Claude Sonnet 4 vs o1
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Claude Sonnet 4 by Anthropic wins on 10 of 17 benchmarks against o1 by OpenAI, which leads on 7. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.
Category-by-Category Breakdown
General Intelligence: In general intelligence, Claude Sonnet 4 scores 1365 on Chatbot Arena ELO compared to o1's 1360, while o1 scores 82.0% on MMLU-Pro compared to Claude Sonnet 4's 81.0%, while o1 scores 92.0% on IFEval compared to Claude Sonnet 4's 87.0%.
Coding: In coding, o1 scores 89.0% on HumanEval+ compared to Claude Sonnet 4's 88.0%, while Claude Sonnet 4 scores 72.7% on SWE-bench Verified compared to o1's 48.9%, while Claude Sonnet 4 scores 58.0% on LiveCodeBench compared to o1's 55.0%, while o1 scores 39.7 on AA Coding Index compared to Claude Sonnet 4's 37.6.
Math: In math, o1 scores 94.8% on MATH compared to Claude Sonnet 4's 85.0%, while o1 scores 97.5% on GSM8K compared to Claude Sonnet 4's 94.5%.
Reasoning: In reasoning, o1 scores 77.3% on GPQA Diamond compared to Claude Sonnet 4's 75.4%, while Claude Sonnet 4 scores 42.0% on ARC-AGI compared to o1's 32.0%.
Context: In context, Claude Sonnet 4 scores 1.0M on Context Length compared to o1's 200K.
Pricing Comparison
Claude Sonnet 4 costs $3.0/1M input tokens and $15.0/1M output tokens, while o1 costs $15.0/1M input and $60.0/1M output. Claude Sonnet 4 is the more affordable option for API usage.
Speed Comparison
Claude Sonnet 4 generates output at 75 tok/s compared to o1's 35 tok/s, and the time to first token is 400 ms for Claude Sonnet 4 versus 1000 ms for o1. Claude Sonnet 4 delivers faster throughput.
Verdict
For developers prioritizing coding and general intelligence and affordability and speed, Claude Sonnet 4 has the edge. For those who value math, o1 is the stronger choice.
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Claude Sonnet 4 vs o1 — FAQ
Which is better, Claude Sonnet 4 or o1?
Claude Sonnet 4 wins on more benchmarks overall (10 vs 7). However, the best choice depends on your specific needs — each model excels in different areas.
How does Claude Sonnet 4 compare to o1 for coding?
Claude Sonnet 4 is better for coding, scoring 72.7% on SWE-bench Verified compared to 48.9%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Claude Sonnet 4 cheaper than o1?
Yes, Claude Sonnet 4 is cheaper. Claude Sonnet 4 costs $3.0/1M input and $15.0/1M output tokens. o1 costs $15.0/1M input and $60.0/1M output tokens.
Which is faster, Claude Sonnet 4 or o1?
Claude Sonnet 4 is faster, generating output at 75 tok/s compared to 35 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Claude Sonnet 4 vs o1 comparison cover?
This comparison covers 17 benchmarks including Chatbot Arena ELO, MMLU-Pro, HumanEval+, IFEval, MATH, GPQA Diamond, SWE-bench Verified, Output Speed, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.