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MoonshotAI: Kimi K2.7 Code vs OpenAI: GPT-5.3-Codex

moonshotai logoMoonshotAI: Kimi K2.7 Codemoonshotai/kimi-k2.7-codeVSopenai logoOpenAI: GPT-5.3-Codexopenai/gpt-5.3-codex

MoonshotAI: Kimi K2.7 Code wins on more metrics (6 of 9), but the right pick depends on what you optimize for — see the breakdown below.

MetricMoonshotAI: Kimi K2.7 CodeOpenAI: GPT-5.3-Codex
Intelligence Index41.944.3✓
Coding Index60.8✓—
GPQA Diamond90%92%✓
Design Arena Elo1319✓1206
Speed (tokens/sec)108✓61
Latency518ms✓2.0s
Input price /M$0.740✓$1.75
Output price /M$3.50✓$14.00
Context window262K400K✓
CapabilitiesReasoningToolsJSONVisionReasoningToolsJSONVision
MoonshotAI: Kimi K2.7 Code details →OpenAI: GPT-5.3-Codex details →