Gemini 3.1 Flash Lite Preview

Gemini 3.1 Flash Lite Preview is Google's high-efficiency model optimized for high-volume use cases. It outperforms Gemini 2.5 Flash Lite on overall quality and approaches Gemini 2.5 Flash performance across key capabilities. Improvements span audio input/ASR, RAG snippet ranking, translation, data extraction, and code completion. Supports full thinking levels (minimal, low, medium, high) for fine-grained cost/performance trade-offs. Priced at half the cost of Gemini 3 Flash.

google/gemini-3.1-flash-lite-preview

Organization: Google
Family: gemini-flash-lite
Providers: 10
Context: 1,048,576
Output limit: 65,536
Knowledge: 2025-01
Release: 2026-03-03
Updated: —
Weights: Closed
Input: text, image/png, image/jpeg, image/webp, image/heic, image/heif, video/mp4, video/mpeg, video/mov, video/avi, video/x-flv, video/mpg, video/webm, video/wmv, video/3gpp, audio/wav, audio/mp3, audio/aiff, audio/aac, audio/ogg, audio/flac, audio/mpeg, audio/m4a, audio/l16, audio/opus, audio/alaw, audio/mulaw, audio/webm, application/pdf
Output: text
Capabilities: —

Providers

Compare every cataloged offer for this model, including its provider, route, token limits, price, and capabilities.

12 offers · USD per million tokens

Provider	Model ID	Context	Output	Input / output · 1M	Reasoning	Tools	Structured	Details
302.AI	gemini-3.1-flash-lite-preview	1,048,576	65,536	— / —	—	—	—	View
Abacus	gemini-3.1-flash-lite-preview	1,048,576	65,536	— / —	—	—	—	View
AI/ML API	google/gemini-3.1-flash-lite-preview	1,000,000	65,536	— / —	—	—	—	View
Databricks	databricks-gemini-3-1-flash-lite	1,048,576	65,536	— / —	—	—	—	View
Eden AI	google/gemini-3.1-flash-lite-preview	1,048,576	65,536	— / —	—	—	—	View
Kilo Gateway	google/gemini-3.1-flash-lite-preview	1,048,576	65,536	— / —	—	—	—	View
Neon	gemini-3-1-flash-lite	1,048,576	65,536	— / —	—	—	—	View
Google AI Studiovia OpenRouter	google/gemini-3.1-flash-lite-preview unknown	1,048,576	65,536	$0.45 / $2.70	Yes	Yes	Yes	View
Google AI Studiovia OpenRouter	google/gemini-3.1-flash-lite-preview unknown	1,048,576	65,536	$0.25 / $1.50	Yes	Yes	Yes	View
Google AI Studiovia OpenRouter	google/gemini-3.1-flash-lite-preview unknown	1,048,576	65,536	$0.125 / $0.75	Yes	Yes	Yes	View
OrcaRouter	google/gemini-3.1-flash-lite-preview	1,048,576	65,536	— / —	—	—	—	View
Vivgrid	gemini-3.1-flash-lite-preview	1,048,576	65,536	— / —	—	—	—	View

Prices and limits apply to each offer. A dash means the value is not provided. OpenRouter offers show the hosting provider and routing channel separately.

Pricing

Compare token rates and cache charges across available routes and hosting configurations.

USD per million tokens

Input from$0.125Per 1M input tokens

Output from$0.75Per 1M output tokens

Available offers12Across 10 providers

Lowest listed input and output prices across the offers above; they may belong to different providers. These are base rates, before conditional pricing, discounts or additional fees.

Endpoint price comparisonLatest observed snapshot · 3 lowest-priced configurations

InputOutput

Google AI Studiogoogle-ai-studio/flex

$0.125$0.75

Google AI Studiogoogle-ai-studio

$0.25$1.50

Google AI Studiogoogle-ai-studio/priority

$0.45$2.70

google/gemini-3.1-flash-lite-previewObserved Oct 10, 2026, 11:31 AM UTC

Input: $0.25
Output: $1.50
Cache read: $0.025
Cache write: $0.083333

Additional fees and pricing conditions

audio: $0.0000005 / audio token
image: $0.00000025 / image
web search: $0.014 / search
input audio cache: $0.00000005 / audio token
internal reasoning: $0.0000015 / reasoning token

Hosting prices through OpenRouter All endpoints and cache rates

Endpoint	Input / 1M	Output / 1M	Cache read / 1M	Cache write / 1M
Google AI Studiogoogle-ai-studio/priority	$0.45	$2.70	$0.045	$0.15
Google AI Studiogoogle-ai-studio	$0.25	$1.50	$0.025	$0.083333
Google AI Studiogoogle-ai-studio/flex	$0.125	$0.75	$0.0125	$0.041667

Each row is a hosting configuration. Open an offer in Providers for its full pricing conditions and additional fees. Endpoint observations may differ from the routing catalog's base price.

Performance

Review reported latency and output-throughput percentiles from the latest observed rolling window.

Latest 30-minute observation

Time to first token · milliseconds

Latency distributionRolling 30-minute snapshot · 3 endpoints

P50P75P90P99

Google AI Studiogoogle-ai-studio/priority

420–16,491.16 ms

Google AI Studiogoogle-ai-studio

819–9,462.18 ms

Google AI Studiogoogle-ai-studio/flex

824–2,906.86 ms

All latency percentiles 3 endpoints

Endpoint	P50	P75	P90	P99
Google AI Studiogoogle-ai-studio/priority	420 ms	487 ms	1,104.4 ms	16,491.16 ms
Google AI Studiogoogle-ai-studio	819 ms	1,086 ms	2,209.5 ms	9,462.18 ms
Google AI Studiogoogle-ai-studio/flex	824 ms	1,378.5 ms	1,911.2 ms	2,906.86 ms

Output throughput · tokens per second

Throughput distributionRolling 30-minute snapshot · 3 endpoints

P50P75P90P99

Google AI Studiogoogle-ai-studio/priority

80–162.48 t/s

Google AI Studiogoogle-ai-studio

90–413 t/s

Google AI Studiogoogle-ai-studio/flex

110–488.35 t/s

All throughput percentiles 3 endpoints

Endpoint	P50	P75	P90	P99
Google AI Studiogoogle-ai-studio/priority	80 t/s	91.5 t/s	126.4 t/s	162.48 t/s
Google AI Studiogoogle-ai-studio	90 t/s	162 t/s	261 t/s	413 t/s
Google AI Studiogoogle-ai-studio/flex	110 t/s	174.25 t/s	400 t/s	488.35 t/s

Percentiles describe the observed request distribution. These are snapshots of a rolling window, not a historical time series.

Uptime

Compare successful request rates across the latest 5-minute, 30-minute, and 24-hour observations.

Successful requests by window

Availability by endpointCurrent overlapping windows · 3 endpoints

Endpoint5 minutes30 minutes24 hours

Google AI Studiogoogle-ai-studio/priorityObserved Oct 10, 2026, 11:31 AM UTC

—

100%

Google AI Studiogoogle-ai-studioObserved Oct 10, 2026, 11:31 AM UTC

100%

Google AI Studiogoogle-ai-studio/flexObserved Oct 10, 2026, 11:31 AM UTC

100%

Reported by OpenRouter at the time of collection; rate-limited requests are excluded. A dash means no measurement was reported. This is not a live availability check.

Benchmarks

Review attributed evaluation results on each source's original scale.

External evaluations

google/gemini-3.1-flash-lite-previewObserved Oct 10, 2026, 11:31 AM UTC

Benchmark profileArtificial Analysis · shared source scale from 0 to 40

Coding

34.7

Agentic

1.6

Intelligence

15.6

Design Arena	Category	Elo	Win rate	Rank
models	3d	1,053	38.8%	98
models	asciiart	1,171	50.7%	30
models	codecategories	1,076	36.5%	100
models	dataviz	1,048	33.3%	104
models	gamedev	1,036	33.7%	108
models	svg	1,051	42.5%	71
models	uicomponent	1,075	37.7%	96
models	website	1,087	36.6%	104

Sources: Artificial Analysis and Design Arena, via OpenRouter. Scores retain their original scales and are not OpenAI Suite ratings.

Detailed evaluations

Evaluation	Configuration	Source	Results	Details
models · asciiart	Gemini 3.1 Flash-Lite Previewgoogle/gemini-3.1-flash-lite-preview-20260303	Design Arena	1,167 Elo	Details
models · dataviz	Gemini 3.1 Flash-Lite Previewgoogle/gemini-3.1-flash-lite-preview-20260303	Design Arena	1,045 Elo	Details
models · uicomponent	Gemini 3.1 Flash-Lite Previewgoogle/gemini-3.1-flash-lite-preview-20260303	Design Arena	1,069 Elo	Details
models · gamedev	Gemini 3.1 Flash-Lite Previewgoogle/gemini-3.1-flash-lite-preview-20260303	Design Arena	1,029 Elo	Details
Composite indices	Gemini 3.1 Flash-Litegoogle/gemini-3.1-flash-lite-preview-20260303	Artificial Analysis	Intelligence 15.6 · Coding 34.7 · Agentic 1.6	Details
models · 3d	Gemini 3.1 Flash-Lite Previewgoogle/gemini-3.1-flash-lite-preview-20260303	Design Arena	1,048 Elo	Details
models · codecategories	Gemini 3.1 Flash-Lite Previewgoogle/gemini-3.1-flash-lite-preview-20260303	Design Arena	1,072 Elo	Details
models · svg	Gemini 3.1 Flash-Lite Previewgoogle/gemini-3.1-flash-lite-preview-20260303	Design Arena	1,053 Elo	Details
models · website	Gemini 3.1 Flash-Lite Previewgoogle/gemini-3.1-flash-lite-preview-20260303	Design Arena	1,083 Elo	Details

Sources: Artificial Analysis, Design Arena and OpenRouter. Evaluation configurations and scales differ; results are not interchangeable. Updated Oct 24, 2026.

Apps & session costs

Compare observed median session costs for applications using this model, grouped by conversation length.

30-day sample · through Oct 18, 2026

Application	Model route	Turns	Median cost / session	Details
Hermes Agent	google/gemini-3.1-flash-lite-preview-20260303	2–9 turns	$0.008824	Details

Source: OpenRouter, as of Oct 20, 2026. Published under CC BY 4.0. These are observed costs per session, not token prices or a forecast for your workload. Apps are compared separately.

Technical details & API

Explore specifications, supported parameters, reasoning controls, and API identifiers for each OpenRouter route.

Current route specifications

google/gemini-3.1-flash-lite-previewObserved Oct 10, 2026, 11:31 AM UTC

Context: 1,048,576
Maximum output: 65,536
Tokenizer: Gemini
Input: text, image, video, file, audio
Output: text
Moderation: No
Added to OpenRouter: 2026-03-03

Base URLhttps://openrouter.ai/api/v1

Model IDgoogle/gemini-3.1-flash-lite-preview

Version IDgoogle/gemini-3.1-flash-lite-preview-20260303

Reasoning

Required: No
Enabled by default: Yes
Default effort: minimal
Supported efforts: high, medium, low, minimal

Supported parameters

include_reasoning
max_tokens
reasoning
reasoning_effort
response_format
seed
structured_outputs
temperature
tool_choice
tools
top_p

Frequently asked questions

Answers based on the model metadata and serving offers currently in the catalog.

How much does Gemini 3.1 Flash Lite Preview cost?

Listed rates start at $0.125 per million input tokens and $0.75 per million output tokens. Prices vary by provider and configuration; see Pricing for details.

Which providers offer Gemini 3.1 Flash Lite Preview?

There are 12 cataloged offers across 10 providers. Compare model IDs, prices and limits in Providers.

What is the context window?

The cataloged model context is 1,048,576 tokens. Each serving endpoint may apply a different limit.

Does it support tools and structured output?

Tool calling: Not reported. Structured output: Not reported. Support can vary by endpoint.

Catalog history · 3 recorded revisions

Metadata observations since this model was first cataloged. These are not model release versions.

Oct 20, 2026 · 2205d28db013
Sep 14, 2026 · c2854a9d827b
Sep 12, 2026 · 771b3bf85623