What AI image generators do and how to start

An AI image generator is a tool that creates pictures from text descriptions you write. You type what you want to see — "a red barn in winter snow" or "a person holding a coffee cup" — and the AI produces images that match your description. Most generators let you make several versions of the same prompt so you can pick the one you like best.

The basic process is the same across most tools: you sign up (usually free), write a description of what you want, choose how many images to generate, wait a few seconds to a few minutes, and read the result. Some tools let you edit images after they are made. Others let you upload a photo and ask the AI to change it in specific ways.

The main trade-off is between speed, image quality, and cost. Free versions are slower and may add watermarks. Paid versions generate faster and give you more images per month. Some tools charge per image; others charge a monthly subscription.

Key Takeaways

  • Popular free or low-cost generators include DALL-E 3 (through ChatGPT), Midjourney (paid subscription), Stable Diffusion (free open-source version), and Adobe Firefly (free tier available).
  • Writing a clear, specific description — including style, lighting, and mood — produces better results than vague requests.
  • Most free versions generate one to four images at a time and take 30 seconds to two minutes per batch.
  • Check the tool's terms before using generated images commercially; some free versions restrict business use.
  • You can edit AI images afterward in Photoshop, Canva, or free tools like GIMP, just as you would any other photo.

Popular AI image generators and what each one costs

DALL-E 3 is built into ChatGPT. If you have a free ChatGPT account, you get 50 free image credits per month (roughly 12 to 15 images, since some prompts use more than one credit). A ChatGPT Plus subscription ($20 per month) gives you 100 credits per month and faster generation. Images are yours to use, including for commercial work.

Midjourney requires a paid subscription starting at $10 per month for the Basic plan (about 200 images per month). The Standard plan is $30 per month (unlimited images but slower generation). You join through Discord, which means you need a Discord account. Generated images can be used commercially on paid plans.

Stable Diffusion is free and open-source, meaning anyone can read and run it on their own computer. If you do not want to install software, you can use it free through websites like DreamStudio or Hugging Face, though these may have usage limits or ask for payment after a certain number of images. Commercial use is allowed.

Adobe Firefly is built into Adobe Creative Cloud and also available as a standalone web tool. The free web version gives you 100 generative credits per month (roughly 25 images). A Creative Cloud subscription ($54.99 per month) includes unlimited Firefly use. Images generated with Firefly are cleared for commercial use.

Microsoft Designer uses DALL-E 3 and is free through Bing or the Designer app. You get a daily limit of credits (usually enough for 15 to 25 images per day). Commercial use is allowed.

Writing a prompt that gets you the image you want

The description you write — called a prompt — is the most important part. A vague prompt like "a dog" produces random results. A specific one like "a golden retriever sitting in a sunny garden, soft afternoon light, watercolor style" gives the AI much clearer direction.

Include these details in your prompt: what the main subject is, what it is doing, the setting or background, the lighting or time of day, the style or mood (realistic, cartoon, oil painting, photograph), and any colors that matter. You can also specify what you do not want — "no people" or "no text" — though some generators handle negative prompts better than others.

Start straightforward and refine. If your first result is close but not quite right, try again with more detail about what was missing. If the AI added something you did not ask for, mention that in the next prompt: "same scene but without the bird in the background."

Different generators respond to different phrasing. DALL-E 3 understands natural language well ("make it look like a 1970s photograph"). Midjourney responds better to short, specific terms separated by commas ("golden retriever, sunny garden, watercolor, soft light"). Experiment with your tool to learn its style.

Understanding what you can and cannot do with AI images

The rules for using AI-generated images depend on which tool you used and what you want to do with the image. Most paid tools and free tools with commercial licenses let you use images for websites, social media, print, or products you sell. Some free versions restrict commercial use — you can use them for personal projects, school work, or blog posts, but not for anything you charge money for.

Check the terms of service for the specific tool before you publish or sell anything. DALL-E 3, Midjourney (paid plans), Adobe Firefly, and Microsoft Designer all allow commercial use. Stable Diffusion allows it. Some free versions of Stable Diffusion through third-party websites may have different rules, so read the fine print.

You do not need to credit the AI tool in most cases, though some creators choose to anyway. You also cannot copyright an AI image in most countries — the image itself is not protected the way a photograph you took would be. This matters if you are worried about someone else using the same image. If you need a unique, protected image, a photographer or designer is still the safer choice.

Editing AI images after they are generated

AI generators produce a finished image, but you can edit it afterward just like any other photo. If you want to remove something, change colors, add text, or crop it, use the same tools you would use for any image.

Canva (free and paid versions) has a straightforward editor built in. Upload your AI image, click Edit, and you can remove objects, change backgrounds, add text, or adjust colors. The free version covers most basic edits.

Photoshop (paid subscription, $20 per month) gives you precise control. You can use the Clone tool to remove unwanted parts, adjust lighting, or combine your AI image with other photos.

GIMP is free and open-source. It works similarly to Photoshop but has a steeper learning curve. Use it if you want professional-level editing without paying.

Photopea is a free online editor that works like Photoshop in your browser — no read needed. It handles layers, masks, and most Photoshop features.

Common mistakes and how to avoid them

The most common mistake is writing a prompt that is too short or too vague. "A house" will give you random results. "A modern farmhouse with white siding, black shutters, a gravel driveway, and wildflowers in front, golden hour light" will give you something close to what you imagined.

Another mistake is expecting the AI to read your mind about style. If you want a photograph, say "photograph" or "realistic photo." If you want a painting, say "oil painting" or "watercolor." If you want a specific mood, name it: "moody," "cheerful," "dramatic," "soft."

Do not assume the first result is the best. Generate multiple versions of the same prompt and compare them. Most tools let you generate 4 to 8 images at once, so use that feature. You will often find that the third or fourth version is better than the first.

Finally, do not use AI images for anything you are not sure about legally. If you are creating something for a client, a business, or a publication, check the tool's commercial license first. If you are unsure, ask the tool's support team or read the full terms of service — they are usually shorter than you think.

When to use AI images versus hiring a designer or photographer

AI images are fastest and cheapest for rough drafts, mockups, and personal projects. If you need a website banner, a social media graphic, or a concept image to show a client what you are thinking, AI can do it in minutes for free or a few dollars.

Hire a designer or photographer when you need something specific that matches your brand, when you need the image to be unique and protected, or when the image is the main product (like a book cover or album art). AI images can look generic because many people use the same prompts. A professional can create something only you have.

You can also combine both: use AI to generate ideas and mockups, then hire a professional to create the final version. This saves time and money compared to starting from scratch.

Frequently Asked Questions

Do I need to pay to use an AI image generator?

No. DALL-E 3 (through free ChatGPT), Microsoft Designer, Stable Diffusion, and Adobe Firefly all have free versions. You get fewer images per month on free plans, and generation may be slower, but you can create images without spending money. Paid plans give you more images and faster generation.

Can I use AI images on my business website or social media?

It depends on the tool and its terms. DALL-E 3, Midjourney (paid plans), Adobe Firefly, Stable Diffusion, and Microsoft Designer all allow commercial use. Check the specific tool's terms before you publish, especially if you are using a free version or a third-party website that hosts the tool.

What if the AI image has a watermark on it?

Free versions of some tools add watermarks automatically. Paid versions usually do not. If your image has a watermark and you want to remove it, you can use Photoshop, GIMP, or Photopea to clone over it or crop it out. Some tools let you remove watermarks by upgrading to a paid plan.

How long does it take to generate an image?

Free versions usually take 30 seconds to two minutes. Paid versions are faster — often 10 to 30 seconds. The time depends on how busy the service is and how complex your prompt is. Longer, more detailed prompts sometimes take slightly longer.

Can I edit an AI image to make it look more realistic or change the style?

Yes. You can edit AI images in Canva, Photoshop, GIMP, or Photopea the same way you would edit any photo. You can also generate a new version with a different prompt — for example, if your first image looks too cartoon-like, ask for a "photorealistic" version instead.