grok-4-1-fast-non-reasoning vs grok-4.20-0309-reasoning
Lower price
grok-4-1-fast-non-reasoning
Faster
grok-4.20-0309-reasoning
Higher efficiency
grok-4-1-fast-non-reasoning
Input price
$0.20
$1.25
Output price
$0.50
$2.50
Context window
2000K
2000K
Throughput
153 tok/s
172 tok/s
Availability
99.3%
97.4%
Cost / task
$0.001
$0.004
Efficiency score
96
95
Estimated monthly cost by workload
Metric
GROK-4-1-FAST-
GROK-4.20-0309
Chat assistant
$120.00
$675.00
RAG / long context
$285.00
$1,725
Agent / tool use
$324.00
$1,800
Efficiency score: grok-4-1-fast-non-reasoning
Across price, speed and reliability, grok-4-1-fast-non-reasoning offers the stronger overall balance for most workloads — but the right pick depends on your exact mix of input, output and latency needs.
Figures are illustrative demo data, not financial advice.
Frequently asked questions
Is grok-4-1-fast-non-reasoning or grok-4.20-0309-reasoning cheaper?+
grok-4-1-fast-non-reasoning has the lower input price — $0.20 vs $1.25 per 1M tokens — so for most blended workloads it is the more cost-effective of the two. Figures are illustrative demo data.
Which should I choose, grok-4-1-fast-non-reasoning or grok-4.20-0309-reasoning?+
Across price, speed and reliability, grok-4-1-fast-non-reasoning offers the stronger overall balance for most workloads — but the right pick depends on your exact mix of input, output and latency needs.