
Every tool in this category says free and means something different by it. Here is exactly what ours means: a new account gets 15 credits, which is about five images at 1K, on the same GPT Image 2.5 models paying users get. No card to sign up, and no automatic charge when the credits run out.
Do not burn credits on vague prompts. A prompt with no light, no lens and no setting will cost you the same 3 credits as a good one. Spend thirty seconds writing before you spend three credits generating.
Start from the library. Every prompt in the library below is shown with the image it produced. Starting from one that already works is the cheapest way to learn what this generation responds to.
Keep the first runs at 1K. Composition, lighting and framing are all visible at 1K. Resolution is the last decision, not the first.
Technical failures come back. Technical failures are refunded in full. If our safety check refuses a request before it runs, 3 credits plus 3 per photo are kept. If the image model refuses it, or our check blocks the finished image, the full price is kept.
Community prompts in the matching categories, each shown with the image it produced. Open one and the text is filled in for you.








| Credits per image | 1K | 2K | 4K |
|---|---|---|---|
| Standard | 3 | 6 | 12 |
| High | 12 | 24 | 40 |
Packs from $2.99, or monthly and annual plans; see pricing. Technical failures are refunded in full. If our safety check refuses a request before it runs, 3 credits plus 3 per photo are kept. If the image model refuses it, or our check blocks the finished image, the full price is kept.
There is no card on file, so there is nothing that can be charged. When the 15 credits are spent, generation stops until you choose to buy more. That is the whole mechanism.
About five at 1K Standard, at 3 credits each. Free credits run at base resolution (1K on Flare and Sunburst) and Standard quality; 2K, 4K and High quality need any purchase. Photo templates add 3 credits for your reference photo, so they start at 6: two runs. Prompts over 500 bytes add 2 credits per further 1,000 bytes, so a long template can cost 8 or more and leave one run. The exact cost is quoted before every generation.
No. Flare and Sunburst cost the same, and free credits spend on either. Free accounts get base resolution (1K on Flare and Sunburst), Standard quality and one reference photo, and free images carry a ShimmerPic watermark. Any purchase unlocks the rest and removes the watermark from every image you have made.
The 15 credits are a one-time welcome grant per account, not a recurring allowance. We would rather tell you that up front than have you plan around a refill that is not coming.
Model facts from OpenAI, "Introducing ChatGPT Images 2.5". ShimmerPic is an independent tool, not affiliated with OpenAI.