Skip to main content
Glama

grok-4-fast-reasoning vs grok-4-fast-non-reasoning

Pricing, Performance & Features Comparison

Authorxai
Context Length2M
Reasoning
Providers1
ReleasedSep 2025
Knowledge Cutoff
License

xAI latest advancement in cost-efficient reasoning models.

Input$0.2
Output$0.5
Latency (p50)3.5s
Output Limit
Function Calling
JSON Mode
-
Input
Output
in$0.2out$0.5write$0.05
Latency (24h)
Success Rate (24h)
Authorxai
Context Length2M
Reasoning
-
Providers1
ReleasedSep 2025
Knowledge Cutoff
License

xAI latest advancement in cost-efficient reasoning models.

Input$0.2
Output$0.5
Latency (p50)1.8s
Output Limit
Function Calling
JSON Mode
-
Input
Output
in$0.2out$0.5write$0.05
Latency (24h)
Success Rate (24h)