Compare · ModelsLive · 2 picked · head to head
o3 Pro vs Gemini 2.5 Pro
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
o3 Pro wins on 6/6 benchmarks
o3 Pro wins 6 of 6 shared benchmarks. Leads in coding · reasoning · knowledge.
Category leads
coding·o3 Proreasoning·o3 Proknowledge·o3 Pro
Hype vs Reality
Attention vs performance
o3 Pro
#33 by perf·no signal
Gemini 2.5 Pro
#59 by perf·no signal
Best value
Gemini 2.5 Pro
8.2x better value than o3 Pro
o3 Pro
1.2 pts/$
$50.00/M
Gemini 2.5 Pro
10.0 pts/$
$5.63/M
Vendor risk
Who is behind the model
OpenAI
$840.0B·Tier 1
Google DeepMind
$4.00T·Tier 1
Head to head
6 benchmarks · 2 models
o3 ProGemini 2.5 Pro
Aider polyglot
o3 Pro leads by +1.8
Aider Polyglot · measures how well AI models can edit code across multiple programming languages using the Aider coding assistant framework.
o3 Pro
84.9
Gemini 2.5 Pro
83.1
ARC-AGI
o3 Pro leads by +18.3
ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization.
o3 Pro
59.3
Gemini 2.5 Pro
41.0
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.
o3 Pro
4.9
Gemini 2.5 Pro
4.9
Fiction.LiveBench
o3 Pro leads by +5.5
Fiction.LiveBench · a continuously updated benchmark using recently published fiction to test reading comprehension and reasoning, preventing data contamination.
o3 Pro
97.2
Gemini 2.5 Pro
91.7
Lech Mazur Writing
o3 Pro leads by +0.3
Lech Mazur Writing · evaluates creative writing ability, assessing prose quality, narrative coherence, and stylistic sophistication.
o3 Pro
86.3
Gemini 2.5 Pro
86.0
WeirdML
o3 Pro leads by +4.2
WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns.
o3 Pro
58.2
Gemini 2.5 Pro
54.0
Full benchmark table
| Benchmark | o3 Pro | Gemini 2.5 Pro |
|---|---|---|
Aider polyglot Aider Polyglot · measures how well AI models can edit code across multiple programming languages using the Aider coding assistant framework. | 84.9 | 83.1 |
ARC-AGI ARC-AGI · the original Abstraction and Reasoning Corpus, testing whether AI can solve novel visual pattern recognition tasks without memorization. | 59.3 | 41.0 |
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. | 4.9 | 4.9 |
Fiction.LiveBench Fiction.LiveBench · a continuously updated benchmark using recently published fiction to test reading comprehension and reasoning, preventing data contamination. | 97.2 | 91.7 |
Lech Mazur Writing Lech Mazur Writing · evaluates creative writing ability, assessing prose quality, narrative coherence, and stylistic sophistication. | 86.3 | 86.0 |
WeirdML WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns. | 58.2 | 54.0 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| o3 Pro | $20.00 | $80.00 | 200K tokens (~100 books) | $350.00 |
| Gemini 2.5 Pro | $1.25 | $10.00 | 1.0M tokens (~524 books) | $34.38 |