What sizes does DALL·E 3 support?

Three — 1024×1024 (square), 1792×1024 (landscape) and 1024×1792 (portrait). DALL·E 3 does not support arbitrary dimensions through the API.

How much does an HD image cost versus standard?

Standard square images are the cheapest. HD roughly doubles the standard price, and the non-square sizes cost more again at both quality levels. The picker shows the exact figure for each combination.

HD helps for images with fine detail, text-like elements, or anything destined for print or large displays. For thumbnails, drafts and social posts, standard quality is usually indistinguishable and half the price.

Are these prices guaranteed current?

They are published list-price estimates and are labelled as such. OpenAI changes pricing periodically, so confirm the current rate in your OpenAI dashboard before budgeting at volume.

DALL·E 3 Size & Quality Picker

DALL·E 3 size & quality picker

DALL·E 3 only offers three sizes and two quality levels, but the six resulting combinations have noticeably different prices. This picker shows the cost per image for any combination and multiplies it by your batch size so you can budget a generation run before you spend a cent.

How DALL·E 3 pricing works

OpenAI prices DALL·E 3 per generated image, and the price depends on two factors:

Quality — standard or hd. HD adds a second refinement pass for finer detail and roughly doubles the cost.
Size — the square 1024×1024 is the cheapest; the wider 1792×1024 and taller 1024×1792 cost more because they contain more pixels.

There is no per-token billing here as with text models — it’s a flat fee per image, so total cost is simply price-per-image × number of images.

Tips

Draft in standard, finish in HD. Iterate on composition cheaply at standard quality, then regenerate the winner in HD.
Match aspect ratio to use. Landscape for hero banners, portrait for phone wallpapers and stories, square for avatars and thumbnails.
Estimate before batching. A 200-image HD landscape run is materially more expensive than the same run at standard square — check the total here first.