gpt-4.1-mini vs xai/grok-4-fast-reasoning
Lower price
xai/grok-4-fast-reasoning
Faster
xai/grok-4-fast-reasoning
Higher efficiency
xai/grok-4-fast-reasoning
Input price
$0.40
$0.00
Output price
$1.60
$0.00
Context window
1048K
2000K
Throughput
146 tok/s
162 tok/s
Availability
96.9%
99.5%
Cost / task
$0.002
$0.000
Efficiency score
96
96
Estimated monthly cost by workload
Metric
GPT-4.1-MINI
XAI
Chat assistant
$312.00
$0.00
RAG / long context
$624.00
$0.00
Agent / tool use
$864.00
$0.00
Efficiency score: xai/grok-4-fast-reasoning
Across price, speed and reliability, xai/grok-4-fast-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 gpt-4.1-mini or xai/grok-4-fast-reasoning cheaper?+
xai/grok-4-fast-reasoning has the lower input price — $0.00 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 xai/grok-4-fast-reasoning?+
Across price, speed and reliability, xai/grok-4-fast-reasoning offers the stronger overall balance for most workloads — but the right pick depends on your exact mix of input, output and latency needs.