Gemini 3.1 Flash Lite

Google· released 7 May 2026

google/gemini-3.1-flash-lite

Input / 1M tokens: $0.25
Output / 1M tokens: $1.5

Context window1M tokens

Longest answer: 66K tokens

reads textreads imagereads videoreads filereads audiotool callingvisionreasoning

About

Gemini 3.1 Flash Lite is a Google multimodal model for low-latency, high-volume workloads. It accepts text, images, video, audio and files, including PDF input, and produces text. Google lists support for vision, tools and reasoning. Its context window is 1,048,576 tokens, with a maximum output of 65,536 tokens. Pricing is USD 0.25 per 1M input tokens and USD 1.5 per 1M output tokens. The model was released on 2026-05-07. Its model ID is google/gemini-3.1-flash-lite. The listed summary describes it as a high-efficiency model designed for lightweight agentic work, making throughput and latency central considerations for teams evaluating it.

Who it is for

Teams handling high-volume, latency-sensitive workloads that need text, image, video, audio or PDF inputs may consider it. It also suits lightweight agentic tasks requiring tool and reasoning support.

What is good

Accepts text, image, video, audio and file inputs
Context window of 1,048,576 tokens
Tool and reasoning support are listed
Maximum output is 65,536 tokens

What to know first

Outputs text only
Input costs USD 0.25 per 1M tokens
Output costs USD 1.5 per 1M tokens

Verdict

Gemini 3.1 Flash Lite combines broad input modalities with a large context window and tool support. Its listed output is text, with pricing of USD 0.25 per 1M input tokens and USD 1.5 per 1M output tokens.

Details

Lab: Googleopenrouter.ai · 3 Oct 2026
Context: 1,049Kopenrouter.ai · 3 Oct 2026
Input price: $0.25 / 1Mopenrouter.ai · 3 Oct 2026
Output price: $1.5 / 1Mopenrouter.ai · 3 Oct 2026
Max output: 65,536 tokensopenrouter.ai · 3 Oct 2026
Inputs: text, image, video, file, audioopenrouter.ai · 3 Oct 2026
Open weights: Noopenrouter.ai · 3 Oct 2026

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Sources

openrouter.ai/google/gemini-3.1-flash-lite· checked 3 Oct 2026