Claude 3 Opus vs GPT-5 Nano
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Claude 3 Opus by Anthropic and GPT-5 Nano by OpenAI are evenly matched across 14 benchmarks. 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 3 Opus scores 1240 on Chatbot Arena ELO compared to GPT-5 Nano's 1200, while Claude 3 Opus scores 68.0% on MMLU-Pro compared to GPT-5 Nano's 62.0%.
Coding: In coding, Claude 3 Opus scores 78.0% on HumanEval+ compared to GPT-5 Nano's 72.0%, while GPT-5 Nano scores 25.0% on SWE-bench Verified compared to Claude 3 Opus's 22.0%, while Claude 3 Opus scores 32.0% on LiveCodeBench compared to GPT-5 Nano's 30.0%.
Math: In math, Claude 3 Opus scores 68.0% on MATH compared to GPT-5 Nano's 65.0%, while Claude 3 Opus scores 88.0% on GSM8K compared to GPT-5 Nano's 85.0%.
Reasoning: In reasoning, Claude 3 Opus scores 59.4% on GPQA Diamond compared to GPT-5 Nano's 35.0%, while GPT-5 Nano scores 15.0% on ARC-AGI compared to Claude 3 Opus's 8.0%.
Context: In context, GPT-5 Nano scores 400K on Context Length compared to Claude 3 Opus's 200K.
Pricing Comparison
Claude 3 Opus costs $15.0/1M input tokens and $75.0/1M output tokens, while GPT-5 Nano costs $0.05/1M input and $0.40/1M output. GPT-5 Nano is the more affordable option for API usage.
Speed Comparison
Claude 3 Opus generates output at 25 tok/s compared to GPT-5 Nano's 250 tok/s, and the time to first token is 800 ms for Claude 3 Opus versus 80 ms for GPT-5 Nano. GPT-5 Nano delivers faster throughput.
Verdict
For developers prioritizing general intelligence and math, Claude 3 Opus has the edge. For those who value coding and affordability and speed, GPT-5 Nano is the stronger choice.
View Individual Model Pages
Claude 3 Opus vs GPT-5 Nano — FAQ
Which is better, Claude 3 Opus or GPT-5 Nano?
Claude 3 Opus and GPT-5 Nano are evenly matched across benchmarks. The best choice depends on your specific priorities such as coding ability, speed, or pricing.
How does Claude 3 Opus compare to GPT-5 Nano for coding?
GPT-5 Nano is better for coding, scoring 25.0% 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 GPT-5 Nano?
Yes, GPT-5 Nano is cheaper. Claude 3 Opus costs $15.0/1M input and $75.0/1M output tokens. GPT-5 Nano costs $0.05/1M input and $0.40/1M output tokens.
Which is faster, Claude 3 Opus or GPT-5 Nano?
GPT-5 Nano is faster, generating output at 250 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 GPT-5 Nano comparison cover?
This comparison covers 14 benchmarks including Chatbot Arena ELO, MMLU-Pro, HumanEval+, MATH, GPQA Diamond, SWE-bench Verified, Output Speed, LiveCodeBench, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.