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Gemini 2.5 Flash Lite

Model ID:gemini-2.5-flash-lite
2025-09-25Proprietary Model
API
PopularityNo.116

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](https://openrouter.ai/docs/use-cases/reasoning-tokens) to selectively trade off cost for intelligence.

Knowledge Cutoff
2025-01-31

The date this AI finished learning. It may not know about things that happened after this date.

Input → Output Format

The types of content this AI can receive, and what it can produce in return.

Context Memory
1.0MIN66KOUT

The maximum amount of text the AI can read and process in a single request. A larger number means it can handle longer documents or conversations.

Cost/1M Words
$0.1IN$0.4OUT

The cost of using this AI directly in your own application. Shown in USD per 1 million units of text (tokens).

AI Performance Evaluation

Arena Overall Score
1380
±3
As of 2026-04-02
Overall Rank
No.116
47,593 Votes
Arena by Ability
Hard Prompts
1391±5No.123
Expert Knowledge
1385±12No.119
Instruction Following
1365±6No.122
Conversation Memory
1373±7No.119
Creative
1361±8No.99
Coding
1398±7No.138
Math
1365±11No.130
Arena by Occupation
Creative Writing
1371±6No.102
Social Sciences
1403±7No.108
Media
1346±7No.113
Business
1378±7No.114
Healthcare
1401±12No.112
Legal
1399±11No.103
Software
1400±5No.129
Mathematics
1370±13No.124
Speed
Standard Mode
105tok/sec↑27
First Output 0.53s
Artificial Analysis