





Imagen Image API brings Google's diffusion-based image generation family to your stack, spanning Imagen 3 and the newer Imagen 4 line. Reach for a fast tier when you need rapid iteration, or move up to the Ultra model when the brief calls for the sharpest detail, rich lighting, and lifelike output. Atlas Cloud serves every tier through one OpenAI-compatible key, with per-call pricing from $0.02 per image and Day-0 access. Start building today.
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Match each Imagen endpoint to your workflow, from Imagen 3 Fast at $0.02 to 2k Imagen 4 Ultra, all on one OpenAI-compatible key with transparent per-image pricing.
| Modality | Description |
|---|---|
| Imagen 3 Image API (Text to Image) | Feed a written prompt and this endpoint returns detailed, richly lit photorealistic images at 1k resolution for $0.04 per image. It supports five aspect ratios, negative prompts, and up to four images per request, which suits marketing visuals and concept art. |
| Imagen 3 Fast (Text to Image) | When fast turnaround outweighs maximum polish, Imagen 3 Fast produces text-to-image output at 1k resolution for $0.02 per image. Reproducible seeds and optional prompt expansion make it a practical fit for high-volume drafts and rapid iteration. |
| Imagen 4 Fast Image API (Text to Image) | Generate Imagen 4 generation quality on a tighter budget with this fast tier, which converts text prompts into 1k images for $0.02 each. Batch up to four outputs per call and steer results with negative prompts, ideal for prototyping and A/B visual tests. |
| Imagen 4 (Text to Image) | Imagen 4 is Google's flagship generator, transforming text prompts into images at either 1k or 2k resolution for $0.04 per image. With optional prompt expansion and seed control, it balances fidelity and cost across production content pipelines. |
| Imagen 4 Ultra Image API (Text to Image) | Need Google's sharpest text-to-image output? Imagen 4 Ultra renders up to 2k resolution for $0.06 per image as Google's highest quality tier. It reads negative prompts and fixed seeds, serving hero imagery and print-grade creative where fine detail is non-negotiable. |
Backed by Google's diffusion research, the Imagen Image API pairs photorealistic 2K rendering, dependable text layout, and coherent multi-subject scenes with five selectable models, batch output, and precise negative-prompt and seed control.

Complex prompts hold together here. Imagen 4 tracks multiple subjects, spatial relationships, and layered backgrounds, so crowded scenes stay coherent rather than dissolving into artifacts. Describe three characters around a table under specific lighting and the composition reads as intended. That reliability shortens the trial-and-error loop when you are illustrating narrative or advertising concepts.
Send an identical prompt through the Imagen Image API and set each render side by side to watch how detail, directional light, and color choices shift from the flagship to a rival model to the previous generation.
A teenage girl in a red rain jacket laughing as she leaps over a puddle on a rain-slicked cobblestone street, low afternoon sun breaking through just after the storm and throwing long warm reflections across the wet stones, shot on an 85mm telephoto lens that compresses the layered old-town facades behind her, complementary red-and-teal palette pulled from her coat and the glossy blue doors, droplets frozen mid-air, fine film grain, candid decisive-moment street photography, wide 16:9 aspect ratio, full-bleed horizontal landscape

Generated with Imagen4 Ultra on Atlas Cloud

Generated with Seedream v5.0 Pro on Atlas Cloud

Generated with Imagen3 on Atlas Cloud
An overhead flatlay of a rustic Mediterranean summer breakfast spread across a weathered walnut table, torn crusty sourdough, a bowl of glistening figs and apricots, dripping honeycomb, and a chipped ceramic jug of iced mint tea, side window light raking low from the left to cast long soft shadows and pick out every crumb and fruit fuzz, a warm ochre and deep-green palette anchored by a bright linen napkin for negative space, a dense cluster of dishes on one side and bare tabletop on the other, macro texture on the bread crust and pooling honey, natural food photography, wide 16:9 aspect ratio, full-bleed horizontal top-down landscape

Generated with Imagen4 Ultra on Atlas Cloud

Generated with Seedream v5.0 Pro on Atlas Cloud

Generated with Imagen3 on Atlas Cloud
From ad mockups and typography-heavy posters to portraits, multi-format social creative, and print-ready editorial, the Imagen Image API covers the full production range across Google's fast, standard, and ultra tiers.
Generate photorealistic product shots and campaign visuals from a single prompt, with lighting and texture rendered in convincing detail. Marketing teams use this to mock up ads and packaging concepts before any studio shoot.
Because Imagen renders clear, legible text inside images, the Imagen Image API handles posters, greeting cards, and comic panels where typography matters. Designers rely on it to place headlines and captions cleanly.
Need lifelike characters? Imagen 4 captures fine detail in skin, fabric, and hair with natural lighting, producing convincing portraits from description alone. Game studios and storytellers use it for concept characters and avatars.
With aspect ratios spanning 1:1, 16:9, and 9:16, the Imagen Image API outputs square posts, banners, and vertical stories in one workflow. Social teams size creative for each channel without cropping.
Output climbs to 2K resolution with sharp texture and rich lighting, making Imagen a fit for editorial spreads, book covers, and gallery prints. Publishers receive polished visuals straight from a text prompt.
Spin out up to four variations in one call, then reproduce the winner exactly using seed control. Teams sketch fast on Imagen 4 Fast at $0.02 per image before finishing on Ultra.
See how the Imagen Image API measures up against other top image models on Atlas Cloud across output resolution, aspect ratio range, and per-image pricing.
| Model | Provider | Max Resolution | Aspect Ratios | Price (per image) |
|---|---|---|---|---|
| Imagen 4 | 2K (2048px) | 1:1, 16:9, 9:16, 4:3, 3:4 | $0.04 | |
| Imagen 4 Ultra | 2K (2048px) | 1:1, 16:9, 9:16, 4:3, 3:4 | $0.06 | |
| Imagen 4 Fast | 1K (1024px) | 1:1, 16:9, 9:16, 4:3, 3:4 | $0.02 | |
| Imagen 3 | 1K (1024px) | 1:1, 16:9, 9:16, 4:3, 3:4 | $0.04 | |
| Seedream v4.5 | ByteDance | 4K (4096px) | 1:1, 16:9, 9:16, 4:3 + | $0.04 |
| Qwen Image 2.0 | Alibaba | 2K (2048px) | 1:1, 16:9, 9:16, 4:3, 3:4, 3:2, 2:3 | $0.035 |
| MAI-Image-2.5 | Microsoft | 1K (~1MP) | - | $0.05 |
Get started in minutes — follow these simple steps to integrate and deploy models through Atlas Cloud's platform.
Sign up at atlascloud.ai and complete verification. New users receive free credits to explore the platform and test models.
Combining the advanced Imagen Image models with Atlas Cloud's GPU-accelerated platform provides unmatched performance, scalability, and developer experience.
Low Latency:
GPU-optimized inference for real-time reasoning.
Unified API:
Run Imagen Image, GPT, Gemini, and DeepSeek with one integration.
Transparent Pricing:
Predictable per-token billing with serverless options.
Developer Experience:
SDKs, analytics, fine-tuning tools, and templates.
Reliability:
99.99% uptime, RBAC, and compliance-ready logging.
Security & Compliance:
SOC 2 Type II, HIPAA alignment, data sovereignty in US.
The Imagen Image API gives developers programmatic access to Google's Imagen family of text-to-image models through one endpoint on Atlas Cloud. Send a text prompt and the API returns generated images, with variants tuned for photorealism, fine detail, and accurate typography. A single OpenAI-compatible key reaches every model from Imagen 3 to Imagen 4 Ultra.
Atlas Cloud hosts five text-to-image models in the Imagen family: Imagen 3, Imagen 3 Fast, Imagen 4, Imagen 4 Fast, and Imagen 4 Ultra. The Fast tiers prioritize low-latency generation, the standard tiers balance quality and speed, and Ultra targets maximum fidelity for detail-critical work. All of them are served from the same integration.
Pricing on the Imagen Image API is pay-as-you-go with no subscription. Imagen 3 Fast and Imagen 4 Fast run at $0.02 per image, Imagen 3 and Imagen 4 at $0.04, and Imagen 4 Ultra at $0.06. You pay only for the images you generate, so cost scales directly with usage.
Getting started takes one API key and a POST request carrying your prompt and chosen model. Because the endpoint is OpenAI-compatible, most existing image generation code works after you swap the base URL and key. Add optional parameters such as aspect_ratio or num_images when you need finer control. Start building today.
Imagen 4 generates in five aspect ratios, 1:1, 16:9, 9:16, 4:3, and 3:4, at either 1K or 2K resolution. Set the aspect_ratio and resolution parameters per request to match social posts, banners, or print mockups. Need more than one variant? A single call can return up to four images.
Text rendering is one of the clearest upgrades in the Imagen 4 generation. Compared with Imagen 3, it produces cleaner spelling, longer legible strings, and layout-aware placement, which helps with posters, packaging mockups, and signage. For brand-critical or very small type, a human review pass is still worth keeping.
The variants trade speed against fidelity. Imagen 4 Fast is the quickest and most economical at $0.02 per image, standard Imagen 4 balances detail and cost at $0.04, and Imagen 4 Ultra pushes maximum quality at $0.06. Choose Fast for high-volume drafts and Ultra when fine detail matters most.
Yes. Every image Google's Imagen models produce carries SynthID, an invisible watermark embedded in the pixels that flags the content as AI generated. It stays detectable through cropping, filters, and compression without visibly altering the image, so outputs from the Imagen Image API look identical to standard renders.
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