Lexica
FreemiumAI image generator with the largest searchable prompt library in the industry
What is Lexica?
Lexica started as a prompt search engine — the largest public database of Stable Diffusion prompts and their generated images on the internet — and grew into a full AI image generator layered on top of that library. Its killer feature is still discoverability: you can search millions of real prompts submitted by real users, see exactly what each one produced, click any result to remix the prompt yourself, and adjust parameters from there. For anyone learning prompt engineering, this is an unmatched resource. No other AI art platform gives you this direct visibility into what actually works. On top of the library, Lexica runs its own Aperture model — a fine-tuned image generator focused on photorealistic and artistic outputs — alongside access to Stable Diffusion variants. The free tier lets you browse the entire library and run a limited number of personal generations, but commercial use requires a paid plan. Pricing is clean: Starter at $10/month (1,000 fast generations, personal commercial license), Pro at $30/month (3,000 fast generations, full commercial license, unlimited slow generations with daily cap), and Max at $60/month (7,000 fast generations, private images, full commercial license). Pro and Max users who exhaust fast generations are moved to the slow queue rather than cut off. Lexica is particularly popular with designers, content creators, and prompt engineers who want to learn by example, and with indie developers building AI-powered tools who need a searchable image source.
⚡ Quick Verdict
Prompt learners and visual designers who want to discover, remix, and refine prompts from a massive searchable library
Teams needing local model support, LoRAs, or the absolute cutting edge in visual quality
Free (limited) · Starter $10/mo · Pro $30/mo · Max $60/mo
Yes — limited browsing and generation
Millions of searchable public prompts and the fastest way to learn what works in AI image generation
Commercial use requires a paid plan, and the generator trails Midjourney on maximum artistic polish
Bottom line: Lexica scores 4.3/5 — The best tool on the market for learning AI prompting — the searchable prompt library alone is worth the subscription. Upgrade to Starter ($10/mo) the moment you need commercial rights.
Pricing
Free: Unlimited browsing of the public prompt library, limited personal generations, no commercial license.
Starter — $10/month: 1,000 fast generations per month, 2 concurrent jobs, personal commercial license.
Pro — $30/month: 3,000 fast generations per month, unlimited slow generations (with a daily cap), 3 concurrent jobs, full commercial license.
Max — $60/month: 7,000 fast generations per month, unlimited slow generations (with a daily cap), 3 concurrent jobs, private images, full commercial license.
Add-on credits: Additional fast generations can be purchased at $0.05 per generation. They never expire but require an active paid plan to use.
Key Features
- Millions of searchable public prompts with their generated images
- Click any public result to remix the exact prompt and parameters
- Lexica's own Aperture model alongside Stable Diffusion variants
- Advanced search with negative prompts, style filters, and ratio controls
- Private image generation on Pro and Max plans
- Commercial license included on all paid plans
- Add-on credit packs for bursts of extra fast generations
- Bulk export and gallery management tools
- Slow-queue unlimited generations on Pro and Max
Pros & Cons
Pros
- Unmatched prompt discovery — the largest searchable prompt library on the web
- Excellent learning tool for anyone new to prompt engineering
- Clean, fast web interface with no Discord friction
- Generous Pro tier with unlimited slow-queue generations
Cons
- Commercial use requires a paid plan — no free commercial tier
- Output quality trails dedicated Midjourney on artistic polish
- No LoRA or custom model support like Civitai or Tensor Art
FAQ
Is Lexica free to use?
Partially. The public prompt library is free to browse without limit — you can search and view millions of prompts and their images at no cost. Personal image generation is also free but limited in volume. The main catch is that you cannot use free-tier outputs commercially; commercial rights start at the $10/month Starter plan. For learning and personal experimentation, the free tier is genuinely useful.
What is the Lexica prompt library?
The Lexica prompt library is a searchable database of millions of Stable Diffusion prompts that real users have submitted along with the exact images those prompts produced. You can search by keyword, artist name, style, or subject and see the prompt text, model, parameters, and result side-by-side. Clicking any image lets you instantly remix the prompt in the Lexica generator. It is the largest tool of its kind.
How much does Lexica cost?
Lexica has three paid tiers: Starter at $10/month (1,000 fast generations, personal commercial license), Pro at $30/month (3,000 fast generations plus unlimited slow queue, full commercial license), and Max at $60/month (7,000 fast generations plus unlimited slow queue, private images, full commercial license). Additional fast generations can be purchased at $0.05 each.
What is Lexica Aperture?
Aperture is Lexica's in-house image generation model, fine-tuned specifically for photorealistic and artistic outputs. It runs alongside Stable Diffusion variants inside the Lexica generator and is the default for many prompts. Aperture's strength is reliable photo-like results with less prompt engineering than base Stable Diffusion requires. The model is available on all paid plans and limited free generations.
Can I use Lexica images commercially?
Yes, but only on paid plans. The Starter plan ($10/month) grants a personal commercial license for images you generate. Pro and Max plans grant full commercial licenses, which cover broader business use. Free tier generations are for personal use only. If you want to sell prints, use images in client work, or embed them in commercial products, subscribe to at least Starter.
Lexica vs Midjourney — which is better?
Midjourney still produces better artistic polish on average and is the industry leader for illustration work. Lexica wins decisively on prompt discovery, has a proper web interface (no Discord), and offers cheaper entry pricing. The best workflow for serious creators is often to learn prompts on Lexica and then generate final artwork on Midjourney if quality matters most.
Does Lexica support private generations?
Yes, on the Max plan ($60/month). Max users can mark their generated images as private so they do not appear in the public feed or become part of the searchable library. Starter and Pro users generate images that may surface publicly in the prompt library. If you are working on confidential projects, Max is the tier to choose.
What happens when I hit the fast generation limit?
On Pro and Max plans, hitting your monthly fast generation cap does not cut you off — you are automatically switched to the slow queue, where you can continue generating unlimited images with a daily cap at lower priority. Starter plan users can buy additional fast generations at $0.05 each. The slow queue typically takes 30 seconds to several minutes per image depending on load.
📋 Good to know
Sign up at lexica.art with email or Google, browse the prompt library immediately, and start generating on a free or paid plan.
Max plan supports private image generation. Free, Starter, and Pro plans may surface images in the public feed. Check Lexica's privacy terms for full details.
Starter ($10/mo) the moment you need commercial rights. Pro ($30/mo) if you want unlimited slow-queue generations and full commercial license.
Very low. Browse prompts, remix what inspires you, generate. The prompt library makes learning AI art dramatically faster than starting from a blank box.