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OpenAI o1 vs Claude 4 Sonnet
Side-by-side intelligence, speed, price, benchmarks, strengths and weaknesses for OpenAI o1 and Claude 4 Sonnet — refreshed monthly.
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Spec
OpenAI o1
Claude 4 Sonnet
Intelligence index↑ better
Winner76
75
Speed↑ better
32 tok/s
Winner95 tok/s
Time to first token↓ better
12 s
Winner0.85 s
Context window↑ better
200k
Winner500k
Max output↑ better
Winner100k
16k
Input price↓ better
$15.00 / 1M tokens
Winner$3.00 / 1M tokens
Output price↓ better
$60.00 / 1M tokens
Winner$15.00 / 1M tokens
Blended price↓ better
$26.25 / 1M tokens
Winner$6.00 / 1M tokens
License
Proprietary
Proprietary
Input modalities
text, image
text, image
Output modalities
text
text
Benchmark showdown
MMLU
OpenAI o1
91.8
Claude 4 Sonnet
88.5
MMLU Pro
OpenAI o1
80.0
Claude 4 Sonnet
75.2
GPQA
OpenAI o1
78.0
Claude 4 Sonnet
58.0
MATH
OpenAI o1
94.8
Claude 4 Sonnet
82.0
HumanEval
OpenAI o1
92.4
Claude 4 Sonnet
93.2
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
Claude 4 Sonnet
Strengths
- Best $/HumanEval ratio
- Fast
- 500k context
Weaknesses
- Behind Opus on hardest reasoning
Best for
- Production coding tools
- Long-context RAG
- Tool use
Quick verdict
- Pick OpenAI o1 if you want it smarter.
- Pick Claude 4 Sonnet if you want it faster, cheaper and longer context.
Auto-generated from the spec sheet. Always validate on your own evals.
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