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Gemini 3.1 Flash-Lite

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

Frontier-class performance rivaling larger models at a fraction of the cost.

Open in Graph
data quality67

Updated 4 h ago · first seen 11 Sept 2026

model_01M293V7T8NW5KEYH4YE4G9N41

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 recordedofficial_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-litegoogle/gemini-3.1-flash-liteIdentifiers under which providers and evaluators refer to this model.
Folded evaluation variants
0Effort / thinking variants (…-high, …-non-reasoning) are result configurations of this model, not separate models. Their old URLs redirect here.

Openness

Openness not classified yet — no sourced evidence to place this model in the ontology.

Key facts

Release date

Source:OpenRouter public model & pricing listingT2observed 13 h agomedium

Status

Source:Google AI for Developers (Gemini API docs)T1observed 14 h agohigh

API model id

Source:Google AI for Developers (Gemini API docs)T1observed 14 h agohigh

Openrouter id

Source:OpenRouter public model & pricing listingT2observed 13 h agomedium

Architecture

Tokenizer

Source:OpenRouter public model & pricing listingT2observed 13 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 14 h agohigh

Max output

Source:Google AI for Developers (Gemini API docs)T1observed 14 h agohigh

Tokenizer

Source:OpenRouter public model & pricing listingT2observed 13 h agomedium

Providers & Pricing5

All offers in the price terminal →
Provider deployments, cheapest output first
ProviderContextInput / 1MCached inCache writeOutput / 1MBatch in / outPer image / requestNative unitsStatusObservedSource
Google Gemini APIcheapest outputgoogle/gemini-3.1-flash-lite:batch1.05Mout 65.5K$0.013——$0 / ——active4 h agosince 11 Sept 2026openrouter.aiT2
OpenRoutergoogle/gemini-3.1-flash-lite:batch1.05Mout 65.5K$0.013——$0 / ——active2 h agosince 12 Sept 2026openrouter.aiT2
Google Gemini APIgemini-3.1-flash-lite—$0.025—$0.125 / $0.75—flex_input_per_mtok=0.125audio_input_per_mtok=0.5flex_output_per_mtok=0.75+4active2 h agosince 11 Sept 2026ai.google.devT1
Google Gemini APIgoogle/gemini-3.1-flash-lite1.05Mout 65.5K$0.025$0.083—$0 / ——active4 h agosince 11 Sept 2026openrouter.aiT2
OpenRoutergoogle/gemini-3.1-flash-lite1.05Mout 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$0$0.50$1$1.5$2Sept 26Sept 26Sept 26Sept 26Google Gemini API: first observed → $1.5 · 11 Sept 2026Google Gemini API: $1.5 → $0.75 · 11 Sept 2026OpenRouter: first observed → $1.5 · 12 Sept 2026OpenRouter: $1.5 → $0.75 · 12 Sept 2026
  • Google Gemini API
  • OpenRouter
  • OpenRouter$1.5 → $0.7512 Sept 2026
  • OpenRouterfirst observed $1.512 Sept 2026
  • Google Gemini API$1.5 → $0.7511 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$0$0.10$0.20$0.30Sept 26Sept 26Sept 26Sept 26Google Gemini API: first observed → $0.25 · 11 Sept 2026Google Gemini API: $0.25 → $0.125 · 11 Sept 2026OpenRouter: first observed → $0.25 · 12 Sept 2026OpenRouter: $0.25 → $0.125 · 12 Sept 2026
  • Google Gemini API
  • OpenRouter
  • OpenRouter$0.25 → $0.12512 Sept 2026
  • OpenRouterfirst observed $0.2512 Sept 2026
  • Google Gemini API$0.25 → $0.12511 Sept 2026
  • Google Gemini APIfirst observed $0.2511 Sept 2026

Versions & Artifacts0

Version history

Context windowfirst observation only

11 Sept 2026current

Max outputfirst observation only

11 Sept 2026current

Statusfirst 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.

Timeline4

Full timeline →
  • Listed by providerModelGemini 3.1 Flash-LiteGoogle

    OpenRouter lists Gemini 3.1 Flash-Lite at $0.125 in / $0.75 out per 1M tokens

    openrouter
    openrouter.ai
  • Listed by providerModelGemini 3.1 Flash-LiteGoogle

    OpenRouter lists Gemini 3.1 Flash-Lite at $0.25 in / $1.5 out per 1M tokens

    openrouter
    openrouter.ai
  • Capabilities changedModelGemini 3.1 Flash-LiteGoogle

    Gemini 3.1 Flash-Lite: capabilities changed from ["Caching", "Code execution", "File search", "Function ca… to ["caching", "code_execution", "file_search", "function_ca…

    CapabilitiesCaching, Code execution, File search, Function calling, Grounding with Google Maps, Search grounding, Structured outputs, Thinking, URL context→caching, code_execution, file_search, function_calling, maps_grounding, reasoning, search_grounding, structured_output, url_contextgoogle
    ai.google.dev
  • Property changedModelGemini 3.1 Flash-LiteGoogle

    Gemini 3.1 Flash-Lite: family changed from Gemini to Gemini 3.1

    FamilyGemini→Gemini 3.1google
    ai.google.dev

Change history41

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 Aug 2026 — attributes exactly as the atlas knew them on that day; later corrections are not shown.

Back to today →

Gemini 3.1 Flash-Lite was not yet in AI Atlas on 12 Aug 2026

First seen 11 Sept 2026. Nothing is inferred backwards: no attribute is shown for dates before the first observation.
41 claims · 25 properties14 conflicting

Familyfamily2

Claim history for Family
ValueValid from → toStatusSourceConfidenceExtractor
Gemini 3.1 → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic
Gemini → supersededGoogle AI for Developers (Gemini API docs)T1highdeterministic

Release daterelease_date1

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

Statusstatus1

Claim history for Status
ValueValid from → toStatusSourceConfidenceExtractor
active → 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

Modalitiesmodalities8conflicting claims

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

Input modalitiesmodalities_input8conflicting claims

Claim history for Input modalities
ValueValid from → toStatusSourceConfidenceExtractor
audio, image, text, video → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
audio, image, text, video → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
audio, image, text, video → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
audio, image, text, video → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
audio, image, text, video → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
audio, image, text, video → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
audio, image, text, video → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
audio, document, image, text, video → 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 → 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 → 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

Capabilitiescapabilities2

Claim history for Capabilities
ValueValid from → toStatusSourceConfidenceExtractor
caching, code_execution, file_search, function_calling, maps_grounding, reasoning, search_grounding, structured_output, url_context → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic
Caching, Code execution, File search, Function calling, Grounding with Google Maps, Search grounding, Structured outputs, Thinking, URL context → supersededGoogle AI for Developers (Gemini API docs)T1highdeterministic

Capabilities rawcapabilities_raw1

Claim history for Capabilities raw
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
Frontier-class performance rivaling larger models at a fraction of the cost. → 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
2026-05 → 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 → currentcurrentOpenRouter public model & pricing listingT2mediumdeterministic

Openrouter listed atopenrouter_listed_at1

Claim history for Openrouter listed at
ValueValid from → toStatusSourceConfidenceExtractor
7 May 2026 → 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, stop, 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

Versionsversions1

Claim history for Versions
ValueValid from → toStatusSourceConfidenceExtractor
{"stable":["gemini-3.1-flash-lite"]} → 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

25

Source tiers

T1T219 / 6

Freshest observation

4 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 model_pageT1· Official2 h ago21
Google AI for Developers (Gemini API docs)ai.google.dev/gemini-api/docs/models model_docsT1· Official2 h ago21
Google AI for Developers (Gemini API docs)ai.google.dev/gemini-api/docs/pricing pricingT1· Official2 h ago21
OpenRouter public model & pricing listingopenrouter.ai/api/v1/models catalogueT2· Quality secondary2 h ago9

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

Data quality (67/100) measures how well AI Atlas knows this entity — completeness, primary-source ratio, freshness, conflicts — never how good the model is. Methodology →