Compare · ModelsLive · 2 picked · head to head
Claude 3.5 Sonnet vs o1
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
o1 wins on 9/11 benchmarks
o1 wins 9 of 11 shared benchmarks. Leads in coding · math · knowledge.
Category leads
coding·o1math·o1knowledge·o1reasoning·o1
Hype vs Reality
Attention vs performance
Claude 3.5 Sonnet
#127 by perf·no signal
o1
#57 by perf·no signal
Vendor risk
Who is behind the model
Anthropic
$380.0B·Tier 1
OpenAI
$840.0B·Tier 1
Head to head
11 benchmarks · 2 models
Claude 3.5 Sonneto1
Aider · Code Editing
Claude 3.5 Sonnet
84.2
o1
84.2
Aider polyglot
o1 leads by +10.1
Aider Polyglot · measures how well AI models can edit code across multiple programming languages using the Aider coding assistant framework.
Claude 3.5 Sonnet
51.6
o1
61.7
CadEval
o1 leads by +8.0
CadEval · evaluates the ability to generate and reason about Computer-Aided Design code, testing spatial reasoning and engineering knowledge.
Claude 3.5 Sonnet
48.0
o1
56.0
FrontierMath-2025-02-28-Private
o1 leads by +8.3
FrontierMath (Feb 2025) · original research-level math problems created by mathematicians, testing capabilities at the boundary of current AI mathematical reasoning.
Claude 3.5 Sonnet
1.0
o1
9.3
GeoBench
o1 leads by +18.0
GeoBench · tests geographic knowledge and spatial reasoning across countries, landmarks, coordinates, and geopolitical understanding.
Claude 3.5 Sonnet
62.0
o1
80.0
GPQA diamond
o1 leads by +30.3
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
Claude 3.5 Sonnet
38.7
o1
69.0
Lech Mazur Writing
Claude 3.5 Sonnet leads by +10.1
Lech Mazur Writing · evaluates creative writing ability, assessing prose quality, narrative coherence, and stylistic sophistication.
Claude 3.5 Sonnet
80.3
o1
70.2
MATH level 5
o1 leads by +43.0
MATH Level 5 · the hardest tier of the MATH benchmark, featuring competition-level problems from AMC, AIME, and Olympiad-style mathematics.
Claude 3.5 Sonnet
51.7
o1
94.7
OTIS Mock AIME 2024-2025
o1 leads by +66.9
OTIS Mock AIME 2024–2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
Claude 3.5 Sonnet
6.4
o1
73.3
SimpleBench
o1 leads by +15.1
SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking.
Claude 3.5 Sonnet
13.0
o1
28.1
WeirdML
o1 leads by +12.9
WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns.
Claude 3.5 Sonnet
31.0
o1
43.8
Full benchmark table
| Benchmark | Claude 3.5 Sonnet | o1 |
|---|---|---|
Aider · Code Editing | 84.2 | 84.2 |
Aider polyglot Aider Polyglot · measures how well AI models can edit code across multiple programming languages using the Aider coding assistant framework. | 51.6 | 61.7 |
CadEval CadEval · evaluates the ability to generate and reason about Computer-Aided Design code, testing spatial reasoning and engineering knowledge. | 48.0 | 56.0 |
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. | 1.0 | 9.3 |
GeoBench GeoBench · tests geographic knowledge and spatial reasoning across countries, landmarks, coordinates, and geopolitical understanding. | 62.0 | 80.0 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 38.7 | 69.0 |
Lech Mazur Writing Lech Mazur Writing · evaluates creative writing ability, assessing prose quality, narrative coherence, and stylistic sophistication. | 80.3 | 70.2 |
MATH level 5 MATH Level 5 · the hardest tier of the MATH benchmark, featuring competition-level problems from AMC, AIME, and Olympiad-style mathematics. | 51.7 | 94.7 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024–2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 6.4 | 73.3 |
SimpleBench SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking. | 13.0 | 28.1 |
WeirdML WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns. | 31.0 | 43.8 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| Claude 3.5 Sonnet | — | — | — | — |
| o1 | $15.00 | $60.00 | 200K tokens (~100 books) | $262.50 |