath-Tiers-1-3-v2-Private
GPT-5.6 Sol leads by +18.8
DeepSeek V4.1 Flash 1017
75.0
GPT-5.6 Sol
93.8
GPQA diamond
GPT-5.6 Sol leads by +0.4
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
DeepSeek V4.1 Flash 1017
94.7
GPT-5.6 Sol
95.1
Mystery Game Puzzles
GPT-5.6 Sol leads by +9.9
DeepSeek V4.1 Flash 1017
43.8
GPT-5.6 Sol
53.7
OTIS Mock AIME 2024-2025
GPT-5.6 Sol leads by +0.6
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
DeepSeek V4.1 Flash 1017
99.4
GPT-5.6 Sol
100.0
SimpleQA Verified
GPT-5.6 Sol leads by +27.2
SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.
DeepSeek V4.1 Flash 1017
42.5
GPT-5.6 Sol
69.7
WeirdML v3
GPT-5.6 Sol leads by +1.7
DeepSeek V4.1 Flash 1017
22.1
GPT-5.6 Sol
23.8
Full benchmark table
| Benchmark | DeepSeek V4.1 Flash 1017 | GPT-5.6 Sol |
|---|---|---|
APEX-Agents APEX-Agents · evaluates AI agents on complex, multi-step tasks requiring planning, tool use, and autonomous decision-making in realistic environments. | 69.8 | 51.4 |
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 94.5 | 97.5 |
ARC-AGI-2 ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data. | 78.1 | 92.5 |
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 43.2 | 66.3 |
FrontierMath-Tier-4-v2-Private | 46.3 | 82.9 |
FrontierMath-Tiers-1-3-v2-Private | 75.0 | 93.8 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 94.7 | 95.1 |
Mystery Game Puzzles | 43.8 | 53.7 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 99.4 | 100.0 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 42.5 | 69.7 |
WeirdML v3 | 22.1 | 23.8 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $0.01 | $0.50 | 1.0M tokens (~524 books) | $1.29 | |
| $4.00 | $20.00 | 1.1M tokens (~525 books) | $80.00 |
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