GPT-5.6 Luna 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

Category	GPT-5.6 Luna	Kimi K2.7 Code
Provider	OpenAI	Moonshot AI
Context Window	128K	256K WIN
Input Price ($/1M)	$10	$0.6 WIN
Output Price ($/1M)	$30	$2.4 WIN
Arena ELO	N/A	N/A
Coding	N/A	N/A
Reasoning	N/A	N/A
Speed (tokens/sec)	N/A	N/A
Open Source	No	No

Frequently Asked Questions

Which is cheaper, GPT-5.6 Luna or Kimi K2.7 Code?

Kimi K2.7 Code is approximately 93% cheaper than GPT-5.6 Luna per million tokens.

Which has a larger context window?

GPT-5.6 Luna supports 128K context, while Kimi K2.7 Code supports 256K.

Is GPT-5.6 Luna or Kimi K2.7 Code open source?

GPT-5.6 Luna is proprietary. Kimi K2.7 Code is proprietary.

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