Claude Opus 4.6 vs GPT-5.5
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
Claude Opus 4.6 by Anthropic wins on 4 of 8 benchmarks against GPT-5.5 by OpenAI, which leads on 2. This head-to-head comparison covers coding, math, reasoning, speed, and pricing metrics from our benchmark data.
Category-by-Category Breakdown
Coding: In coding, Claude Opus 4.6 scores 1289 on Design Arena ELO compared to GPT-5.5's 1272, while Claude Opus 4.6 scores 1298 on Website Arena ELO compared to GPT-5.5's 1269.
Reasoning: In reasoning, GPT-5.5 scores 93.8% on GPQA Diamond compared to Claude Opus 4.6's 85.3%, while Claude Opus 4.6 scores 75.7% on τ²-Bench Airline compared to GPT-5.5's 75.3%.
Context: In context, GPT-5.5 scores 1.1M on Context Length compared to Claude Opus 4.6's 1.0M.
Pricing Comparison
Claude Opus 4.6 costs $5.0/1M input tokens and $25.0/1M output tokens, while GPT-5.5 costs $5.0/1M input and $30.0/1M output. Both models are priced identically for input tokens.
Verdict
Claude Opus 4.6 and GPT-5.5 are closely matched. The best choice depends on your specific use case and priorities.
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Claude Opus 4.6 vs GPT-5.5 — FAQ
Which is better, Claude Opus 4.6 or GPT-5.5?
Claude Opus 4.6 wins on more benchmarks overall (4 vs 2). However, the best choice depends on your specific needs — each model excels in different areas.
How does Claude Opus 4.6 compare to GPT-5.5 for coding?
SWE-bench Verified data is not available for both models. Check the detailed comparison charts above for other coding-related metrics.
Is Claude Opus 4.6 cheaper than GPT-5.5?
Both models are priced the same at $5.0/1M input tokens. Claude Opus 4.6 output costs $25.0/1M and GPT-5.5 output costs $30.0/1M.
Which is faster, Claude Opus 4.6 or GPT-5.5?
Output speed data is not available for both models. Check the speed section of the comparison above for available performance data.
What benchmarks does the Claude Opus 4.6 vs GPT-5.5 comparison cover?
This comparison covers 8 benchmarks including GPQA Diamond, Input Cost, Output Cost, Context Length, Cached Input Cost, Design Arena ELO, τ²-Bench Airline, Website Arena ELO. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.