Google: Gemini 2.5 Flash Lite Preview 09-2025

google/gemini-2.5-flash-lite-preview-09-2025

Released Sep 25, 20251,048,576 context

$0.10/M input tokens$0.40/M output tokens$0.30/M audio 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.

Providers for Gemini 2.5 Flash Lite Preview 09-2025

OpenRouter routes requests to the best providers that are able to handle your prompt size and parameters, with fallbacks to maximize uptime.

Performance for Gemini 2.5 Flash Lite Preview 09-2025

Compare different providers across OpenRouter

Effective Pricing for Gemini 2.5 Flash Lite Preview 09-2025

Actual cost per million tokens across providers over the past hour

Apps using Gemini 2.5 Flash Lite Preview 09-2025

Top public apps this month

Recent activity on Gemini 2.5 Flash Lite Preview 09-2025

Total usage per day on OpenRouter

Prompt

3.72B

Completion

356M

Reasoning

37.8M

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

Uptime stats for Gemini 2.5 Flash Lite Preview 09-2025

Uptime stats for Gemini 2.5 Flash Lite Preview 09-2025 across all providers

Sample code and API for Gemini 2.5 Flash Lite Preview 09-2025

OpenRouter normalizes requests and responses across providers for you.

OpenRouter provides an OpenAI-compatible completion API to 300+ models & providers that you can call directly, or using the OpenAI SDK. Additionally, some third-party SDKs are available.

In the examples below, the OpenRouter-specific headers are optional. Setting them allows your app to appear on the OpenRouter leaderboards.

Using third-party SDKs

For information about using third-party SDKs and frameworks with OpenRouter, please see our frameworks documentation.

See the Request docs for all possible fields, and Parameters for explanations of specific sampling parameters.

Gemini 2.5 Flash Lite Preview 09-2025 - API Pricing & Providers