Claude Sonnet 4.6 vs GPT-5.6 Sol
Side-by-side benchmark comparison across coding, math, reasoning, speed, and pricing.
GPT-5.6 Sol by OpenAI wins on 9 of 9 benchmarks against Claude Sonnet 4.6 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, GPT-5.6 Sol scores 47.1 on AA Intelligence Index compared to Claude Sonnet 4.6's 30.5.
Coding: In coding, GPT-5.6 Sol scores 77.4 on AA Coding Index compared to Claude Sonnet 4.6's 63.
Reasoning: In reasoning, GPT-5.6 Sol scores 91.9% on GPQA Diamond compared to Claude Sonnet 4.6's 54.3%, while GPT-5.6 Sol scores 50.5 on AA Agentic Index compared to Claude Sonnet 4.6's 33.1, while GPT-5.6 Sol scores 76.7% on τ²-Bench Airline compared to Claude Sonnet 4.6's 75.3%.
Context: In context, GPT-5.6 Sol scores 1.1M on Context Length compared to Claude Sonnet 4.6's 1.0M.
Pricing Comparison
Claude Sonnet 4.6 costs $3.0/1M input tokens and $15.0/1M output tokens, while GPT-5.6 Sol costs $2.0/1M input and $10.0/1M output. GPT-5.6 Sol is the more affordable option for API usage.
Verdict
GPT-5.6 Sol leads across the board in affordability, making it the stronger overall choice in this comparison.
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Claude Sonnet 4.6 vs GPT-5.6 Sol — FAQ
Which is better, Claude Sonnet 4.6 or GPT-5.6 Sol?
GPT-5.6 Sol wins on more benchmarks overall (9 vs 0). However, the best choice depends on your specific needs — each model excels in different areas.
How does Claude Sonnet 4.6 compare to GPT-5.6 Sol 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 Sonnet 4.6 cheaper than GPT-5.6 Sol?
Yes, GPT-5.6 Sol is cheaper. Claude Sonnet 4.6 costs $3.0/1M input and $15.0/1M output tokens. GPT-5.6 Sol costs $2.0/1M input and $10.0/1M output tokens.
Which is faster, Claude Sonnet 4.6 or GPT-5.6 Sol?
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 Sonnet 4.6 vs GPT-5.6 Sol comparison cover?
This comparison covers 9 benchmarks including GPQA Diamond, Input Cost, Output Cost, Context Length, AA Intelligence Index, AA Coding Index, AA Agentic Index, Cached Input Cost, and more. Metrics span general intelligence, coding, math, reasoning, speed, and cost categories.