Imagen4 - Imagen4 Fast
Imagen4
Google Imagen 4 series for high-quality text-to-image generation with fast and ultra variants.
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⚡ Imagen 4 Fast
Optimized for speed and exploration—Imagen 4 Fast outputs 1–4 images per request from the same prompt. Default aspect is 16:9; use an optional integer seed for reproducible batches during A/B testing.
What is Imagen 4 Fast?
Imagen 4 Fast on FuseAITools (imagen4-fast) generates 1–4 images from one prompt for rapid iteration. Required: prompt (max 5000 chars). Optional: negative prompt, num images (1–4), aspect ratio (default 16:9), and integer seed. Ideal for concept batches and high-volume testing.
🖼️ Imagen 4 on FuseAITools
Imagen 4 on FuseAITools is Google's text-to-image suite—pick Generate for balanced quality, Fast for speed and batch output (1–4 images), or Ultra for flagship fidelity. All tiers share optional negative prompts, five aspect ratios, and seed controls. Credits appear on the Generate button before you submit; new users receive 20 free credits on sign-up.
✨ Imagen 4 Core Features
Prompts and negative prompts up to 5000 characters—enough detail for style, composition, and exclusions.
1:1, 16:9, 9:16, 3:4, 4:3 across all tiers—square posts, widescreen banners, and vertical stories.
Imagen 4 Fast outputs 1–4 images per request—compare variants without re-running the prompt.
Google Imagen 4 in the browser—credits shown before generate; pairs with Veo 3.1 video workflows.
🎯 Built for These Scenarios
📊 Imagen 4 Generate vs Fast vs Ultra
| Dimension | Generate | Fast | Ultra |
|---|---|---|---|
| Positioning | Balanced quality and speed | Speed + batch exploration | Flagship fidelity |
| Output count | 1 image per request | 1–4 images per request | 1 image per request |
| Prompt limit | Max 5000 chars | Max 5000 chars | Max 5000 chars |
| Negative prompt | Optional (max 5000 chars) | Optional (max 5000 chars) | Optional (max 5000 chars) |
| Aspect ratios | 1:1, 16:9, 9:16, 3:4, 4:3 | Same (default 16:9) | Same (default 1:1) |
| Seed type | Optional string (≤500 chars) | Optional integer | Optional string (≤500 chars) |
| Best for | Everyday marketing and social stills | Rapid A/B tests and concept batches | Hero assets and client delivery |
❓ FAQ (Imagen 4)
⚙️ Imagen 4 Technical Specs
Parameters below match the FuseAITools Imagen 4 form and API (imagen4-generate, imagen4-fast, imagen4-ultra).
| Tier | Required input | Output | Aspect ratios | Key controls |
|---|---|---|---|---|
| Generate | Prompt (max 5000 chars) | 1 image | 1:1, 16:9, 9:16, 3:4, 4:3 | Negative prompt, seed string (≤500 chars) |
| Fast | Prompt (max 5000 chars) | 1–4 images | Same five ratios (default 16:9) | Negative prompt, num images, integer seed |
| Ultra | Prompt (max 5000 chars) | 1 image | Same five ratios (default 1:1) | Negative prompt, seed string (≤500 chars) |
Imagen 4 — Three Text-to-Image Tiers
Switch tabs to match speed, batch size, or final quality:
Generate
Imagen 4 Generate
Balanced text-to-image—one image per run with string seed and five aspect ratios.
Open this tier →Fast
Imagen 4 Fast
Speed tier—output 1–4 images per request with integer seed; default aspect 16:9.
Current tierUltra
Imagen 4 Ultra
Flagship fidelity—single high-quality image with string seed; default aspect 1:1.
Open this tier →📊 Imagen 4 Fast vs Ultra
| Dimension | Fast | Ultra |
|---|---|---|
| Output per request | 1–4 images | 1 image |
| Speed focus | Fastest | Quality-first |
| Seed type | Integer | String (≤500 chars) |
| Best for | Batch ideation | Hero / client assets |