Free calculator
AI image cost calculator
Estimate cost per image, monthly spend, and cost per usable image across common pricing routes: DALL·E (API), Midjourney (subscription), Stable Diffusion (hosted credits or self-hosted), and Flux-style pay-per-image APIs.
Runs locally in your browser. No signup.
Calculator
Pick the billing model that matches how you generate.
How many images you want to ship (not drafts).
If you generate 3–5 variations to get one keeper, enter that.
Optional buffer for inpainting, upscales, revisions.
Monthly = 1. Weekly batches = 4. Daily = ~30.
Use this for Midjourney or hosted platforms with a base fee.
Effective cost per output (or per credit).
Leave 0 to model purely as a flat plan.
Only if you know your plan has paid overages.
Use your cloud GPU hourly rate.
Depends on resolution, steps, batch size.
Show formulas
Total generations per run = usable images × attempts × (1 + extra retry %)
Monthly generations = total generations per run × monthly runs
Pay-per-image cost = monthly fee + (monthly generations × cost per generation)
Self-hosted GPU cost = monthly fee + (monthly generations ÷ images per hour × GPU hourly cost)
Cost per usable image = monthly cost ÷ (usable images × monthly runs)
What this tool is (and what it isn’t)
The fastest way to overspend on AI image generation is to budget for final images instead of total generations. If you need 300 final images a month but it takes 4 attempts per keeper, you’re paying for ~1,200 generations — before you count upscales, inpainting, and revisions.
This calculator is a simple unit economics model. It turns your workflow inputs into four numbers you can use in planning: monthly cost, annual cost, generations per month, and cost per usable image. It’s not a provider endorsement and it doesn’t try to “rank” models — it helps you price the workflow you actually run.
Who this calculator is for
- Marketing teams budgeting ad creative production
- Agencies needing cost-per-asset estimates for client work
- Product teams generating thumbnails, variants, or personalization at scale
- Creators trying to choose between a subscription and pay-per-image
How to get accurate inputs (without perfect tracking)
If you don’t know your attempts per keeper, do a quick sample from real work. Pick 10 recent deliverables. Count how many generated images were produced for those deliverables (including rejected variations and “almost right” versions). Divide by 10. Use that as a starting point.
How to lower cost per usable image
- Use reference sets (style frames) so you stop re-discovering the same look.
- Turn winning prompts into templates for each asset type.
- Separate ideation and production: cheap drafts, premium finals.
- Lock aspect ratios early to avoid expensive rework.
- Track attempts even roughly so budgets stop being guesses.
Related learn pages
FAQ
How does the AI image cost calculator work?
You enter how many final images you need per month, how many attempts it usually takes to get one keeper, and which pricing route you use. The calculator estimates total generations and multiplies by the effective unit price (or converts GPU hours to cost) to produce monthly and annual spend.
What’s the difference between cost per generation and cost per usable image?
Cost per generation is what the provider bills for each output. Cost per usable image accounts for your hit rate: if it takes 4 tries to get one keeper, your cost per usable image is roughly 4× your cost per generation.
Does Midjourney have a per-image price?
Midjourney is usually billed as a subscription. This tool estimates an effective per-image cost by dividing your plan spend by your usable outputs and modeling any optional overages.
Is Stable Diffusion free?
Stable Diffusion can be free to run locally if you already have hardware, but hosted platforms and APIs usually charge per credit or per image. This calculator supports both a fixed monthly platform fee and a per-image rate, plus a self-hosted GPU option.
Is this calculator accurate for every provider?
It’s an estimation tool. Providers change pricing, and some charge based on resolution, quality, credits, or GPU time. Use it for budgeting and unit economics, then verify exact prices on the provider’s pricing page.
Want to estimate text-generation spend too? Pair this with our ChatGPT vs Claude cost calculator.