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Models/Google

Gemini 3.1 Flash Lite

Gemini 3.1 Flash Lite is Google’s GA high-efficiency multimodal model optimized for low-latency, high-volume workloads. It supports text, image, video, audio, and PDF inputs, and is designed for lightweight agentic workflows, simple data extraction, and applications where responsiveness and API cost are the primary constraints.

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
Organization
Google
Family
gemini-flash-lite
Providers
25
Context
1,048,576
Output limit
65,536
Knowledge
2025-01
Release
2026-05-07
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.

37 offers · USD per million tokens
ProviderModel IDContextOutputInput / output · 1MReasoningToolsStructuredDetails
302.AI
gemini-3.1-flash-lite
1,048,57665,536— / ————
View
Abacus
gemini-3.1-flash-lite
1,048,57665,536— / ————
View
AIHubMix
gemini-3.1-flash-lite
1,048,57665,536— / ————
View
Cloudflare AI Gateway
google/gemini-3.1-flash-lite
1,000,00065,536— / ————
View
CommandCode
google/gemini-3.1-flash-lite
1,000,00065,536— / ————
View
Cortecs
gemini-3.1-flash-lite
1,048,57665,535— / ————
View
DevPass (LLM Gateway)
gemini-3.1-flash-lite
1,048,57665,536— / ————
View
Eden AI
vertex/gemini-3.1-flash-lite@eu
1,048,57665,536— / ————
View
Eden AI
vertex/gemini-3.1-flash-lite@us
1,048,57665,536— / ————
View
Eden AI
vertex/gemini-3.1-flash-lite
1,048,57665,536— / ————
View
Eden AI
google/gemini-3.1-flash-lite
1,048,57665,536— / ————
View
Impossibl
google/gemini-3.1-flash-lite
1,048,57665,536— / ————
View
Kenari
gemini-3-1-flash-lite
1,048,57665,536— / ————
View
Kilo Gateway
google/gemini-3.1-flash-lite
1,048,57665,536— / ————
View
LLM Gateway
google-ai-studio/gemini-3.1-flash-lite
1,048,57665,536— / ————
View
LLM Gateway
google-vertex/gemini-3.1-flash-lite
1,048,57665,536— / ————
View
Merge Gateway
google/gemini-3.1-flash-lite
1,048,57665,536— / ————
View
NanoGPT
google/gemini-3.1-flash-lite
1,048,57665,536— / ————
View
NEAR AI Cloud
google/gemini-3.1-flash-lite
1,048,57665,536— / ————
View
Ofox
google/gemini-3.1-flash-lite
1,048,57665,536— / ————
View
Googlevia OpenRouter
google/gemini-3.1-flash-lite
unknown		1,048,57665,536$0.125 / $0.75YesYesYes
View
Googlevia OpenRouter
google/gemini-3.1-flash-lite
unknown		1,048,57665,536$0.275 / $1.65YesYesYes
View
Googlevia OpenRouter
google/gemini-3.1-flash-lite
unknown		1,048,57665,536$0.25 / $1.50YesYesYes
View
Googlevia OpenRouter
google/gemini-3.1-flash-lite
unknown		1,048,57665,536$0.275 / $1.65YesYesYes
View
Googlevia OpenRouter
google/gemini-3.1-flash-lite
unknown		1,048,57665,536$0.45 / $2.70YesYesYes
View
Google AI Studiovia OpenRouter
google/gemini-3.1-flash-lite
unknown		1,048,57665,536$0.125 / $0.75YesYesYes
View
Google AI Studiovia OpenRouter
google/gemini-3.1-flash-lite
unknown		1,048,57665,536$0.45 / $2.70YesYesYes
View
Google AI Studiovia OpenRouter
google/gemini-3.1-flash-lite
unknown		1,048,57665,536$0.25 / $1.50YesYesYes
View
OrcaRouter
google/gemini-3.1-flash-lite
1,048,57665,536— / ————
View
Poe
google/gemini-3.1-flash-lite
1,048,57665,536— / ————
View
Requesty
gemini-3.1-flash-lite
1,048,57665,535— / ————
View
Requesty
gemini-3.1-flash-lite@eu
1,048,57665,535— / ————
View
SAP AI Core
gemini-3.1-flash-lite
1,048,57665,536— / ————
View
Tempr Gateway
google/gemini-3.1-flash-lite
1,048,57665,536— / ————
View
Vercel AI Gateway
google/gemini-3.1-flash-lite
1,000,00065,000— / ————
View
Vertex
gemini-3.1-flash-lite
1,048,57665,536— / ————
View
ZenMux
google/gemini-3.1-flash-lite
1,048,57665,536— / ————
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 offers37Across 25 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 · 8 lowest-priced configurations
InputOutput
Googlegoogle-vertex/global/flex
$0.125$0.75
Google AI Studiogoogle-ai-studio/flex
$0.125$0.75
Googlegoogle-vertex/global
$0.25$1.50
Google AI Studiogoogle-ai-studio
$0.25$1.50
Googlegoogle-vertex/us
$0.275$1.65
Googlegoogle-vertex/eu
$0.275$1.65
Googlegoogle-vertex/global/priority
$0.45$2.70
Google AI Studiogoogle-ai-studio/priority
$0.45$2.70
google/gemini-3.1-flash-liteObserved
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
EndpointInput / 1MOutput / 1MCache read / 1MCache write / 1M
Googlegoogle-vertex/global/flex$0.125$0.75$0.0125$0.041667
Googlegoogle-vertex/us$0.275$1.65$0.0275$0.083333
Googlegoogle-vertex/global$0.25$1.50$0.025$0.083333
Googlegoogle-vertex/eu$0.275$1.65$0.0275$0.083333
Googlegoogle-vertex/global/priority$0.45$2.70$0.045$0.15
Google AI Studiogoogle-ai-studio/flex$0.125$0.75$0.0125$0.041667
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

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 · 6 endpoints
P50P75P90P99
Googlegoogle-vertex/global/flex
16,142–48,070.92 ms
Googlegoogle-vertex/us
715.5–1,239.85 ms
Googlegoogle-vertex/global
770–4,022.43 ms
Googlegoogle-vertex/eu
1,474.5–2,330.61 ms
Googlegoogle-vertex/global/priority
1,091–1,739 ms
Google AI Studiogoogle-ai-studio/flex
798–4,492.07 ms
All latency percentiles 8 endpoints
EndpointP50P75P90P99
Googlegoogle-vertex/global/flex16,142 ms18,205 ms22,979 ms48,070.92 ms
Googlegoogle-vertex/us715.5 ms978.5 ms1,157.5 ms1,239.85 ms
Googlegoogle-vertex/global770 ms1,160 ms1,607.9 ms4,022.43 ms
Googlegoogle-vertex/eu1,474.5 ms1,631 ms1,865 ms2,330.61 ms
Googlegoogle-vertex/global/priority1,091 ms1,192 ms1,320.5 ms1,739 ms
Google AI Studiogoogle-ai-studio/flex798 ms1,680.25 ms2,037.9 ms4,492.07 ms
Google AI Studiogoogle-ai-studio/priority796 ms936 ms1,114.6 ms2,107.56 ms
Google AI Studiogoogle-ai-studio763 ms1,138 ms1,706 ms8,103.62 ms

Output throughput · tokens per second

Throughput distributionRolling 30-minute snapshot · 6 endpoints
P50P75P90P99
Googlegoogle-vertex/global/flex
7–68 t/s
Googlegoogle-vertex/us
188–191.92 t/s
Googlegoogle-vertex/global
102–347 t/s
Googlegoogle-vertex/eu
228–410 t/s
Googlegoogle-vertex/global/priority
108–271.57 t/s
Google AI Studiogoogle-ai-studio/flex
75–300.09 t/s
All throughput percentiles 8 endpoints
EndpointP50P75P90P99
Googlegoogle-vertex/global/flex7 t/s9 t/s17 t/s68 t/s
Googlegoogle-vertex/us188 t/s190 t/s191.2 t/s191.92 t/s
Googlegoogle-vertex/global102 t/s169 t/s235 t/s347 t/s
Googlegoogle-vertex/eu228 t/s270 t/s310 t/s410 t/s
Googlegoogle-vertex/global/priority108 t/s127 t/s165 t/s271.57 t/s
Google AI Studiogoogle-ai-studio/flex75 t/s96 t/s165 t/s300.09 t/s
Google AI Studiogoogle-ai-studio/priority156.5 t/s187 t/s272.7 t/s471.79 t/s
Google AI Studiogoogle-ai-studio121 t/s159 t/s235 t/s357.09 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 · 8 endpoints
Endpoint5 minutes30 minutes24 hours
Googlegoogle-vertex/global/flex
Googlegoogle-vertex/us
Googlegoogle-vertex/global
Googlegoogle-vertex/eu
Googlegoogle-vertex/global/priority
Google AI Studiogoogle-ai-studio/flex
Google AI Studiogoogle-ai-studio/priority
Google AI Studiogoogle-ai-studio

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

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

Detailed evaluations

Evaluation scoresAccuracy or item F1 · higher is better
tau bench verified airlineGoogle: Gemini 3.1 Flash Lite
72%
gpqa diamondGoogle: Gemini 3.1 Flash Lite
81.594%
EvaluationConfigurationSourceResultsDetails
tau bench verified airlineGoogle: Gemini 3.1 Flash Litegoogle/gemini-3.1-flash-lite-20260507OpenRouter72%
Details
gpqa diamondGoogle: Gemini 3.1 Flash Litegoogle/gemini-3.1-flash-lite-20260507OpenRouter81.594%
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
ApplicationModel routeTurnsMedian cost / sessionDetails
Hermes Agentgoogle/gemini-3.1-flash-lite-202605072–9 turns
$0.005677
Details
Hermes Agentgoogle/gemini-3.1-flash-lite-2026050710–49 turns
$0.028301
Details
Hermes Agentgoogle/gemini-3.1-flash-lite-202605071 turn
$0.000966
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.

Activity

Daily prompt and completion tokens reported for this model's routes in OpenRouter's top 50. Missing days have no published value.

Last 90 complete UTC days
Daily token usage6,120,195,352,906 reported tokens · 89 days with observations
Jul 26, 2026Oct 23, 2026
Daily observations · 89 days
Date (UTC)Reported tokensReported routes
Oct 23, 202682,205,585,3461
Oct 22, 202686,267,370,1701
Oct 21, 202686,736,056,0541
Oct 20, 202682,760,460,6891
Oct 19, 202672,990,608,8151
Oct 18, 202649,854,079,4831
Oct 17, 202650,361,837,4191
Oct 16, 202673,075,833,0121
Oct 15, 202677,701,783,5431
Oct 14, 202672,285,979,8901
Oct 13, 202678,311,774,1481
Oct 12, 202666,205,737,7121
Oct 11, 202649,724,475,3481
Oct 10, 202652,441,282,5901
Oct 9, 202672,238,496,7081
Oct 8, 202669,522,973,9371
Oct 7, 202673,671,127,1351
Oct 6, 202678,117,737,6471
Oct 5, 202675,038,685,3351
Oct 4, 202656,076,776,0201
Oct 3, 202659,272,111,1081
Oct 2, 202669,290,882,4341
Oct 1, 202673,675,351,1121
Sep 30, 202680,410,172,9721
Sep 29, 202685,443,010,1991
Sep 28, 202681,560,155,5901
Sep 27, 202653,404,851,6271
Sep 26, 202657,976,742,3711
Sep 25, 202683,867,637,4021
Sep 24, 202686,358,795,3501
Sep 23, 202686,680,884,7911
Sep 22, 202681,580,602,4121
Sep 21, 202678,438,111,8271
Sep 20, 202652,598,058,3641
Sep 19, 202650,812,222,8361
Sep 18, 202677,764,017,3681
Sep 17, 202681,004,414,4471
Sep 16, 202678,634,508,8891
Sep 15, 202677,176,920,6881
Sep 14, 202676,713,260,6721
Sep 13, 202649,484,885,6921
Sep 12, 202651,910,169,3971
Sep 11, 202665,368,249,4641
Sep 10, 202673,499,374,4831
Sep 9, 202671,718,093,9561
Sep 8, 202689,362,465,4851
Sep 7, 202660,480,836,1581
Sep 6, 202649,007,674,3041
Sep 5, 202649,941,160,6471
Sep 4, 202665,042,924,4141
Sep 3, 202670,335,558,6001
Sep 2, 202674,224,251,6141
Sep 1, 202670,537,972,3961
Aug 31, 202665,556,094,6821
Aug 30, 202646,221,382,1581
Aug 29, 202649,653,009,9811
Aug 28, 202664,129,595,2811
Aug 27, 202675,768,610,3801
Aug 26, 202673,359,400,8271
Aug 25, 202676,152,424,7521
Aug 24, 202674,344,855,2471
Aug 23, 202644,670,107,2651
Aug 22, 202646,544,665,1611
Aug 21, 202668,583,110,7331
Aug 20, 202665,780,568,5901
Aug 19, 202673,778,771,6611
Aug 18, 202672,235,243,2281
Aug 17, 202664,099,739,3741
Aug 16, 202639,769,813,1651
Aug 15, 202643,402,618,8521
Aug 14, 202667,625,814,7251
Aug 13, 202668,402,228,1221
Aug 12, 202666,420,565,7501
Aug 11, 202669,476,642,1141
Aug 10, 202662,925,370,3451
Aug 9, 202640,631,900,2141
Aug 8, 202651,235,471,1781
Aug 7, 202666,056,387,6111
Aug 6, 202670,424,964,5651
Aug 5, 202675,563,429,9091
Aug 4, 202680,015,317,6451
Aug 3, 202681,369,729,1051
Aug 2, 202652,970,948,7971
Aug 1, 202649,802,148,9061
Jul 31, 202686,594,183,7511
Jul 30, 202692,116,123,8761
Jul 29, 202692,108,209,5901
Jul 28, 202691,235,661,9031
Jul 27, 202692,005,253,3931

Source: OpenRouter (openrouter.ai/rankings), as of Oct 24, 2026. CC BY 4.0. Totals include only individually published routes. Tokenizers differ by provider; the aggregated “other” category is never assigned to a model.

Technical details & API

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

Current route specifications
google/gemini-3.1-flash-liteObserved
Context
1,048,576
Maximum output
65,536
Tokenizer
Gemini
Input
text, image, video, file, audio
Output
text
Moderation
No
Added to OpenRouter
2026-05-07
Base URLhttps://openrouter.ai/api/v1
Model IDgoogle/gemini-3.1-flash-lite
Version IDgoogle/gemini-3.1-flash-lite-20260507

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
  • stop
  • 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 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?

There are 37 cataloged offers across 25 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.

  • · cf1c7fb57d00
  • · 2a8394b713e4
  • · 29104d169e56