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Gemini 2.5 Flash Lite Preview 09-2025

by GoogleReleased 25 September 2025

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...

TakesTextImagesVideoAudioFiles
GivesText

Reads about 1 000 pages · writes up to 65 pages

Parameters you can send

Standard OpenAI fields, grouped by what they control. Anything not listed is accepted and ignored.

Shaping the reply

How long, how varied, where to stop.

max_tokenstemperaturetop_pstopseed

Reasoning

Let it think before answering — and see the thinking.

reasoninginclude_reasoning

Structured output

Get JSON you can parse instead of prose.

response_formatstructured_outputs

Tools

Let the model call your functions.

toolstool_choice

Questions about Gemini 2.5 Flash Lite Preview 09-2025

  • Is Gemini 2.5 Flash Lite Preview 09-2025 still on sale?

    No. Google has retired it. Other Google models are on sale.

  • What is Gemini 2.5 Flash Lite Preview 09-2025 best for?

    The lab has not said.

  • Does Gemini 2.5 Flash Lite Preview 09-2025 work in Arabic, French or Darja?

    Google names no languages for Gemini 2.5 Flash Lite Preview 09-2025. Arabic, French and Darja: not stated.

  • Can it read PDFs, images or a whole book?

    It reads text, images, video, audio and files. Up to 1M tokens in one request, about 1 000 pages. It writes up to 49 000 words at once.

  • Is Gemini 2.5 Flash Lite Preview 09-2025 open source?

    No. Google has not published its weights.

  • Who makes Gemini 2.5 Flash Lite Preview 09-2025, and when was it released?

    Google. Released 25 September 2025. It knows the world up to 31 January 2025.

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