GPT-5.4 Nano vs Kimi K2.5

GPT-5.4 Nano against Kimi K2.5
GPT-5.4 NanoKimi K2.5
Coding index44.838.6
Benchmarks behind it Partial, 2 benchmarks Verified, 3 benchmarks
Output $/Mtok$1.25$2.85
Cost per solved task$0.14$0.24
Context window400K262K