Claude Opus 4.5 vs GPT-5.2
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
GPT-5.2 by OpenAI wins on 13 of 17 benchmarks against Claude Opus 4.5 by Anthropic, which leads on 4. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from the AI Value Index.
Category-by-Category Breakdown
General Intelligence: In general intelligence, GPT-5.2 scores 1475 on Chatbot Arena ELO compared to Claude Opus 4.5's 1468, while Claude Opus 4.5 scores 89.5% on MMLU-Pro compared to GPT-5.2's 83.0%, while GPT-5.2 scores 95.0% on IFEval compared to Claude Opus 4.5's 90.0%.
Coding: In coding, GPT-5.2 scores 95.0% on HumanEval+ compared to Claude Opus 4.5's 92.0%, while Claude Opus 4.5 scores 80.9% on SWE-bench Verified compared to GPT-5.2's 80.0%, while GPT-5.2 scores 80.0% on LiveCodeBench compared to Claude Opus 4.5's 70.0%, while Claude Opus 4.5 scores 70.0% on BFCL compared to GPT-5.2's 59.2%.
Math: In math, GPT-5.2 scores 97.0% on MATH compared to Claude Opus 4.5's 90.0%, while GPT-5.2 scores 99.0% on GSM8K compared to Claude Opus 4.5's 96.5%, while GPT-5.2 scores 100.0% on AIME 2025 compared to Claude Opus 4.5's 72.0%.
Reasoning: In reasoning, GPT-5.2 scores 92.4% on GPQA Diamond compared to Claude Opus 4.5's 87.0%, while Claude Opus 4.5 scores 57.0% on ARC-AGI compared to GPT-5.2's 54.2%.
Context: In context, GPT-5.2 scores 400K on Context Length compared to Claude Opus 4.5's 200K.
Pricing Comparison
Claude Opus 4.5 costs $5.0/1M input tokens and $25.0/1M output tokens, while GPT-5.2 costs $1.8/1M input and $14.0/1M output. GPT-5.2 is the more affordable option for API usage.
Speed Comparison
Claude Opus 4.5 generates output at 50 tok/s compared to GPT-5.2's 90 tok/s, and the time to first token is 1700 ms for Claude Opus 4.5 versus 380 ms for GPT-5.2. GPT-5.2 delivers faster throughput.
Verdict
For developers prioritizing coding, Claude Opus 4.5 has the edge. For those who value general intelligence and math and affordability and speed, GPT-5.2 is the stronger choice.
View Individual Model Pages
Claude Opus 4.5 vs GPT-5.2 — FAQ
Which is better, Claude Opus 4.5 or GPT-5.2?
GPT-5.2 wins on more benchmarks overall (13 vs 4). However, the best choice depends on your specific needs — each model excels in different areas.
How does Claude Opus 4.5 compare to GPT-5.2 for coding?
Claude Opus 4.5 is better for coding, scoring 80.9% on SWE-bench Verified compared to 80.0%. SWE-bench tests real-world software engineering by resolving actual GitHub issues.
Is Claude Opus 4.5 cheaper than GPT-5.2?
Yes, GPT-5.2 is cheaper. Claude Opus 4.5 costs $5.0/1M input and $25.0/1M output tokens. GPT-5.2 costs $1.8/1M input and $14.0/1M output tokens.
Which is faster, Claude Opus 4.5 or GPT-5.2?
GPT-5.2 is faster, generating output at 90 tok/s compared to 50 tok/s. Faster output speed means shorter wait times for API responses.
What benchmarks does the Claude Opus 4.5 vs GPT-5.2 comparison cover?
This comparison covers 17 benchmarks including Chatbot Arena ELO, MMLU-Pro, HumanEval+, IFEval, MATH, SWE-bench Verified, GPQA Diamond, Output Speed, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.