claude-sonnet-5 vs grok-4.5
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)
xAI’s flagship reasoning model with configurable reasoning effort.
Input$2
Output$6
Latency (p50)5.3s
Output Limit–
Function Calling
JSON Mode
-
InputText, Image
OutputText
in$2out$6cache$0.5–