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claude-sonnet-5 vs gpt-5.6-terra

Pricing, Performance & Features Comparison

Authoranthropic
Context Length1M
Reasoning
Providers1
ReleasedJun 2026
Knowledge Cutoff
License

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)
Authoropenai
Context Length1M
Reasoning
Providers1
ReleasedJul 2026
Knowledge CutoffFeb 2026
License

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
Latency (24h)
Success Rate (24h)