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AI Atlas
ModelRetiredClosed / proprietary

Gemini 3.1 Flash-Lite Preview

Googlefamily · Gemini 3.1ai.google.dev/gemini-api/docs/models/gemini-3.1-

Our most cost-efficient multimodal model, offering the fastest performance for high-frequency, lightweight tasks.

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data quality75

Updated 2 h ago · first seen 11 Sept 2026

model_01M293VBT564STN5728B9ZTBGA

Overview

Identity

Canonical model
Yesidentity confidence: highOne row per real model release. Artifacts (checkpoints, quantisations, conversions) and folded evaluation variants point here.
Official checkpoints
None recorded — closed weightsofficial_checkpoints = hf_repo identifiers carried by the model itself; artifacts are separate entities pointing here through canonical_id.
Artifacts
None recordedSeparate entities (checkpoint · quantization · conversion · packaging) pointing to this model through canonical_id.
Provider deployments
2
API aliases
gemini-3-1-flash-lite-previewgemini-3.1-flash-lite-previewgoogle/gemini-3.1-flash-lite-previewIdentifiers under which providers and evaluators refer to this model.
Folded evaluation variants
1Effort / thinking variants (…-high, …-non-reasoning) are result configurations of this model, not separate models. Their old URLs redirect here.

Openness

Closed / proprietary— weights not available; 7 dimensions unknown.

Weights are not available; the model is reachable only through an API or a product.

  • Weights

    No

  • Inference code

    —

  • Training code

    —

  • Training data

    —

  • Dataset

    —

  • Commercial use

    —

  • Redistribution

    —

  • Derivatives

    —

dimensions marked null are unknown, not false

Key facts

Release date

Source:OpenRouter public model & pricing listingT2observed 12 h agomedium

Status

Source:Google AI for Developers (Gemini API docs)T1observed 2 h agohigh

API model id

Source:Google AI for Developers (Gemini API docs)T1observed 12 h agohigh

Openrouter id

Source:OpenRouter public model & pricing listingT2observed 12 h agomedium

Architecture

Tokenizer

Source:OpenRouter public model & pricing listingT2observed 12 h agomedium

Capabilities

Modalities

Modalities
audiodocumentimagetextvideo
Input
audiodocumentimagetextvideo
Output
text

Capabilities

  • Tool calling

    Yes

    Google AI for Developers (Gemini API docs) · T1

  • Structured output

    Yes

    Google AI for Developers (Gemini API docs) · T1

  • Reasoning

    Yes

    Google AI for Developers (Gemini API docs) · T1

  • Vision

    Yes

    Google AI for Developers (Gemini API docs) · T1

  • Audio

    Yes

    Google AI for Developers (Gemini API docs) · T1

  • Fine-tuning available

    Unavailable

Context window

Source:Google AI for Developers (Gemini API docs)T1observed 2 h agohigh

Max output

Source:Google AI for Developers (Gemini API docs)T1observed 12 h agohigh

Tokenizer

Source:OpenRouter public model & pricing listingT2observed 12 h agomedium

Benchmarks20

Compare with another model →

Comparable same task and conditions · Partially comparable same task, conditions differ (effort, temperature, judge) · Not comparable different variant or metric

Benchmark results grouped by comparability group
Benchmark · groupBest scoreTrustConfigurationResultsvs leaderEvaluatedSource
Terminal-Benchagentic · accuracy · variant=v2.1 · evaluator=Artificial AnalysisIndependentevaluatorArtificial Analysisvariantv2.1reasoningonconditions differ across rows → partially comparable2non-primary groupobs. 12 Sept 2026artificialanalysis.aiT2
Terminal-Benchagentic · accuracy · variant=hard · evaluator=Artificial AnalysisIndependentevaluatorArtificial Analysisvarianthardreasoningonconditions differ across rows → partially comparable2−41.7 ptvs gpt-5.6-solobs. 12 Sept 2026artificialanalysis.aiT2
Terminal-Benchagentic · accuracy · variant=v4.0 · evaluator=Artificial AnalysisIndependentevaluatorArtificial Analysisvariantv4.0reasoningonconditions differ across rows → partially comparable2non-primary groupobs. 12 Sept 2026artificialanalysis.aiT2
τ²-benchagentic · pass^1 · variant=Telecom · evaluator=Artificial AnalysisIndependentevaluatorArtificial AnalysisvariantTelecomreasoningonconditions differ across rows → partially comparable1non-primary groupobs. 12 Sept 2026artificialanalysis.aiT2
τ²-benchagentic · pass^1 · evaluator=Artificial AnalysisIndependentevaluatorArtificial Analysis1−67.8 ptvs Z.ai GLM 5.2obs. 11 Sept 2026artificialanalysis.aiT2
SciCodecoding · accuracy · evaluator=Artificial AnalysisIndependentevaluatorArtificial Analysisreasoningonconditions differ across rows → partially comparable2−19.7 ptvs Claude Fable 5.1obs. 12 Sept 2026artificialanalysis.aiT2
Artificial Analysis Intelligence Indexcomposite · indexIndependentreasoningonversion4.3conditions differ across rows → partially comparable2−37.3vs Claude Fable 5.1obs. 12 Sept 2026artificialanalysis.aiT2
IFBenchinstruction-following · accuracy · evaluator=Artificial AnalysisIndependentevaluatorArtificial Analysisreasoningonconditions differ across rows → partially comparable2−6.12 ptvs Grok 4.3obs. 12 Sept 2026artificialanalysis.aiT2
Humanity's Last Examknowledge · accuracy · evaluator=Artificial AnalysisIndependentevaluatorArtificial Analysisreasoningonconditions differ across rows → partially comparable2−41.9 ptvs Claude Fable 5.1obs. 12 Sept 2026artificialanalysis.aiT2
MMMU-Promultimodal · accuracy · evaluator=Artificial AnalysisIndependentevaluatorArtificial Analysisreasoningonconditions differ across rows → partially comparable2−11.3 ptvs gpt-6-astraobs. 12 Sept 2026artificialanalysis.aiT2
GPQA Diamondreasoning · accuracy · variant=Diamond · evaluator=Artificial AnalysisIndependentevaluatorArtificial AnalysisvariantDiamondreasoningonconditions differ across rows → partially comparable1non-primary groupobs. 12 Sept 2026artificialanalysis.aiT2
GPQA Diamondreasoning · accuracy · variant=GPQA Diamond · evaluator=Artificial AnalysisIndependentevaluatorArtificial AnalysisvariantGPQA Diamond1−14.0 ptvs gpt-6-astraobs. 11 Sept 2026artificialanalysis.aiT2

Current rows only, grouped by benchmark → canonical metric → comparability group (task configuration). Effort variants folded into this model appear as rows of the same group. 20 current rows in total. “vs leader” compares with the current leader of the benchmark's primary group only; other groups are not directly comparable. Comparability rules →

Providers & Pricing2

All offers in the price terminal →
Provider deployments, cheapest output first
ProviderContextInput / 1MCached inCache writeOutput / 1MPer image / requestStatusObservedSource
Google Gemini APIcheapest outputgoogle/gemini-3.1-flash-lite-preview1.05Mout 65.5K$0.025$0.083$0 / —active3 h agosince 11 Sept 2026openrouter.aiT2
OpenRoutergoogle/gemini-3.1-flash-lite-preview1.05Mout 65.5K$0.025$0.083$0 / —active2 h agosince 12 Sept 2026openrouter.aiT2

USD per 1M tokens as published by each provider; native units (per-request fees, flex/priority tiers) are kept verbatim. Rows are append-only — every price change is kept in the history below. Cost of a workload →

Price history

Step lines per provider; amber markers are recorded changes. Click a marker or a row for the evidence behind that price.

Output price · USD / 1M tokens 2 providers

Output price history of Gemini 3.1 Flash-Lite Preview$0$0.50$1$1.5$2Sept 26Sept 26Sept 26Sept 26Google Gemini API: first observed → $1.5 · 11 Sept 2026OpenRouter: first observed → $1.5 · 12 Sept 2026
  • Google Gemini API
  • OpenRouter
  • OpenRouterfirst observed $1.512 Sept 2026
  • Google Gemini APIfirst observed $1.511 Sept 2026

Input price · USD / 1M tokens 2 providers

Input price history of Gemini 3.1 Flash-Lite Preview$0$0.10$0.20$0.30Sept 26Sept 26Sept 26Sept 26Google Gemini API: first observed → $0.25 · 11 Sept 2026OpenRouter: first observed → $0.25 · 12 Sept 2026
  • Google Gemini API
  • OpenRouter
  • OpenRouterfirst observed $0.2512 Sept 2026
  • Google Gemini APIfirst observed $0.2511 Sept 2026

Versions & Artifacts0

Version history

Context window2 changes

11 Sept 2026→11 Sept 2026→12 Sept 2026current

Status2 changes

11 Sept 2026→11 Sept 2026→12 Sept 2026current

Max outputfirst observation only

11 Sept 2026current

Opennessfirst observation only

11 Sept 2026current

Each hop is a claim: click a value for its source, tier and observation time. Nothing is overwritten — a new observation closes the previous claim.

Artifacts 0

No artifact (checkpoint, quantisation, conversion or packaging) points to this model yet.

Timeline15

Full timeline →

Change history24

Temporal, append-only claims: a new observation closes the previous claim instead of overwriting it. Rewind the record with the as-of picker.

Viewing AI Atlas as of 12 Sept 2026 — attributes exactly as the atlas knew them on that day; later corrections are not shown.

Back to today →

Attributes as of 12 Sept 2026 30 claims in force

Family
Gemini 3.1
Release date
3 Mar 2026
Status
retired
Openness
proprietary
Context window
1.05M tokens
Max output
65.5K tokens
Modalities
audio, document, image, text, video
Input modalities
audio, document, image, text, video
Output modalities
text
Tokenizer
Gemini
API model id
gemini-3.1-flash-lite-preview
Aa context window
1,000,000
Aa deprecated
Yes
Aa openness
proprietary
Audio
Yes
Capabilities
caching, code_execution, file_search, function_calling, maps_grounding, reasoning, search_grounding, structured_output, url_context
Capabilities raw
Caching, Code execution, File search, Function calling, Grounding with Google Maps, Search grounding, Structured outputs, Thinking, URL context
File input
Yes
Latest update
2026-03
Aa median output tokens per second
316.6
Openrouter id
google/gemini-3.1-flash-lite-preview
Openrouter listed at
3 Mar 2026
Reasoning
Yes
Structured output
Yes
Supported parameters
include_reasoning, max_tokens, reasoning, reasoning_effort, response_format, seed, structured_outputs, temperature, tool_choice, tools, top_p
Tool calling
Yes
Vision
Yes
Weights available
No
24 claims · 22 properties2 conflicting

Familyfamily1

Claim history for Family
ValueValid from → toStatusSourceConfidenceExtractor
Gemini → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic

Release daterelease_date1

Claim history for Release date
ValueValid from → toStatusSourceConfidenceExtractor
3 Mar 2026 → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Statusstatus1

Claim history for Status
ValueValid from → toStatusSourceConfidenceExtractor
retired → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic

Context windowcontext_length1

Claim history for Context window
ValueValid from → toStatusSourceConfidenceExtractor
1.05M tokens → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic

Max outputmax_output_tokens1

Claim history for Max output
ValueValid from → toStatusSourceConfidenceExtractor
65.5K tokens → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic

Modalitiesmodalities2conflicting claims

Claim history for Modalities
ValueValid from → toStatusSourceConfidenceExtractor
audio, image, text, video → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
audio, image, pdf, text, video → currentcurrentGoogle AI for Developers (Gemini API docs)T1conflicteddeterministic

Input modalitiesmodalities_input2conflicting claims

Claim history for Input modalities
ValueValid from → toStatusSourceConfidenceExtractor
audio, image, text, video → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
text, image, video, audio, pdf → currentcurrentGoogle AI for Developers (Gemini API docs)T1conflicteddeterministic

Output modalitiesmodalities_output1

Claim history for Output modalities
ValueValid from → toStatusSourceConfidenceExtractor
text → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic

Tokenizertokenizer1

Claim history for Tokenizer
ValueValid from → toStatusSourceConfidenceExtractor
Gemini → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

API model idapi_model_id1

Claim history for API model id
ValueValid from → toStatusSourceConfidenceExtractor
gemini-3.1-flash-lite-preview → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic

Official pageofficial_url1

Claim history for Official page
ValueValid from → toStatusSourceConfidenceExtractor
https://ai.google.dev/gemini-api/docs/models/gemini-3.1-flash-lite-preview → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic

Audioaudio1

Claim history for Audio
ValueValid from → toStatusSourceConfidenceExtractor
Yes → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic

Capabilitiescapabilities1

Claim history for Capabilities
ValueValid from → toStatusSourceConfidenceExtractor
Caching, Code execution, File search, Function calling, Grounding with Google Maps, Search grounding, Structured outputs, Thinking, URL context → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic

Descriptiondescription1

Claim history for Description
ValueValid from → toStatusSourceConfidenceExtractor
Our most cost-efficient multimodal model, offering the fastest performance for high-frequency, lightweight tasks. → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic

File inputfile_input1

Claim history for File input
ValueValid from → toStatusSourceConfidenceExtractor
Yes → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Latest updatelatest_update1

Claim history for Latest update
ValueValid from → toStatusSourceConfidenceExtractor
2026-03 → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic

Openrouter idopenrouter_id1

Claim history for Openrouter id
ValueValid from → toStatusSourceConfidenceExtractor
google/gemini-3.1-flash-lite-preview → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Reasoningreasoning1

Claim history for Reasoning
ValueValid from → toStatusSourceConfidenceExtractor
Yes → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic

Structured outputstructured_output1

Claim history for Structured output
ValueValid from → toStatusSourceConfidenceExtractor
Yes → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic

Supported parameterssupported_parameters1

Claim history for Supported parameters
ValueValid from → toStatusSourceConfidenceExtractor
include_reasoning, max_tokens, reasoning, reasoning_effort, response_format, seed, structured_outputs, temperature, tool_choice, tools, top_p → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Tool callingtool_calling1

Claim history for Tool calling
ValueValid from → toStatusSourceConfidenceExtractor
Yes → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic

Visionvision1

Claim history for Vision
ValueValid from → toStatusSourceConfidenceExtractor
Yes → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic

Claims are temporal and append-only: a new observation closes the previous claim (valid_to) instead of overwriting it. Conflicting claims from different sources are kept side by side and flagged — never averaged. Methodology →

Provenance

Attributed facts

30

Source tiers

T1T218 / 12

Freshest observation

2 h ago

Conflicts

14 flagged

Source documents 4

Source documents
SourceDocumentTypeTierLast observedSnapshots
Google AI for Developers (Gemini API docs)ai.google.dev/gemini-api/docs/models/gemini-3.1-flash-lite-preview model_pageT1· Official1 h ago18
Google AI for Developers (Gemini API docs)ai.google.dev/gemini-api/docs/models model_docsT1· Official1 h ago20
OpenRouter public model & pricing listingopenrouter.ai/api/v1/models catalogueT2· Quality secondary2 h ago8
Artificial Analysisartificialanalysis.ai/leaderboards/models leaderboardT2· Quality secondary2 h ago2

Tier 1 = official/primary, 2 = quality secondary, 3 = community, 4 = unverified. Every snapshot is archived; see all sources and the methodology.

Data quality (75/100) measures how well AI Atlas knows this entity — completeness, primary-source ratio, freshness, conflicts — never how good the model is. Methodology →