Compare · ModelsLive · 2 picked · head to head
o3 vs DeepSeek V3
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
o3 wins on 14/14 benchmarks
o3 wins 14 of 14 shared benchmarks. Leads in coding · knowledge · math.
Category leads
coding·o3knowledge·o3math·o3language·o3reasoning·o3
Hype vs Reality
Attention vs performance
o3
#69 by perf·no signal
DeepSeek V3
#45 by perf·no signal
Best value
DeepSeek V3
8.8x better value than o3
o3
11.0 pts/$
$5.00/M
DeepSeek V3
97.5 pts/$
$0.60/M
Vendor risk
Mixed exposure
One or more vendors flagged
OpenAI
$840.0B·Tier 1
DeepSeek
$3.4B·Tier 1
Head to head
14 benchmarks · 2 models
o3DeepSeek V3
Aider polyglot
o3 leads by +32.9
Aider Polyglot · measures how well AI models can edit code across multiple programming languages using the Aider coding assistant framework.
o3
81.3
DeepSeek V3
48.4
Fiction.LiveBench
o3 leads by +38.9
Fiction.LiveBench · a continuously updated benchmark using recently published fiction to test reading comprehension and reasoning, preventing data contamination.
o3
88.9
DeepSeek V3
50.0
FrontierMath-2025-02-28-Private
o3 leads by +17.0
FrontierMath (Feb 2025) · original research-level math problems created by mathematicians, testing capabilities at the boundary of current AI mathematical reasoning.
o3
18.7
DeepSeek V3
1.7
GPQA diamond
o3 leads by +33.7
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
o3
75.8
DeepSeek V3
42.0
HELM · GPQA
o3 leads by +21.5
o3
75.3
DeepSeek V3
53.8
HELM · IFEval
o3 leads by +3.7
o3
86.9
DeepSeek V3
83.2
HELM · MMLU-Pro
o3 leads by +13.6
o3
85.9
DeepSeek V3
72.3
HELM · Omni-MATH
o3 leads by +31.1
o3
71.4
DeepSeek V3
40.3
HELM · WildBench
o3 leads by +3.0
o3
86.1
DeepSeek V3
83.1
Lech Mazur Writing
o3 leads by +6.9
Lech Mazur Writing · evaluates creative writing ability, assessing prose quality, narrative coherence, and stylistic sophistication.
o3
83.9
DeepSeek V3
77.0
MATH level 5
o3 leads by +32.9
MATH Level 5 · the hardest tier of the MATH benchmark, featuring competition-level problems from AMC, AIME, and Olympiad-style mathematics.
o3
97.8
DeepSeek V3
64.8
OTIS Mock AIME 2024-2025
o3 leads by +68.1
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
o3
83.9
DeepSeek V3
15.8
SimpleBench
o3 leads by +41.0
SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking.
o3
43.7
DeepSeek V3
2.7
WeirdML
o3 leads by +16.3
WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns.
o3
52.4
DeepSeek V3
36.1
Full benchmark table
| Benchmark | o3 | DeepSeek V3 |
|---|---|---|
Aider polyglot Aider Polyglot · measures how well AI models can edit code across multiple programming languages using the Aider coding assistant framework. | 81.3 | 48.4 |
Fiction.LiveBench Fiction.LiveBench · a continuously updated benchmark using recently published fiction to test reading comprehension and reasoning, preventing data contamination. | 88.9 | 50.0 |
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. | 18.7 | 1.7 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 75.8 | 42.0 |
HELM · GPQA | 75.3 | 53.8 |
HELM · IFEval | 86.9 | 83.2 |
HELM · MMLU-Pro | 85.9 | 72.3 |
HELM · Omni-MATH | 71.4 | 40.3 |
HELM · WildBench | 86.1 | 83.1 |
Lech Mazur Writing Lech Mazur Writing · evaluates creative writing ability, assessing prose quality, narrative coherence, and stylistic sophistication. | 83.9 | 77.0 |
MATH level 5 MATH Level 5 · the hardest tier of the MATH benchmark, featuring competition-level problems from AMC, AIME, and Olympiad-style mathematics. | 97.8 | 64.8 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 83.9 | 15.8 |
SimpleBench SimpleBench · tests fundamental reasoning capabilities with straightforward problems designed to expose gaps in basic logical and spatial thinking. | 43.7 | 2.7 |
WeirdML WeirdML · tests models on unusual and adversarial machine learning tasks that require creative problem-solving beyond standard patterns. | 52.4 | 36.1 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $2.00 | $8.00 | 200K tokens (~100 books) | $35.00 | |
| $0.32 | $0.89 | 164K tokens (~82 books) | $4.63 |