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Google: Gemini 2.5 Flash Lite

google/gemini-2.5-flash-lite

Released Jul 22, 2025Knowledge cutoff Jan 31, 20251,048,576 context$0.10/M input tokens$0.40/M output tokens

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.

Recent activity on Gemini 2.5 Flash Lite

Total usage per day on OpenRouter

Prompt
67.7B
Completion
5.86B
Reasoning
372M

Prompt tokens measure input size. Reasoning tokens show internal thinking before a response. Completion tokens reflect total output length.