Gemini 3.1 Flash-Lite

Gemini 3.1 Flash-Lite is Google's generally available Flash-Lite model in the Gemini 3 family, optimized for speed and cost on high-volume workloads.

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input · usd / 1m tok

$0.25

output · usd / 1m tok

$1.50

context window

1mtokens

modalities · in → out

pricing

base api ratesusd per 1m tokens

input: $0.25
output: $1.50
cache read: $0.025
audio input: $0.50

providers

Google hosts Gemini 3.1 Flash-Lite. Impossibl routes your request intelligently and handles failover automatically when a provider is down.

Google

specifications

takes text, image, audio and video in, gives text outgoogle/gemini-3.1-flash-lite

creatorGoogle
model typeText generation
context window1,000,000 tokens
maximum outputnot published
input
takes text, image, audio and video in, gives text out
outputtext
tool callingnot verified
releasedmay 7, 2026
endpoint/v1/chat/completions

unknown means the public catalog does not establish that fact. a model's documented capabilities can differ from what a particular api supports. see the model documentation for integration details.

try it · your prompt, this model, live

# responses API
import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["IMPOSSIBL_API_KEY"],
    base_url="https://api.impossibl.com/v1",
)

resp = client.responses.create(
    model="google/gemini-3.1-flash-lite",
    input="▌",
)
print(resp.output_text)

edit the prompt, then run

# responses API
import os
from openai import OpenAI

client = OpenAI(
    api_key=os.environ["IMPOSSIBL_API_KEY"],
    base_url="https://api.impossibl.com/v1",
)

resp = client.responses.create(
    model="google/gemini-3.1-flash-lite",
    input="▌",
)
print(resp.output_text)

edit the prompt, then run

benchmarks

intelligence index

16.0#65 of 90 models on the gateway

coding index34.7#48 of 60
agentic index3.2#47 of 49
omniscience-16.4#60 of 86
gpqa82.2%#58 of 88
humanity’s last exam17.2%#64 of 89
terminal-bench v2.131.1%#47 of 57

GPQA82.2%
IFBench77.2%
MMMU-Pro75.5%
AA-LCR74.3%
SciCode43.4%
Tau231.3%
Harvey LAB31.1%
Terminal-Bench v2.131.1%
Terminal-Bench Hard24.2%
Humanity’s Last Exam17.2%
APEX-Agents12.2%
Tau Banking9.7%
AnalystAgent8.8%
GDP.pdf All-pass7.8%
AutomationBench Partial6.8%
Multilingual LCR6.1%
CritPt1.1%
Terminal-Bench v4.00.5%

Intelligence Index16.03
Omniscience Index-16.42
GDPval Elo595.99
coding index (API)34.7
agentic index (API)3.2
intelligence index (API)16

view source ↗all source data and breakdowns (json) ↗

each configuration is listed separately; these evaluations describe the tested model configuration, and performance and costs can differ on impossibl. unmeasured scores are omitted and api values keep their source units. last checked 2026-09-11.

compare Gemini 3.1 Flash-Lite with other models

frontier labs and open weights, best-ranked firstusd / 1m tok · in / out

anthropic/claude-fable-5-1$10.00 / $50.00compare →
openai/gpt-6-astra$10.00 / $50.00compare →
meta/muse-spark-1.3$1.25 / $4.25compare →
zai/glm-5.3$1.40 / $4.40compare →

impossibl models --all →

frequently asked questions

What is Gemini 3.1 Flash-Lite?

Gemini 3.1 Flash-Lite is Google's generally available Flash-Lite model in the Gemini 3 family, optimized for speed and cost on high-volume workloads. It accepts text, image, video, audio, and PDF input and is designed for lightweight agentic tasks where a larger model would be overkill.

How much does Gemini 3.1 Flash-Lite cost?

Gemini 3.1 Flash-Lite costs $0.25 per million input tokens and $1.50 per million output tokens through the Impossibl API. Cache reads cost $0.025 per million tokens. Audio input costs $0.50 per million audio input tokens. All rates are in USD.

view the pricing table ↑

What is the context length of Gemini 3.1 Flash-Lite?

Gemini 3.1 Flash-Lite has a 1,000,000-token context window through the Impossibl API.

What inputs and outputs does Gemini 3.1 Flash-Lite support?

Gemini 3.1 Flash-Lite accepts text, image, audio, and video as input. Gemini 3.1 Flash-Lite returns text.

How do I use Gemini 3.1 Flash-Lite through an API?

Gemini 3.1 Flash-Lite is available through the Impossibl API. Use google/gemini-3.1-flash-lite as the model identifier with /v1/chat/completions. The quickstart explains how to create an API key and send your first request.

follow the api quickstart →

When was Gemini 3.1 Flash-Lite released?

Google released Gemini 3.1 Flash-Lite on May 7, 2026.

Creator release announcement ↗

this page describes Gemini 3.1 Flash-Lite as listed by the impossibl public api. prices and availability come from that catalog, refreshed here every five minutes. this is an impossibl offering, not a comparison of independent hosting-provider quotes. model descriptions and release dates, where available, use the creator sources linked under the answers above.

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