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GPT-5.5 vs Kimi K2.7 Code

Kimi K2.7 Code leads in 3 of 8 categories

Arena ELO

Tie

Cheaper

Kimi K2.7 Code

Faster

Tie

Detailed Comparison

CategoryGPT-5.5Kimi K2.7 Code
ProviderOpenAI Moonshot AI
Context Window128K 256K WIN
Input Price ($/1M)$5 $0.6 WIN
Output Price ($/1M)$30 $2.4 WIN
Arena ELON/A N/A
CodingN/A N/A
ReasoningN/A N/A
Speed (tokens/sec)N/A N/A
Open SourceNo No

Frequently Asked Questions

Which is cheaper, GPT-5.5 or Kimi K2.7 Code?

Kimi K2.7 Code is approximately 91% cheaper than GPT-5.5 per million tokens.

Which has a larger context window?

GPT-5.5 supports 128K context, while Kimi K2.7 Code supports 256K.

Is GPT-5.5 or Kimi K2.7 Code open source?

GPT-5.5 is proprietary. Kimi K2.7 Code is proprietary.

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