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Anthropic

Claude Sonnet 4.6

VS
OpenAI

GPT-5.5 Pro

Decision Recommendation

⚖️ Trade-off decision: Choose GPT-5.5 Pro if you need the absolute highest accuracy for complex logic and coding. Choose Claude Sonnet 4.6 if you want to optimize your budget, as it is 11.3x cheaper.

Model Specs

Claude Sonnet 4.6

Benchmarks & Scores

Coding (swe-bench-pro)
N/A
Reasoning (gpqa-diamond)
79.9%

Cost & Performance

Cost (per 1M tokens)11.3x cheaper
$6.00Input: $3.00 | Output: $15.00
Speed
54.3 tps
Context Window
1M tokens
Model Specs

GPT-5.5 Pro

Benchmarks & Scores

Coding (swe-bench-pro)
N/A
Reasoning (gpqa-diamond)Winner (+16.3%)
96.2%

Cost & Performance

Cost (per 1M tokens)
$67.50Input: $30.00 | Output: $180.00
Speed1.4x faster
74 tps
Context WindowLarger
1.05M tokens

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