claude-sonnet-5 vs gpt-5.6-terra
Pricing, Performance & Features Comparison
Near-Opus quality on coding and agentic work at Sonnet cost; adaptive thinking is on by default and non-default sampling parameters are rejected.
Input$3
Output$15
Latency (p50)5.8s
Output Limit128K
Function Calling
JSON Mode
InputText, Image
OutputText
in$3out$15cache$0.3write$3.8
Latency (24h)
Success Rate (24h)
Mid tier of the GPT-5.6 family (Terra), balancing frontier reasoning quality against cost.
Input$2.5
Output$15
Latency (p50)4s
Output Limit128K
Function Calling
JSON Mode
-
InputText, Image
OutputText
in$2.5out$15cache$0.25–