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Each generation of Nano Banana (Gemini 2.5 Flash Image) costs 200 credits in Promptus. That's equivalent to $0.20 per image.
What is Nano Banana?
Editor’s note: Nano Banana began as an internal codename but Google has since formally adopted it as an official marketing name alongside the Gemini technical designation, and the current generation is Nano Banana 2 (Gemini 3.1 Flash Image) — see TechCrunch’s coverage of the Nano Banana 2 launch. The description below covers the original Gemini 2.5 Flash Image generation.
Nano Banana is Google’s original codename for Gemini 2.5 Flash Image—a fast, capable image model that does natural-language edits, multi-image fusion, character consistency (keeping the same person/mascot across shots), and world-aware tweaks. Outputs include invisible SynthID watermarking for provenance. It’s excellent for everyday creative work: cleaning up photos, compositing, style-matching, and more.
Why use it on Promptus? Because Promptus is a single web interface where you can generate & edit with Nano Banana, organize results in Collections, publish a gallery, and even expand your visuals into video and music—without juggling extra tools or export
Plans & what you get
Free Trial — 1,000 credits (one-time)
- Great for first impressions.
- Images included: 5 (at 200 credits/image).
- Try Collections (private organization) and a basic public gallery.
Artisan — $5 / month (5,000 credits/month)
- Practical for occasional creators.
- Images included each month: 25.
- Access to Promptus Web + core features (model picker, Collections, publishing).
Designer — $25 / month (25,000 credits/month)
- Best for steady creators and teams.
- Images included each month: 125.
- Advanced gallery tools (branding, custom pages/microsites, custom domain/WordPress gallery options, etc.).
One-Time License — $49 (desktop app + 10,000 bonus credits)
- Unlimited local image/video generation on your own machine (desktop app).
- The 10,000 bonus credits are a cloud pool you can spend as you wish.
- Images from bonus credits: 50 (one-time).
Heads-up: If you ever see a different credit allowance for Designer in your dashboard, just divide that number by 200 to get the monthly image count.
Earn more credits by sharing your GPU
If you enable compute-sharing, Promptus can schedule safe workloads to your GPU when you’re idle:
- Toggle on/off anytime in the app.
- Credits accrue automatically while you share.
- Spend those credits on Nano Banana images, video jobs, and other platform features.
- This helps power an ecosystem with hundreds of AI models (image, video, audio/music, utilities)—and rewards you for participating.
What you can do with Nano Banana on Promptus (examples)
- Cleanup & polish: “Remove the coffee stain, keep fabric texture; slightly warm the lighting.”
- Character consistency: “Keep this person identical; generate three scenes (office, café, beach) with different outfits.”
- Fusion: “Place the red mug from image A into scene B near the keyboard; match color temperature and shadows.”
- Diagram to design: “Turn this hand-drawn floor plan into a clean, labeled top-down layout.”
- Scene variations: “Give me three styles of the same room: Scandinavian minimal, warm rustic, neon cyberpunk.”
