Working with the API
Batch image generation API: queue, webhooks, safe retries
How to send many requests and keep track of every one: a queue on your side, webhooks, and the X-Idempotency-Key header for safe retries.
Blog
Pricing, model comparisons, working with the API and prompts—all on real generations, with the model and the price of every image.
All articles
Model comparisons
The best image generation APIs: 10 models in one table
Nano Banana and GPT Image side by side: resolutions, price per image, average response time and what each model is best for.
Errors and fixes
Image API returned no image? Declined requests explained
Why a model sometimes returns no image, what it looks like in the API response, and how to reword a harmless prompt that was misread.
Errors and fixes
Image API error 429: rate limits, retries, and webhooks
What a 429 response means, the limits behind it, and how to stay within them: how many requests to keep in flight, how to retry after a pause, and how webhooks replace frequent polling.
Pricing and billing
A failed request is free: how paying per image works
The amount is charged when you send a request, and if no image comes back, it goes straight back to your balance. Here’s how that looks in the API response and in the portal.
Pricing and billing
GPT Image 2.5 API price per image
Prices per image: GPT Image 2.5 at 1K; GPT Image 2.5 Sunburst and GPT Image 2.5 Flare at 1K, 2K, and 4K. Why OpenAI quotes tokens, and how to count a budget.
Pricing and billing
How much do 10,000 AI images cost? Work out a budget
We work through examples of 10,000 images a month, across models and resolutions. Failed requests do not end up in the bill, and a template for your own calculation is at the end.
Working with the API
Maker API or unified image API: when direct is better
When it is more convenient to use Google’s or OpenAI’s own API directly, and when a unified API suits you better: price, keys, limits, and payment. A list of pros and cons.
Pricing and billing
Nano Banana 2.1 API: price per image at 1K, 2K and 4K
The Rendergrid price and Google’s official price per image at each resolution, how many images $10 buys, and the date the prices were checked.
Working with the API
Nano Banana 2.1 API: your first image in five minutes
A key, one POST request, and a status check: a step-by-step example in curl, Python, and Node.js, with resolution up to 4K and a choice of aspect ratios.
Model news
Nano Banana 2.1: photo scenes, lettering, and edits
Photo-like scenes, lettering, and edits from a reference image, up to 4K: we show what Nano Banana 2.1 can do on real generations, with the prompt and the price of each image.
Pricing and billing
Nano Banana Pro API price per image: Google and Rendergrid
Google’s official price and Rendergrid’s price per image at 1K, 2K, and 4K, how many images $10 gets you, and why a failed request costs nothing.