Every tool in this category says free and means something different by it. Here is exactly what ours means: a new account gets 30 credits, which is about ten 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.
Failed generations come back. If a generation fails, the credits are returned. You are paying for images, not for attempts that never arrived.
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 $9, or monthly and annual plans; see pricing. Failed generations are refunded.
There is no card on file, so there is nothing that can be charged. When the 30 credits are spent, generation stops until you choose to buy more. That is the whole mechanism.
About ten at 1K Standard (3 credits each), five at 2K Standard (6 each), or one at 2K High (24). Reference photos add 3 credits each and very long prompts add a small surcharge, so a run with a reference costs more than the base figure. The exact cost is quoted before every generation.
No. Flare and Sunburst cost the same number of credits, and free credits spend on either. There is no reduced-quality free tier — the difference between free and paid here is how many images, not which model.
The 30 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.