GPT-5.4 Nano vs GPT-6.1 Terra

GPT-5.4 Nano against GPT-6.1 Terra
GPT-5.4 NanoGPT-6.1 Terra
Coding index44.877.4
Benchmarks behind it Partial, 2 benchmarks Verified, 4 benchmarks
Output $/Mtok$1.25$5.00
Cost per solved task$0.14Not computable
Context window400K1.05M