geminiavailablesupports_audio_inputsupports_function_callingsupports_native_streamingsupports_parallel_function_callingsupports_pdf_inputsupports_prompt_cachingsupports_reasoningsupports_response_schemasupports_system_messagessupports_tool_choicesupports_url_contextsupports_video_inputsupports_visionsupports_web_search

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GoogleAvailable on AvalAI

Gemini 3.1 Flash Lite Preview API on AvalAI

gemini-3.1-flash-lite-preview

Gemini 3.1 Flash Lite Preview is an AI model from Google that is available through AvalAI's OpenAI-compatible API.

Open dashboardCompare

Price display scale

Input price$0.25 / 1M tokens

Output price$1.50 / 1M tokens

Context window1,048,576 tokens

Maximum output65,536 tokens

Release date2026-03-03

Use Gemini 3.1 Flash Lite Preview with the AvalAI API

Keep the API key in an environment variable and send requests from server-side code.

Bash

curl https://api.avalai.ir/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $AVALAI_API_KEY" \
  -d '{"model": "gemini-3.1-flash-lite-preview", "messages": [{"role": "user", "content": "Give a concise, practical solution."}]}'

Python

import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["AVALAI_API_KEY"],
    base_url="https://api.avalai.ir/v1",
)

response = client.chat.completions.create(
    model="gemini-3.1-flash-lite-preview",
    messages=[{"role": "user", "content": "Give a concise, practical solution."}],
)

print(response.choices[0].message.content)

JavaScript

import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.AVALAI_API_KEY,
  baseURL: "https://api.avalai.ir/v1",
});

const response = await client.chat.completions.create({
  model: "gemini-3.1-flash-lite-preview",
  messages: [{ role: "user", content: "Give a concise, practical solution." }],
});

console.log(response.choices[0].message.content);

Create an API keyRead the quickstart

Capabilities and endpoints

• audio_input
• function_calling
• native_streaming
• parallel_function_calling
• pdf_input
• prompt_caching
• reasoning
• response_schema
• system_messages
• tool_choice
• url_context
• video_input
• vision
• web_search

Endpoints

• /v1/chat/completions
• /v1/completions
• /v1/batch

Third-party model parameters

Third-party reference data does not change AvalAI endpoint support; use the capabilities and endpoints above.

• include_reasoning
• max_tokens
• reasoning
• reasoning_effort
• response_format
• seed
• structured_outputs
• temperature
• tool_choice
• tools
• top_p

Supplemental reasoning effort values

high, low, medium, minimal

Gemini 3.1 Flash Lite Preview rate limits

Tier	RPM	TPM
0	3	40,000
1	50	500,000
2	500	1,000,000
3	1,000	3,000,000
4	3,500	5,000,000
5	25,000	20,000,000

AvalAI and reference marketplace pricing

Token role	AvalAI final price0% platform fee	OpenRouter cost breakdown
		Model rate	Credit purchase fee	Effective OpenRouter cost after fee
Input price	$0.25 / 1M tokens	$0.25 / 1M tokens	5.5%	$0.26 / 1M tokens
Output price	$1.50 / 1M tokens	$1.50 / 1M tokens	5.5%	$1.58 / 1M tokens

AvalAI pricing is final with a 0% platform fee. The effective OpenRouter prices add its 5.5% credit purchase fee to the highest reported model rate, including long-context tiers. OpenRouter charges a 5.5% fee when credits are purchased ($0.80 minimum), so small credit purchases can have a higher effective cost. OpenRouter FAQ

Peer benchmark performance

Independent, sourced scores with no composite rating.

Artificial Analysis Agentic Index

6.5index

Score	Peer rank	Direction	Source and date
6.5 index	No comparable data	Higher is better	OpenRouter · 2026-08-15

Artificial Analysis Coding Index

34.7index

Score	Peer rank	Direction	Source and date
34.7 index	No comparable data	Higher is better	OpenRouter · 2026-08-15

Artificial Analysis Intelligence Index

25.6index

Score	Peer rank	Direction	Source and date
25.6 index	No comparable data	Higher is better	OpenRouter · 2026-08-15

Third-party model data

Source: OpenRouter

Independent sources supplement this context; AvalAI remains authoritative for pricing, availability, and endpoint support.

Reviewed snapshot 2026-08-15

Provider count

—

Context window range

1,048,576

Maximum output range

65,536

OpenRouter model input rate range

$0.25 / 1M

OpenRouter model output rate range

$1.5 / 1M

OpenRouter fee

5.5% credit purchase fee · OpenRouter fee details

Effective input price range after fee

$0.2638 / 1M

Effective output price range after fee

$1.5825 / 1M

Related models

• Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image)
• Gemini 3.1 Flash Lite
• Nano Banana 2 (Gemini 3.1 Flash Image Preview)
• Nano Banana 2 (Gemini 3.1 Flash Image)

Frequently asked questions

What is the Gemini 3.1 Flash Lite Preview API on AvalAI?

Create an AvalAI API key and send the model ID gemini-3.1-flash-lite-preview to one of the supported endpoints shown on this page.

How much does the Gemini 3.1 Flash Lite Preview API cost on AvalAI?

The Gemini 3.1 Flash Lite Preview API on AvalAI costs $0.25 per 1M input tokens and $1.50 per 1M output tokens.

What is the token cost for Gemini 3.1 Flash Lite Preview?

Current AvalAI pricing for Gemini 3.1 Flash Lite Preview is $0.25 / 1M tokens for input and $1.50 / 1M tokens for output.

What is the Gemini 3.1 Flash Lite Preview context window?

The recorded maximum input context for Gemini 3.1 Flash Lite Preview is 1,048,576 tokens.

Third-party data and freshness

• Pricing, availability, endpoints, and rate limits: AvalAI structured data (authoritative)
• OpenRouter marketplace · Last checked: 2026-08-15