grok-4-fast-non-reasoning vs grok-4-fast-reasoning
Pricing, Performance & Features Comparison
xAI latest advancement in cost-efficient reasoning models.
Input$0.2
Output$0.5
Latency (p50)1.3s
Output Limit-
Function Calling
JSON Mode
-
Input-
Output-
in$0.2out$0.5-write$0.05
Latency (24h)
Success Rate (24h)
xAI latest advancement in cost-efficient reasoning models.
Input$0.2
Output$0.5
Latency (p50)2.3s
Output Limit-
Function Calling
JSON Mode
-
Input-
Output-
in$0.2out$0.5-write$0.05