Runway vs Elyumfor Nano Banana 2
Same Google stills model, billed as 4 Runway credits per image versus a free Elyum preview you keep at 3 credits or kill.
Nano Banana 2 is Google's Gemini 3.1 Flash Image model. It is a fast text-to-image and image-editing engine built to hold faces, logos, and product geometry across a prompt change or an edit pass. That is the job most catalog, SKU, and campaign stills actually need, plus in-image text that reads as words instead of decorative noise.
What changes is not the weights. Runway lists the model as gemini_image3.1_flash (Nano Banana 2) and bills 4 credits per image, with an automatic credit return only on a hard generation error. Elyum runs the same model in the image studio at 1K, 2K, or 4K, eleven aspect ratios, a shared credit balance, and a keep-or-kill bill: you pay only for takes you keep.
Runway still wins if you need its own Gen-4.5 and Aleph stack, brand kits, HDR/ProRes export, or a timeline-adjacent production suite. Elyum has none of those. It is a multi-model studio with a cheaper stills meter and a refund on every kill.
Nano Banana 2 on Runway
Runway offers Nano Banana 2 as gemini_image3.1_flash inside its dashboard and developer API, in the same credit pool as Gen-4.5, Aleph 2.0, Kling, Veo, Seedance, and GPT Image 2. The Runway pricing page lists Standard at $15/mo (625 credits), Pro at $35/mo (2,250), and Max at $95/mo (9,500, with one month of unused-credit rollover). Example costs in the 2026 research put Nano Banana image generation at 4 credits per image. Paid Standard and up include all AI video and image models, so the model is not a hidden add-on once you are on a paid plan. The free tier exists (125 one-time credits, 5GB storage, limited model selection); whether Nano Banana 2 itself is on that limited free roster is not published.
A completed-but-unusable still is a sunk cost. Runway's help center states credits return automatically only when a generation ends in a hard generation error. Low-quality, off-prompt, or otherwise unwanted output is not refunded, which Trustpilot reviewers in 2026 repeatedly flag. Paid plans remove watermarks. Commercial-use terms were not quoted from Runway's own ToS in this research, so treat paid commercial output as likely but unconfirmed. Monthly plan credits reset each cycle (no rollover on Standard or Pro). Top-up credits (minimum 1,000) do not expire.
Nano Banana 2 on Elyum
On Elyum, Nano Banana 2 is text-to-image and image editing at three keep prices: 1K is 3 credits ($0.03), 2K is 4.5 credits ($0.04), 4K is 6 credits ($0.06). Every render comes back as a free preview. You KEEP the takes you want (that is the only charge) or KILL the rest for a full automatic refund. A failed generation is never billed. Ultra ($69/mo) is fair-use unlimited on this model; Pro and Ultra also include fair-use unlimited image generation on selected image models. Kept files download clean, no watermark, commercial use included.
Credits sit in one balance across 50+ video, image, and audio models. The Free plan is up to 150 credits once (our algorithm may grant them), no card; kills are metered lightly there (one kill a month), and paid plans kill freely. There is no timeline editor, stock library, talking-head product, mobile app, team seats, or community feed. If you need those, stay on Runway. If you want the same Google stills model with a cheaper keep and a refund on every miss, this is the other desk. The same keep-or-kill meter applies if you compare Higgsfield versus Elyum for Nano Banana 2.
What a Nano Banana 2 take costs
| Scenario | Runway | Elyum |
|---|---|---|
| One 1K still you keep | 4 credits per image (Runway does not publish $) | 3 credits ($0.03) after a free preview |
| Ten 1K renders, keep three | 40 credits if all ten complete (4 × 10) | 3 credits ($0.03); seven kills refund |
| A failed generation | Refund only on a hard generation error | Never charged; preview is free |
| Completed but unusable take | No refund; credits stay spent | KILL refunds the full keep price |
| Plan to reach the model | Paid Standard+ lists all image models; free roster unpublished | Free plan, up to 150 credits once (our algorithm may grant them); no card |
| Watermark on a paid keep | None on Standard and above | None; commercial use included |
Elyum: 1 credit = $0.01, charged only when you keep a take. Runway figures from its own pricing pages and independent reviews, verified 2026-09-07; sources at the end. Full rate card on the Nano Banana 2 page.
Where the two differ
Runway bills 4 credits per Nano Banana image with no published dollar rate for that line. Elyum lists keep prices in credits and dollars: 3 / 4.5 / 6 credits for 1K / 2K / 4K ($0.03 / $0.04 / $0.06).
Runway auto-returns credits only on a hard generation error. Elyum never charges a failed generation, and a completed miss can be killed for a full refund (one kill a month on Free; paid plans kill freely).
Elyum keeps at 1K, 2K, or 4K natively. Runway includes 4K upscaling on Standard+ (unlimited on Pro/Max); native Nano Banana 2 output size on Runway is not published.
Runway adds Gen-4.5, Aleph in-context video edit, brand kits, voice clones, HDR/ProRes, projects, and storage caps (20GB / 100GB / 500GB). Elyum is one studio, one balance, no timeline, no brand kit, no team seats.
Both expose the model outside the UI. Runway has a public developer API. Elyum has a REST API plus MCP for Claude, ChatGPT, and Cursor (MCP docs, API docs).
Paid Runway plans have no watermark; commercial terms were not independently quoted from Runway ToS. Elyum kept takes have no watermark and include commercial use.
Pick Runway when
- You already cut in Runway and need Gen-4.5, Aleph, brand kits, or HDR/ProRes next to the still.
- You want Runway's public API and one credit pool across Gen models and licensed third-party models.
- Parallel generations and project caps (5 / 15 / 20) matter more than a refund on a soft miss.
- Native 4K upscaling on Standard+ is the finish you already pay for.
Pick Elyum when
- You iterate: free previews, pay 3 credits ($0.03) only on a kept 1K, kill the rest.
- Ultra at $69/mo is fair-use unlimited on Nano Banana 2.
- You want 1K / 2K / 4K keep prices listed in dollars, not an unpublished Runway dollar rate.
- Same Google model, plus 50+ others on one balance, including via MCP and the API.
Nano Banana 2 in three styles, rendered on Elyum
Getting the most out of Nano Banana 2
- Lock identity first: name the person or SKU, then the change. "Same red bottle, three-quarter, label facing camera" holds geometry better than a new scene description.
- For edits, attach the still and state only the delta (background, lighting, crop). Rewriting the whole subject invites a lookalike, not the same object.
- Ask for readable type as copy, not decoration: exact words, font weight, and where the line sits (front label, lower third, UI bar).
- Pick the aspect ratio before the prompt. Elyum exposes eleven; a 1:1 catalog prompt in 16:9 will stretch packing and labels.
- Use camera language that Flash Image understands: 85mm, three-quarter, top-down pack shot, softbox, no extra characters in frame.
- Avoid stacking style adjectives and brand-lookalikes in one line. One lighting recipe plus one product constraint beats a mood board dumped into text.
Frequently asked questions
How much does a Nano Banana 2 image cost on Elyum vs Runway?
Is Nano Banana 2 the same model on both?
What happens to a bad Nano Banana 2 take?
Do I need a subscription to use Nano Banana 2 on Elyum?
Does Runway watermark Nano Banana 2 stills?
Where else can I run this model?
- Runway Pricing (official) (accessed 2026-09-07)
- Available Runway AI Models — Runway Developer Docs (accessed 2026-09-07)
- Kling 3.0 on Runway (accessed 2026-09-07)
- Creating with FLUX 3 — Runway Help Center (accessed 2026-09-07)
- Can I have credits refunded? — Runway Help Center (accessed 2026-09-07)
- Runway Reviews — Trustpilot (accessed 2026-09-07)
- Runway AI Pricing 2026: Free Plan, Credits, Max Plan & Best Value — Somake AI (accessed 2026-09-07)
- Runway AI pricing in 2026: every plan, credit cost, and what you actually get — eesel AI (accessed 2026-09-07)
- AI Video Startup Runway Valued at $5.3 Billion With New Funding — Bloomberg (accessed 2026-09-07)
- Runway on X — API model list changelog announcement (accessed 2026-09-07)
Related comparisons
Create everything. Keep the best.
Nano Banana 2 is a AI image generator you can preview free on Elyum. Keep the takes you love, kill the rest for a full refund.