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.
Updated 3 h ago · first seen 11 Sept 2026
model_01M293VBT564STN5728B9ZTBGA
Overview
Identity
- Canonical model
- Yesidentity confidence: mediumOne 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 13 h agomedium
- Status
Source:Google AI for Developers (Gemini API docs)T1observed 4 h agohigh
- Official page
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 4 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
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
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 →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
Output price · USD / 1M tokens 2 providers
- 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
- 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 →OpenRouter lists Gemini 3.1 Flash-Lite Preview at $0.25 in / $1.5 out per 1M tokens
openrouterGemini 3.1 Flash-Lite Preview scores 24.24% on Terminal-Bench
artificial_analysisGemini 3.1 Flash-Lite Preview scores 31.09% on Terminal-Bench
artificial_analysisGemini 3.1 Flash-Lite Preview scores 0.51% on Terminal-Bench
artificial_analysisGemini 3.1 Flash-Lite Preview scores 31.29% on τ²-bench
artificial_analysisGemini 3.1 Flash-Lite Preview scores 75.55% on MMMU-Pro
artificial_analysisGemini 3.1 Flash-Lite Preview scores 77.21% on IFBench
artificial_analysisGemini 3.1 Flash-Lite Preview scores 43.4% on SciCode
artificial_analysisGemini 3.1 Flash-Lite Preview scores 17.19% on Humanity's Last Exam
artificial_analysisGemini 3.1 Flash-Lite Preview scores 82.22% on GPQA Diamond
artificial_analysisGemini 3.1 Flash-Lite Preview scores 16.03 on Artificial Analysis Intelligence Index
artificial_analysisGemini 3.1 Flash-Lite Preview: 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_contextgoogleGemini 3.1 Flash-Lite Preview: context length changed from 1000000 to 1048576
Context window1M tokens→1.05M tokensgoogleGemini 3.1 Flash-Lite Preview: status changed from deprecated to retired
Statusdeprecated→retiredgoogleGemini 3.1 Flash-Lite Preview: family changed from Gemini to Gemini 3.1
FamilyGemini→Gemini 3.1google
Change history52
Viewing AI Atlas as of 5 Sept 2026 — attributes exactly as the atlas knew them on that day; later corrections are not shown.
Back to today →Gemini 3.1 Flash-Lite Preview was not yet in AI Atlas on 5 Sept 2026
Familyfamily2
Release daterelease_date1
Statusstatus3
Opennessopenness1
Context windowcontext_length3
Max outputmax_output_tokens1
Modalitiesmodalities8conflicting claims
Input modalitiesmodalities_input8conflicting claims
Output modalitiesmodalities_output1
Tokenizertokenizer1
API model idapi_model_id1
Official pageofficial_url1
Aa context windowaa_context_window1
Aa deprecatedaa_deprecated1
Aa opennessaa_openness1
Audioaudio1
Capabilitiescapabilities2
Capabilities rawcapabilities_raw1
Descriptiondescription1
File inputfile_input1
Latest updatelatest_update1
Aa median output tokens per secondmetric.aa_median_output_tokens_per_second2
Openrouter idopenrouter_id1
Openrouter listed atopenrouter_listed_at1
Reasoningreasoning2
Structured outputstructured_output1
Supported parameterssupported_parameters1
Tool callingtool_calling1
Visionvision1
Weights availableweights_available1
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
3 h ago
Conflicts
14 flagged
Source documents 4
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 →