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Gemini 3.1 Flash Image (Nano Banana 2)

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

High-efficiency production-scale visual creation, combining the intelligence of the Gemini 3 series with lightning-fast generation speeds.

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data quality62

Updated 31 min ago · first seen 11 Sept 2026

model_01M293V7TTW1QKGN73X8MD8PXM

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-imagegoogle/gemini-3.1-flash-imageIdentifiers 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 12 h agomedium

Status

Source:Google AI for Developers (Gemini API docs)T1observed 12 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
documentimagetextvideo
Input
documentimagetextvideo
Output
imagetext

Capabilities

  • Tool calling

    No

    Google AI for Developers (Gemini API docs) · T1

  • Structured output

    No

    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

    Unavailable

  • Fine-tuning available

    Unavailable

Context window

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

Providers & Pricing3

All offers in the price terminal →
Provider deployments, cheapest output first
ProviderContextInput / 1MOutput / 1MBatch in / outNative unitsStatusObservedSource
Google Gemini APIcheapest outputgemini-3.1-flash-image—$0.25 / $1.5images_output_per_mtok=60active31 min agosince 11 Sept 2026ai.google.devT1
Google Gemini APIgoogle/gemini-3.1-flash-image131.1Kout 32.8K——active3 h agosince 11 Sept 2026openrouter.aiT2
OpenRoutergoogle/gemini-3.1-flash-image131.1Kout 32.8K——active41 min 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 Image (Nano Banana 2)$0$1$2$3$4Sept 26Sept 26Sept 26Sept 26Google Gemini API: first observed → $3 · 11 Sept 2026OpenRouter: first observed → $3 · 12 Sept 2026
  • Google Gemini API
  • OpenRouter
  • OpenRouterfirst observed $312 Sept 2026
  • Google Gemini APIfirst observed $311 Sept 2026

Input price · USD / 1M tokens 2 providers

Input price history of Gemini 3.1 Flash Image (Nano Banana 2)$0$0.20$0.40$0.60Sept 26Sept 26Sept 26Sept 26Google Gemini API: first observed → $0.50 · 11 Sept 2026OpenRouter: first observed → $0.50 · 12 Sept 2026
  • Google Gemini API
  • OpenRouter
  • OpenRouterfirst observed $0.5012 Sept 2026
  • Google Gemini APIfirst observed $0.5011 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.

Timeline3

Full timeline →

Change history36

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 23 claims in force

Family
Gemini 3.1
Release date
18 Jun 2026
Status
active
Context window
131.1K tokens
Max output
32.8K tokens
Modalities
document, image, text, video
Input modalities
document, image, text, video
Output modalities
image, text
Tokenizer
Gemini
API model id
gemini-3.1-flash-image
Capabilities
image_generation, reasoning, search_grounding
Capabilities raw
Image generation, Search grounding, Thinking
Latest update
2026-02
Openrouter id
google/gemini-3.1-flash-image
Openrouter listed at
18 Jun 2026
Reasoning
Yes
Structured output
No
Supported parameters
include_reasoning, max_tokens, reasoning, reasoning_effort, response_format, seed, structured_outputs, temperature, top_p
Tool calling
No
Versions
{"stable":["gemini-3.1-flash-image"]}
Vision
Yes
36 claims · 21 properties6 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
18 Jun 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
131.1K tokens → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic

Max outputmax_output_tokens1

Claim history for Max output
ValueValid from → toStatusSourceConfidenceExtractor
32.8K tokens → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic

Modalitiesmodalities3conflicting claims

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

Input modalitiesmodalities_input3conflicting claims

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

Output modalitiesmodalities_output1

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

Capabilitiescapabilities1

Claim history for Capabilities
ValueValid from → toStatusSourceConfidenceExtractor
Image generation, Search grounding, Thinking → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic

Descriptiondescription10

Claim history for Description
ValueValid from → toStatusSourceConfidenceExtractor
Powerful, high-efficiency image generation and editing, optimized for speed and high-volume use cases. → supersededGoogle AI for Developers (Gemini API docs)T1highdeterministic
High-efficiency production-scale visual creation, combining the intelligence of the Gemini 3 series with lightning-fast generation speeds. → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic
High-efficiency production-scale visual creation, combining the intelligence of the Gemini 3 series with lightning-fast generation speeds. → supersededGoogle AI for Developers (Gemini API docs)T1highdeterministic
Powerful, high-efficiency image generation and editing, optimized for speed and high-volume use cases. → supersededGoogle AI for Developers (Gemini API docs)T1highdeterministic
Powerful, high-efficiency image generation and editing, optimized for speed and high-volume use cases. → supersededGoogle AI for Developers (Gemini API docs)T1highdeterministic
High-efficiency production-scale visual creation, combining the intelligence of the Gemini 3 series with lightning-fast generation speeds. → supersededGoogle AI for Developers (Gemini API docs)T1highdeterministic
High-efficiency production-scale visual creation, combining the intelligence of the Gemini 3 series with lightning-fast generation speeds. → supersededGoogle AI for Developers (Gemini API docs)T1highdeterministic
Powerful, high-efficiency image generation and editing, optimized for speed and high-volume use cases. → supersededGoogle AI for Developers (Gemini API docs)T1highdeterministic
Powerful, high-efficiency image generation and editing, optimized for speed and high-volume use cases. → supersededGoogle AI for Developers (Gemini API docs)T1highdeterministic
High-efficiency production-scale visual creation, combining the intelligence of the Gemini 3 series with lightning-fast generation speeds. → supersededGoogle AI for Developers (Gemini API docs)T1highdeterministic

Latest updatelatest_update1

Claim history for Latest update
ValueValid from → toStatusSourceConfidenceExtractor
2026-02 → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic

Openrouter idopenrouter_id1

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

Reasoningreasoning1

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

Structured outputstructured_output3conflicting claims

Claim history for Structured output
ValueValid from → toStatusSourceConfidenceExtractor
Yes → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
Yes → currentconflictingOpenRouter public model & pricing listingT2mediumdeterministic
No → currentcurrentGoogle AI for Developers (Gemini API docs)T1conflicteddeterministic

Supported parameterssupported_parameters1

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

Tool callingtool_calling1

Claim history for Tool calling
ValueValid from → toStatusSourceConfidenceExtractor
No → currentcurrentGoogle AI for Developers (Gemini API docs)T1highdeterministic

Versionsversions1

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

23

Source tiers

T1T218 / 5

Freshest observation

31 min ago

Conflicts

21 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-image model_pageT1· Official31 min ago21
Google AI for Developers (Gemini API docs)ai.google.dev/gemini-api/docs/models model_docsT1· Official31 min ago21
Google AI for Developers (Gemini API docs)ai.google.dev/gemini-api/docs/pricing pricingT1· Official31 min ago21
OpenRouter public model & pricing listingopenrouter.ai/api/v1/models catalogueT2· Quality secondary41 min ago9

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

Data quality (62/100) measures how well AI Atlas knows this entity — completeness, primary-source ratio, freshness, conflicts — never how good the model is. Methodology →