Compare · ModelsLive · 2 picked · head to head
GPT-5.1 vs GPT-5.4 Pro
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
GPT-5.4 Pro wins on 7/10 benchmarks
GPT-5.4 Pro wins 7 of 10 shared benchmarks. Leads in reasoning · knowledge.
Category leads
reasoning·GPT-5.4 Proknowledge·GPT-5.4 Promath·GPT-5.1coding·GPT-5.1
Hype vs Reality
Attention vs performance
GPT-5.1
#138 by perf·#4 by attention
GPT-5.4 Pro
#37 by perf·#4 by attention
Best value
GPT-5.1
14.0x better value than GPT-5.4 Pro
GPT-5.1
8.6 pts/$
$5.63/M
GPT-5.4 Pro
0.6 pts/$
$105.00/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
10 benchmarks · 2 models
GPT-5.1GPT-5.4 Pro
ARC-AGI
GPT-5.4 Pro leads by +21.7
ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization.
GPT-5.1
72.8
GPT-5.4 Pro
94.5
ARC-AGI-2
GPT-5.4 Pro leads by +65.7
ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data.
GPT-5.1
17.6
GPT-5.4 Pro
83.3
Chess Puzzles
GPT-5.4 Pro leads by +28.0
Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities.
GPT-5.1
28.4
GPT-5.4 Pro
56.4
FrontierMath-2025-02-28-Private
GPT-5.1 leads by +4.5
FrontierMath (Feb 2025) · original research-level math problems created by mathematicians, testing capabilities at the boundary of current AI mathematical reasoning.
GPT-5.1
54.5
GPT-5.4 Pro
50.0
FrontierMath-Tier-4-2025-07-01-Private
GPT-5.4 Pro leads by +16.7
FrontierMath Tier 4 (Jul 2025) · the most challenging tier of frontier mathematics, containing problems that push the absolute limits of AI mathematical reasoning.
GPT-5.1
20.8
GPT-5.4 Pro
37.5
GPQA diamond
GPT-5.4 Pro leads by +9.3
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
GPT-5.1
83.5
GPT-5.4 Pro
92.8
HLE
GPT-5.4 Pro leads by +21.7
HLE (Humanity's Last Exam) · a reasoning benchmark designed to be the hardest public evaluation of AI. Questions span mathematics, physics, philosophy, and logic · curated to be at or beyond the frontier of human expert capability. Tested with and without tool augmentation. Claude Opus 4.7 scores 46.9% without tools and 54.7% with tools · making it one of the few benchmarks where the top score is below 60%.
GPT-5.1
19.8
GPT-5.4 Pro
41.5
SimpleBench
GPT-5.4 Pro leads by +25.1
SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking.
GPT-5.1
43.8
GPT-5.4 Pro
68.9
SimpleQA Verified
GPT-5.1 leads by +1.7
SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.
GPT-5.1
48.0
GPT-5.4 Pro
46.3
WeirdML
GPT-5.1 leads by +3.3
WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns.
GPT-5.1
60.8
GPT-5.4 Pro
57.4
Full benchmark table
| Benchmark | GPT-5.1 | GPT-5.4 Pro |
|---|---|---|
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 72.8 | 94.5 |
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. | 17.6 | 83.3 |
Chess Puzzles Chess Puzzles · tests strategic and tactical reasoning by having models solve chess puzzle positions, evaluating lookahead and pattern recognition abilities. | 28.4 | 56.4 |
FrontierMath-2025-02-28-Private FrontierMath (Feb 2025) · original research-level math problems created by mathematicians, testing capabilities at the boundary of current AI mathematical reasoning. | 54.5 | 50.0 |
FrontierMath-Tier-4-2025-07-01-Private FrontierMath Tier 4 (Jul 2025) · the most challenging tier of frontier mathematics, containing problems that push the absolute limits of AI mathematical reasoning. | 20.8 | 37.5 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 83.5 | 92.8 |
HLE HLE (Humanity's Last Exam) · a reasoning benchmark designed to be the hardest public evaluation of AI. Questions span mathematics, physics, philosophy, and logic · curated to be at or beyond the frontier of human expert capability. Tested with and without tool augmentation. Claude Opus 4.7 scores 46.9% without tools and 54.7% with tools · making it one of the few benchmarks where the top score is below 60%. | 19.8 | 41.5 |
SimpleBench SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking. | 43.8 | 68.9 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 48.0 | 46.3 |
WeirdML WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns. | 60.8 | 57.4 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $1.25 | $10.00 | 400K tokens (~200 books) | $34.38 | |
| $30.00 | $180.00 | 1.1M tokens (~525 books) | $675.00 |