gpt-5.6-sol vs claude-sonnet-5
Pricing, Performance & Features Comparison
Flagship tier of the GPT-5.6 family (Sol), OpenAI’s frontier reasoning model for the most demanding tasks.
Input$5
Output$30
Latency (p50)4.9s
Output Limit128K
Function Calling
JSON Mode
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InputText, Image
OutputText
in$5out$30cache$0.5–
Latency (24h)
Success Rate (24h)
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)5.6s
Output Limit128K
Function Calling
JSON Mode
InputText, Image
OutputText
in$3out$15cache$0.3write$3.8