Imagen 4
Google Imagen 4 is the lightweight entry point to Google's photorealistic image stack on Astorie. Use it for fast drafts and steady photorealistic output before upgrading winning prompts to the dedicated Nano Banana 2 lineup.
This page covers the standard Google Imagen 4 model plus the legacy Nano Banana variant — both available on Astorie for lightweight, fast-turnaround workflows. Imagen 4 offers Fast, Standard, and Ultra tiers with reliable photorealism, natural lighting, and accurate material textures across the standard set of aspect ratios. The legacy Nano Banana model is the original Gemini Image variant kept around for in-flight projects and prompt libraries built before the February 2026 Nano Banana 2 launch — new work should generally start on Imagen 4 or jump directly to the dedicated Nano Banana 2 family for native 4K, web search grounding, and multi-image composition. Both variants on this page excel at product photography, architectural visualization, and lifestyle imagery — chain them into Astorie's video, audio, and 3D nodes to build complete creative pipelines without leaving the canvas.
Imagen 4 Variants
| Variant | Description |
|---|---|
| Imagen 4 | Standard Imagen 4 model with Fast / Standard / Ultra speed-quality tiers and solid photorealistic quality. |
| Nano Banana | Legacy Nano Banana model, kept available for projects and prompt libraries built before the Nano Banana 2 launch. |
Capabilities
Best For
- Lightweight photorealistic drafts and concept tests
- Product photography and lifestyle imagery for everyday workflows
- Marketing and advertising visuals at standard resolutions
- Legacy workflows built around the original Nano Banana model
Strengths
- Strong photorealism with natural lighting, shadows, and material textures
- Imagen 4 Fast is one of the lightest Google-grade image models on Astorie — quick to iterate with
- Three Imagen 4 tiers (Fast / Standard / Ultra) let you trade speed for fidelity per generation
- Reliable for product, architecture, and lifestyle shots without flagship overhead
Limitations
- No native 4K, no web search grounding, no multi-image composition — for those, use the Nano Banana 2 family instead
- Strongest at photorealism — illustration and concept art lack the opinionated aesthetic of Midjourney or dedicated art models
- Safety filters can be restrictive for some creative prompts
Tips & Best Practices
Use Imagen 4 on Astorie
Connect Imagen 4 with other AI models on Astorie's infinite canvas. No GPU required — start free.
Get Started FreeFrequently Asked Questions
What is Imagen 4 and how does it differ from the dedicated Nano Banana 2 page?
This page covers the standard Imagen 4 model and the legacy Nano Banana variant — Astorie's lightweight route into Google's photorealistic stack. The dedicated Nano Banana 2 family covers the flagship Gemini 3.1 Flash Image and Gemini 3 Pro Image lineup launched in February 2026, with native 4K, web search grounding, multi-image composition, and premium tiers. Use Imagen 4 for fast drafts; use Nano Banana 2 for hero finals.
When should I use Imagen 4 instead of Nano Banana 2?
Use Imagen 4 with its Fast / Standard / Ultra tiers for quick prompt validation, A/B testing, and high-volume drafts where speed and lightweight output matter. Switch to Nano Banana 2 when you need 4K output, web search grounding for real-world accuracy, multi-image composition with up to 14 references, or 5-person character consistency.
Should I still use the legacy Nano Banana model?
Only if your existing project or prompt library was specifically tuned to its look. For any new work, start with Imagen 4 (lightweight drafts) or Nano Banana 2 (flagship features). The legacy variant is kept available so in-flight projects don't break.
Related Features
How-To Guides
Related Reading
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