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Spec
OpenAI o1
GPT-4o
Intelligence index↑ better
Winner76
72
Speed↑ better
32 tok/s
Winner110 tok/s
Time to first token↓ better
12 s
Winner0.4 s
Context window↑ better
Winner200k
128k
Max output↑ better
Winner100k
16k
Input price↓ better
$15.00 / 1M tokens
Winner$2.50 / 1M tokens
Output price↓ better
$60.00 / 1M tokens
Winner$10.00 / 1M tokens
Blended price↓ better
$26.25 / 1M tokens
Winner$4.38 / 1M tokens
License
Proprietary
Proprietary
Input modalities
text, image
text, image, audio
Output modalities
text
text, audio
Benchmark showdown
MMLU
OpenAI o1
91.8
GPT-4o
88.7
MMLU Pro
OpenAI o1
80.0
GPT-4o
73.3
GPQA
OpenAI o1
78.0
GPT-4o
53.1
MATH
OpenAI o1
94.8
GPT-4o
76.6
HumanEval
OpenAI o1
92.4
GPT-4o
90.2
Strengths, weaknesses and best-for
OpenAI o1
Strengths
- Tops MATH and GPQA leaderboards
- Self-checks its work
Weaknesses
- Very slow
- Very expensive
- Overkill for simple tasks
Best for
- Research problems
- Olympiad-level math
- Algorithm design
GPT-4o
Strengths
- Strong multimodal
- Voice-native
- Mature ecosystem
Weaknesses
- Weaker than GPT-5.5 on reasoning
- Smaller context vs newer models
Best for
- General-purpose chat
- Voice apps
- Vision tasks
Quick verdict
- Pick OpenAI o1 if you want it smarter and longer context.
- Pick GPT-4o if you want it faster and cheaper.
Auto-generated from the spec sheet. Always validate on your own evals.
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