gemini-2.5-flash-lite vs gemini-3.1-flash-lite-preview
Lower price
gemini-2.5-flash-lite
Faster
gemini-3.1-flash-lite-preview
Higher efficiency
gemini-2.5-flash-lite
Input price
$0.10
$0.25
Output price
$0.40
$1.50
Context window
1049K
1049K
Throughput
149 tok/s
153 tok/s
Availability
100.0%
98.3%
Cost / task
$0.000
$0.001
Efficiency score
96
96
Estimated monthly cost by workload
Metric
GEMINI-2.5-FLA
GEMINI-3.1-FLA
Chat assistant
$78.00
$255.00
RAG / long context
$156.00
$435.00
Agent / tool use
$216.00
$720.00
Efficiency score: gemini-2.5-flash-lite
Across price, speed and reliability, gemini-2.5-flash-lite 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 gemini-2.5-flash-lite or gemini-3.1-flash-lite-preview cheaper?+
gemini-2.5-flash-lite has the lower input price — $0.10 vs $0.25 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, gemini-2.5-flash-lite or gemini-3.1-flash-lite-preview?+
Across price, speed and reliability, gemini-2.5-flash-lite offers the stronger overall balance for most workloads — but the right pick depends on your exact mix of input, output and latency needs.