Claude 3 Opus vs o3
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
o3 by OpenAI wins on 18 of 20 benchmarks against Claude 3 Opus by Anthropic, which leads on 0. 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 Opus's 1240, while o3 scores 84.0% on MMLU-Pro compared to Claude 3 Opus's 68.0%, while o3 scores 9.5 on MT-Bench compared to Claude 3 Opus's 8.8, while o3 scores 92.0% on IFEval compared to Claude 3 Opus's 82.0%, while o3 scores 49.4% on SimpleQA compared to Claude 3 Opus's 29.0%, while o3 scores 86.0% on TruthfulQA compared to Claude 3 Opus's 81.0%.
Coding: In coding, o3 scores 90.0% on HumanEval+ compared to Claude 3 Opus's 78.0%, while o3 scores 69.1% on SWE-bench Verified compared to Claude 3 Opus's 22.0%, while o3 scores 70.0% on LiveCodeBench compared to Claude 3 Opus's 32.0%.
Math: In math, o3 scores 96.0% on MATH compared to Claude 3 Opus's 68.0%, while o3 scores 98.5% on GSM8K compared to Claude 3 Opus's 88.0%.
Reasoning: In reasoning, o3 scores 83.3% on GPQA Diamond compared to Claude 3 Opus's 59.4%, while o3 scores 75.7% on ARC-AGI compared to Claude 3 Opus's 8.0%, while o3 scores 95.8% on BBH compared to Claude 3 Opus's 86.8%, while o3 scores 94.0% on Winogrande compared to Claude 3 Opus's 90.5%.
Context: In context, both score 200K on Context Length.
Pricing Comparison
Claude 3 Opus costs $15.0/1M input tokens and $75.0/1M 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 Opus generates output at 25 tok/s compared to o3's 40 tok/s, and the time to first token is 800 ms for Claude 3 Opus versus 800 ms for o3. o3 delivers faster throughput.
Verdict
o3 leads across the board in coding, general intelligence, math, affordability, speed, making it the stronger overall choice in this comparison.
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Claude 3 Opus vs o3 — FAQ
Which is better, Claude 3 Opus or o3?
o3 wins on more benchmarks overall (18 vs 0). However, the best choice depends on your specific needs — each model excels in different areas.
How does Claude 3 Opus compare to o3 for coding?
o3 is better for coding, scoring 69.1% on SWE-bench Verified compared to 22.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Claude 3 Opus cheaper than o3?
Yes, o3 is cheaper. Claude 3 Opus costs $15.0/1M input and $75.0/1M output tokens. o3 costs $2.0/1M input and $8.0/1M output tokens.
Which is faster, Claude 3 Opus or o3?
o3 is faster, generating output at 40 tok/s compared to 25 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Claude 3 Opus vs o3 comparison cover?
This comparison covers 20 benchmarks including Chatbot Arena ELO, MMLU-Pro, HumanEval+, MT-Bench, IFEval, SimpleQA, MATH, TruthfulQA, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.