Compare · ModelsLive · 2 picked · head to head
DeepSeek V4.1 Flash 1017 vs GPT-5.6 Terra
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-5.6 Terra wins on 8/10 benchmarks
GPT-5.6 Terra wins 8 of 10 shared benchmarks. Leads in reasoning · knowledge · math.
Category leads
agentic·DeepSeek V4.1 Flash 1017reasoning·GPT-5.6 Terraknowledge·GPT-5.6 Terramath·GPT-5.6 Terrageneral·DeepSeek V4.1 Flash 1017
Hype vs Reality
Attention vs performance
DeepSeek V4.1 Flash 1017
#41 by perf·#4 by attention
GPT-5.6 Terra
#37 by perf·#9 by attention
Best value
DeepSeek V4.1 Flash 1017
27.2x better value than GPT-5.6 Terra
DeepSeek V4.1 Flash 1017
254.9 pts/$
$0.25/M
GPT-5.6 Terra
9.4 pts/$
$7.00/M
Vendor risk
Mixed exposure
One or more vendors flagged
DeepSeek
$3.4B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
10 benchmarks · 2 models
DeepSeek V4.1 Flash 1017GPT-5.6 Terra
APEX-Agents
DeepSeek V4.1 Flash 1017 leads by +11.6
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 Terra
58.2
ARC-AGI
GPT-5.6 Terra leads by +2.0
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 Terra
96.5
ARC-AGI-2
GPT-5.6 Terra leads by +5.8
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 Terra
83.9
Chess Puzzles
GPT-5.6 Terra leads by +1.0
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 Terra
44.2
FrontierMath-Tier-4-v2-Private
GPT-5.6 Terra leads by +24.4
DeepSeek V4.1 Flash 1017
46.3
GPT-5.6 Terra
70.7
FrontierMath-Tiers-1-3-v2-Private
GPT-5.6 Terra leads by +15.5
DeepSeek V4.1 Flash 1017
75.0
GPT-5.6 Terra
90.5
GPQA diamond
GPT-5.6 Terra leads by +0.2
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 Terra
94.9
Mystery Game Puzzles
DeepSeek V4.1 Flash 1017 leads by +15.4
DeepSeek V4.1 Flash 1017
43.8
GPT-5.6 Terra
28.4
OTIS Mock AIME 2024-2025
GPT-5.6 Terra leads by +0.3
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 Terra
99.7
SimpleQA Verified
GPT-5.6 Terra leads by +0.7
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 Terra
43.2
Full benchmark table
| Benchmark | DeepSeek V4.1 Flash 1017 | GPT-5.6 Terra |
|---|---|---|
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 | 58.2 |
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 94.5 | 96.5 |
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 | 83.9 |
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 43.2 | 44.2 |
FrontierMath-Tier-4-v2-Private | 46.3 | 70.7 |
FrontierMath-Tiers-1-3-v2-Private | 75.0 | 90.5 |
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 | 94.9 |
Mystery Game Puzzles | 43.8 | 28.4 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 99.4 | 99.7 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 42.5 | 43.2 |
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 | |
| $2.00 | $12.00 | 1.1M tokens (~525 books) | $45.00 |
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