AnthropicClaude Sonnet 4.6VSOpenAIGPT-5.5 Pro
Our Take
Standardized reasoning and coding benchmarks are currently pending verification for one or both of these models. We recommend testing Claude Sonnet 4.6 and GPT-5.5 Pro directly in their respective provider playgrounds to see which fits your specific prompt styles best.
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Benchmarks & Scores
Coding (swe-bench-pro)
N/Acomplex codebases, multi-file repositories, and architectural planning
Reasoning (gpqa-diamond)
79.9%graduate-level science QA
Cost & Context
Cost (per 1M tokens)11.3x cheaper
$6.00Input: $3.00 | Output: $15.00Context Window
1.05M tokensBenchmarks & Scores
Coding (swe-bench-pro)
N/Acomplex codebases, multi-file repositories, and architectural planning
Reasoning (gpqa-diamond)Winner (+16.3%)
96.2%graduate-level science QA
Cost & Context
Cost (per 1M tokens)
$67.50Input: $30.00 | Output: $180.00Context WindowLarger
1.05M tokensFrequently Asked Questions about Claude Sonnet 4.6 vs GPT-5.5 Pro
Claude Sonnet 4.6 is cheaper than GPT-5.5 Pro. Claude Sonnet 4.6 has a blended cost of $6.00/1M tokens, which is about 11.3x cheaper than GPT-5.5 Pro at $67.50/1M tokens.
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