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

15.6#88 of 113 models on the gateway

coding index34.7#54 of 66
agentic index1.6#51 of 54
omniscience-16.4#65 of 90
gpqa82.2%#53 of 82
humanity’s last exam17.2%#69 of 93

GPQA82.2%
IFBench77.2%
MMMU-Pro75.5%
AA-LCR74.3%
SciCode43.4%
Tau231.3%
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 LCR5.0%
CritPt1.1%

Intelligence Index15.55
Omniscience Index-16.42
GDPval Elo429.98
legal index (API)22.1
coding index (API)34.7
agentic index (API)1.6
economics index (API)23.4
engineering index (API)18.5
intelligence index (API)15.6
strategy and ops index (API)13.7
finance and accounting index (API)16.7
healthcare and medical index (API)13.5

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 2026-10-25. some source data could not be refreshed; retained results may be older.

compare Gemini 3.1 Flash-Lite with other models

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

anthropic/claude-opus-5-5$4.00 / $20.00compare →
moonshotai/kimi-k3.1-pro$2.00 / $10.00compare →
openai/gpt-6-astra$10.00 / $50.00compare →
meta/muse-wonder$4.00 / $20.00compare →

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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