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Overview Models Image, video & speech Coding tools Production API reference

Overview Models Image, video & speech Coding tools Production API reference

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Available models Image request builder

Chat models

Gemini chat GLM-5.3 GLM-5.3 Flash Qwen DeepSeek V4.1 / V4 Grok

gemini-3.1-flash-lite-preview

gemini-3.1-flash-lite-previewChatExamples verified 2026-09-25

Gemini 3.1 Flash Lite Preview

Lightweight 3.1 preview at $0.25 / $1.5.

Official price: $0.25 / $1.50/ 1M tokensInput / output

Notes

Thinking is on by default and can't be fully turned off; a small max_tokens can leave only thinking and no answer.
Preview model with no stability guarantee; for the stable version use gemini-3.1-flash-lite.

Read the integration guideJSON Schema

Available groups

Gemini Official Direct

Integration guide

Pricing

Official price in USD. Actual charge = official price × group multiplier.

Input: $0.25 / 1M tokens
Cached input: $0.025 / 1M tokens
Output: $1.50 / 1M tokens

Endpoints

POST/v1/chat/completions

Same family

gemini-3.8-flash gemini-3.7-flash gemini-3.6-flash gemini-3.5-flash-lite gemini-3.5-flash gemini-3.1-pro-preview-customtools gemini-3.1-pro-preview gemini-3.1-flash-lite gemini-3-flash-preview gemini-2.5-pro gemini-2.5-flash-lite gemini-2.5-flash

Prices come from the public catalog; limits come from specs exported from the gateway’s validation code. Actual charge = official price × group multiplier.