# Google: Gemini 2.5 Flash Lite Preview 09-2025: AI model fact sheet

- **Provider:** google
- **Released:** 2025-09-25
- **Context window:** 1,048,576 tokens
- **API pricing:** $0.10 / 1M input, $0.40 / 1M output
- **OpenRouter ID:** google/gemini-2.5-flash-lite-preview-09-2025
- **Capabilities:** conversation, reasoning, code-generation, analysis

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" is disabled to prioritize speed, but developers can enable it via the Reasoning API parameter to selectively trade off cost for intelligence.

Source: real side-by-side outputs, pricing and specs at https://rival.tips/models/gemini-2.5-flash-lite-preview-09-2025