Claude 3.7 Sonnet vs o3
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
o3 by OpenAI wins on 15 of 20 benchmarks against Claude 3.7 Sonnet by Anthropic, which leads on 4. 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, o3 scores 1380 on Chatbot Arena ELO compared to Claude 3.7 Sonnet's 1340, while o3 scores 84.0% on MMLU-Pro compared to Claude 3.7 Sonnet's 79.0%, while o3 scores 9.5 on MT-Bench compared to Claude 3.7 Sonnet's 9.2, while o3 scores 92.0% on IFEval compared to Claude 3.7 Sonnet's 86.0%, while o3 scores 86.0% on TruthfulQA compared to Claude 3.7 Sonnet's 85.5%.
Coding: In coding, o3 scores 90.0% on HumanEval+ compared to Claude 3.7 Sonnet's 86.0%, while o3 scores 69.1% on SWE-bench Verified compared to Claude 3.7 Sonnet's 62.3%, while o3 scores 70.0% on LiveCodeBench compared to Claude 3.7 Sonnet's 52.0%.
Math: In math, Claude 3.7 Sonnet scores 96.2% on MATH compared to o3's 96.0%, while o3 scores 98.5% on GSM8K compared to Claude 3.7 Sonnet's 95.0%, while o3 scores 98.4% on AIME 2025 compared to Claude 3.7 Sonnet's 52.7%.
Reasoning: In reasoning, Claude 3.7 Sonnet scores 84.8% on GPQA Diamond compared to o3's 83.3%, while o3 scores 75.7% on ARC-AGI compared to Claude 3.7 Sonnet's 38.0%, while o3 scores 94.0% on Winogrande compared to Claude 3.7 Sonnet's 92.3%.
Context: In context, both score 200K on Context Length.
Multimodal: In multimodal, o3 scores 86.8% on MathVista compared to Claude 3.7 Sonnet's 72.0%.
Pricing Comparison
Claude 3.7 Sonnet costs $3.0/1M input tokens and $15.0/1M output tokens, while o3 costs $2.0/1M input and $8.0/1M output. o3 is the more affordable option for API usage.
Speed Comparison
Claude 3.7 Sonnet generates output at 70 tok/s compared to o3's 40 tok/s, and the time to first token is 420 ms for Claude 3.7 Sonnet versus 800 ms for o3. Claude 3.7 Sonnet delivers faster throughput.
Verdict
For developers prioritizing math and speed, Claude 3.7 Sonnet has the edge. For those who value coding and general intelligence and affordability, o3 is the stronger choice.
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Claude 3.7 Sonnet vs o3 — FAQ
Which is better, Claude 3.7 Sonnet or o3?
o3 wins on more benchmarks overall (15 vs 4). However, the best choice depends on your specific needs — each model excels in different areas.
How does Claude 3.7 Sonnet compare to o3 for coding?
o3 is better for coding, scoring 69.1% on SWE-bench Verified compared to 62.3%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Claude 3.7 Sonnet cheaper than o3?
Yes, o3 is cheaper. Claude 3.7 Sonnet costs $3.0/1M input and $15.0/1M output tokens. o3 costs $2.0/1M input and $8.0/1M output tokens.
Which is faster, Claude 3.7 Sonnet or o3?
Claude 3.7 Sonnet is faster, generating output at 70 tok/s compared to 40 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Claude 3.7 Sonnet vs o3 comparison cover?
This comparison covers 20 benchmarks including Chatbot Arena ELO, MMLU-Pro, HumanEval+, MT-Bench, IFEval, MATH, TruthfulQA, GPQA Diamond, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.