GPT-5.6 Terra vs Mercury 2.5

GPT-5.6 Terra against Mercury 2.5
GPT-5.6 TerraMercury 2.5
Coding index63.91.6
Benchmarks behind it Verified, 6 benchmarks Partial, 2 benchmarks
Output $/Mtok$12.00$0.15
Cost per solved task$0.42Not computable
Context window1.05M260K