Moonshot AI (Kimi)Kimi K3VSOpenAIGPT-5.5 Pro
Our Take
Standardized reasoning and coding benchmarks are currently pending verification for one or both of these models. We recommend testing Kimi K3 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/Aexcellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)
93.5%graduate-level science QA
Cost & Context
Cost (per 1M tokens)39.4x cheaper
$1.71Input: $0.95 | Output: $4.00Context Window
262.14k tokensBenchmarks & Scores
Coding (swe-bench-pro)
N/Aexcellent at multi-file repositories, autonomous agents, and industrial codebases
Reasoning (gpqa-diamond)Winner (+2.7%)
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 Kimi K3 vs GPT-5.5 Pro
Kimi K3 is cheaper than GPT-5.5 Pro. Kimi K3 has a blended cost of $1.71/1M tokens, which is about 39.4x cheaper than GPT-5.5 Pro at $67.50/1M tokens.
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