Gemini 2.5 Flash Lite

Gemini 2.5 Flash-Lite is a lightweight reasoning model in the Gemini 2.5 family, optimized for ultra-low latency and cost efficiency. It offers improved throughput, faster token generation, and better performance across common benchmarks compared to earlier Flash models. By default, "thinking" (i.e. multi-pass reasoning) is disabled to prioritize speed, but developers can enable it via the Reasoning API parameter to selectively trade off cost for intelligence.

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Model details

Context window1,048,576 tokens
Max completion size35 tokens
Prompt cost / 1K tokens$0.0000001
Completion cost / 1K tokens$0.0000004
Accepts
Produces

Benchmark performance

Overall

56
score
28th
placement

Cost

98
score
3rd
placement

Logic

82
score
6th
placement

Speed

89
score
11th
placement

Scoring

34
score
14th
placement

Tool Use

19
score
9th
placement

Hallucination

34
score
20th
placement

Classification

19
score
4th
placement

Structured Output

25
score
9th
placement

Pricing

Usage pricing
Prompt
$0.0000001
Completion
$0.0000004
Request
FREE
Image
FREE
Web Search
FREE
Internal Reasoning
FREE
Input Cache Read
FREE
Input Cache Write
FREE

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