deepseek-v4-flash vs xai/grok-4-fast-reasoning
Lower price
xai/grok-4-fast-reasoning
Faster
xai/grok-4-fast-reasoning
Higher efficiency
deepseek-v4-flash
Input price
$0.14
$0.00
Output price
$0.28
$0.00
Context window
1049K
2000K
Throughput
120 tok/s
162 tok/s
Availability
100.0%
99.5%
Cost / task
$0.000
$0.000
Efficiency score
96
96
Estimated monthly cost by workload
Metric
DEEPSEEK-V4-FL
XAI
Chat assistant
$75.60
$0.00
RAG / long context
$193.20
$0.00
Agent / tool use
$201.60
$0.00
Efficiency score: deepseek-v4-flash
Across price, speed and reliability, deepseek-v4-flash 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 deepseek-v4-flash or xai/grok-4-fast-reasoning cheaper?+
xai/grok-4-fast-reasoning has the lower input price — $0.00 vs $0.14 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, deepseek-v4-flash or xai/grok-4-fast-reasoning?+
Across price, speed and reliability, deepseek-v4-flash offers the stronger overall balance for most workloads — but the right pick depends on your exact mix of input, output and latency needs.