The family's precision tier
In Google's own words: when creative work needs maximum detail and strict prompt adherence, use Ultra. Every line in the brief is a hard constraint, not a suggestion.
Google · Gemini API · June 24, 2025 preview, August 15 GA
Imagen 4 Ultra — When every word in the prompt must land
- Strictest prompt adherence
- In-image text leaps forward
- Up to 2K resolution
- SynthID on every image
What is Imagen 4 Ultra?
The precision tier in Google's Imagen 4 family — paid preview June 24, 2025, generally available August 15. Ultra is built for strict prompt adherence: multi-constraint briefs where every line still shows up. Up to 2K, in-image text leaps vs Imagen 3, SynthID on every image.
Developer
Google
Preview · GA
June 24, 2025 · August 15
Max resolution
Up to 2K
Family tiers
Ultra · Standard · Fast
On iMini
Browser · free credits
In-image text you can actually read
Google's June and August 2025 announcements both lead with "major text rendering gains vs Imagen 3" — which is why official demos are console-warning comics and metal-headline posters.
Up to 2K, GA from August 2025
Both Imagen 4 and Imagen 4 Ultra support up to 2K — enough for marketing assets and zooming into complex compositions.
Three tiers, one decision
Fast for volume, standard Imagen 4 as daily workhorse, Ultra when alignment and detail decide delivery.
What the model actually delivers
Multi-panel comics with readable console text, vintage postcards, summit photography, alien landscape fashion — all from Google's Imagen 4 launch and GA announcements.
Compare with today's top models
Ultra vs the other two Imagen 4 tiers, plus Google's Nano Banana Pro and OpenAI's GPT Image 2 — alignment, resolution, text, editing, and the speed tradeoffs each tier pays.
| Dimension | Imagen 4 Ultra | Imagen 4 | Imagen 4 Fast | Nano Banana Pro | GPT Image 2 |
|---|---|---|---|---|---|
| Prompt adherence | Highest in Imagen 4 family | Broad and steady | Fair for the tier | Excellent | Excellent |
| Resolution ceiling | Up to 2K | Up to 2K | Standard size · speed tier | Up to 4K | Native 4K (3840×2160) |
| In-image text | Major leap vs Imagen 3 | Major leap vs Imagen 3 | Good | Industry-best text precision | Excellent |
| Photoreal detail | Best detail in family | Excellent | Good | Excellent | Excellent |
| Editing & references | Text-to-image only | Text-to-image only | Text-to-image only | Local edit · light · depth · color | High-fidelity edit + identity hold |
| Reasoning / Thinking path | No thinking path | No thinking path | No thinking path | Gemini reasoning + Search grounding | Images 2.0 Thinking |
| Speed profile | Slowest · quality-first | Balanced | Fastest · volume tier | Quality-first Pro channel | Instant fast output + quality tiers |
| Default pick | Every constraint must hit | Daily high-quality default | High-volume drafts on budget | Premium typography & final polish | OpenAI 4K production default |
Where Imagen 4 Ultra shines
Instruction following, in-image text, up-to-2K photoreal detail, cross-style coverage, and provenance you don't have to manage manually.
Instruction following under multiple constraints
Three panels, four verbatim in-image text blocks, specified wardrobe, specified light direction — Ultra is the tier built to satisfy all of them in one render.
In-image text
Console warnings, postcard headlines, comic sound effects, metallic poster type. Official demos lean on text because it's the biggest gain vs Imagen 3.
Photoreal and editorial detail
Summit sunrise and fashion stills need natural light, real skin, fabric volume, and cinematic color — without quietly dropping half your prompt.
Up to 2K output
Enough for marketing assets and complex compositions — confirmed for both Ultra and standard in Google's August 2025 GA announcement.
Range without switching models
Vintage comics, old travel graphics, lifestyle photography, surreal concept fashion — illustration and photography on one interface.
SynthID by default
Every Imagen 4 family image carries Google's invisible SynthID watermark — provenance travels with the file without affecting visible design.
One model, eight production workflows
The jobs Google chose to demo, plus everyday scenes where strict prompt following quietly saves three rerolls.
Multi-panel narrative comics
Three-panel cosmic epic with cross-panel character consistency — hull text, radar readouts, and sound effects exactly as specified.
Travel and destination graphics
Vintage postcard front — tower, cherry blossoms, snow peaks — headline type that looks printed, not painted.
Lifestyle and outdoor photography
Summit sunrise moment, panoramic valley below, dramatic light, arms-raised celebration exactly as asked.
Avant-garde fashion editorials
Architectural gown on a glittering alien landscape under twin suns — high-concept still that still holds your color direction.
Landscape and nature assets
Dawn mountains reflected in a mirror lake — background plates that used to mean stock licensing.
Vintage four-panel and explainer strips
Four-panel comic with readable captions and dialogue — suited to release notes, onboarding, and social explainers.
Poster typography
Slanted metallic chrome headline, clean subhead line, distressed border, fine-print disclaimer readable at the bottom.
Launch and announcement key visuals
Product launch heroes and banners with long non-negotiable requirement lists attached.
Teams whose briefs read like checklists
When "close enough" means another review round, alignment beats raw resolution.
Marketing & growth
Every prop, line, and mood listed in the ad brief has to survive to final delivery.
Designers
High-alignment concept comps at 2K, then into real layout tools for finish.
Agencies
Clients specify direction tightly and expect style to hold through revisions.
Developers
Teams already on Gemini API and AI Studio who want Ultra and the rest of the family compared for real.
Creators
Strips, explainer panels, and series illustration — dialogue must read on the first pass.
E-commerce & DTC
Product scene shots and campaign heroes built to spec sheets, not mood boards.
Three steps to run Imagen 4 Ultra
Step 1
Open the Imagen 4 Ultra entry
Enter the iMini image workspace and select Imagen 4 Ultra — same account and credits as Imagen 4, Fast, and other models.
Step 2
Write with deliberate detail
List panels, verbatim copy (in quotes), lighting, and style. Ultra rewards density — it doesn't drown in it.
Step 3
Generate, check line by line, deliver
Run your checklist against the output, then export for pitch, ads, or layout proposals.
Four ready-to-use prompts
Google official example prompts. Hover for full text, copy in one click, run on iMini.
Cosmic comic
A three-panel cosmic epic comic. Panel 1: tiny "Stardust" ship in a nebula; radar shows anomaly (text 'ANOMALY DETECTED'), hull text 'stardust'. Pilot whispers. Panel 2: bioluminescent leviathan emerges; console red text 'WARNING!'. Panel 3: leviathan chases ship through asteroid field; console text 'SHIELD CRITICAL!', screen text 'EVADE!'. Pilot screams, sound effects 'CRUNCH!', 'ROOOOAAARR!'.
Kyoto postcard
Front of a vintage Kyoto travel postcard: iconic pagoda under cherry blossoms, snow-capped mountains in the distance, clear blue sky, vivid colors.
Outdoor photography
A photograph: an adventurous couple reaches a mountain summit at sunrise, arms raised in celebration, dramatic panoramic valley below.
Fashion editorial
Avant-garde fashion editorial: model in voluminous architectural gown on a glittering alien landscape under twin sunsets, surreal colors, high concept, cinematic.
Using Imagen 4 Ultra on iMini
Worth reading before your first generation.
Yes. Use iMini's Imagen 4 Ultra creation entry with daily free credits — no Gemini API key required. Limits follow your iMini plan.
Compare side by side on iMini
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Nano Banana ProGemini 3 Pro Image · premium 4KGPT Image 2OpenAI native 4K · Thinking
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Generate Imagen 4 Ultra free on iMini now
Google's precision tier — strictest prompt adherence, readable in-image text, up to 2K, SynthID on every image — alongside Imagen 4, Nano Banana Pro, and GPT Image 2 on iMini.
Use Imagen 4 Ultra freeNo Gemini API key — one iMini account is enough.