gpt-4.1-mini vs grok-4-fast
Input price
$0.40
$0.20
Output price
$1.60
$0.50
Context window
1048K
2000K
Throughput
146 tok/s
132 tok/s
Availability
96.9%
99.3%
Cost / task
$0.002
$0.001
Efficiency score
96
96
Estimated monthly cost by workload
Metric
GPT-4.1-MINI
GROK-4-FAST
Chat assistant
$312.00
$120.00
RAG / long context
$624.00
$285.00
Agent / tool use
$864.00
$324.00
Efficiency score: grok-4-fast
Across price, speed and reliability, grok-4-fast 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 gpt-4.1-mini or grok-4-fast cheaper?+
grok-4-fast has the lower input price — $0.20 vs $0.40 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, gpt-4.1-mini or grok-4-fast?+
Across price, speed and reliability, grok-4-fast offers the stronger overall balance for most workloads — but the right pick depends on your exact mix of input, output and latency needs.