Compare · ModelsLive · 2 picked · head to head
Grok 4 vs o3 Pro
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
o3 Pro wins on 4/6 benchmarks
o3 Pro wins 4 of 6 shared benchmarks. Leads in coding · knowledge.
Category leads
coding·o3 Proreasoning·Grok 4knowledge·o3 Pro
Hype vs Reality
Attention vs performance
Grok 4
#87 by perf·#15 by attention
o3 Pro
#42 by perf·no signal
Vendor risk
Who is behind the model
xAI
$250.0B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
6 benchmarks · 2 models
Grok 4o3 Pro
Aider polyglot
o3 Pro leads by +5.3
Aider Polyglot · measures how well AI models can edit code across multiple programming languages using the Aider coding assistant framework.
Grok 4
79.6
o3 Pro
84.9
ARC-AGI
Grok 4 leads by +7.3
ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization.
Grok 4
66.7
o3 Pro
59.3
ARC-AGI-2
Grok 4 leads by +11.1
ARC-AGI-2 · the second iteration of the Abstraction and Reasoning Corpus, testing novel pattern recognition and abstract reasoning without prior training data.
Grok 4
16.0
o3 Pro
4.9
Fiction.LiveBench
o3 Pro leads by +2.8
Fiction.LiveBench · a continuously updated benchmark using recently published fiction to test reading comprehension and reasoning, preventing data contamination.
Grok 4
94.4
o3 Pro
97.2
Lech Mazur Writing
o3 Pro leads by +7.5
Lech Mazur Writing · evaluates creative writing ability, assessing prose quality, narrative coherence, and stylistic sophistication.
Grok 4
76.9
o3 Pro
84.4
WeirdML
o3 Pro leads by +12.5
WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns.
Grok 4
45.7
o3 Pro
58.2
Full benchmark table
| Benchmark | Grok 4 | o3 Pro |
|---|---|---|
Aider polyglot Aider Polyglot · measures how well AI models can edit code across multiple programming languages using the Aider coding assistant framework. | 79.6 | 84.9 |
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 66.7 | 59.3 |
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. | 16.0 | 4.9 |
Fiction.LiveBench Fiction.LiveBench · a continuously updated benchmark using recently published fiction to test reading comprehension and reasoning, preventing data contamination. | 94.4 | 97.2 |
Lech Mazur Writing Lech Mazur Writing · evaluates creative writing ability, assessing prose quality, narrative coherence, and stylistic sophistication. | 76.9 | 84.4 |
WeirdML WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns. | 45.7 | 58.2 |
Pricing · per 1M tokens · projected $/mo at 10M tokens