How much does Lexica cost?

Paid plans start at $8/month for Starter, $24/month for Pro, and $48/month for Max. Additional generations cost $0.05 each, and there is no permanent free generation tier.

What makes Lexica's prompt library unique?

It hosts the largest public, searchable archive of Stable Diffusion images and prompts on the web, allowing users to browse millions of community generations with exact prompts, seeds, and parameters.

Is Lexica suitable for developers building applications?

While it offers a public REST API for searching its image and prompt index, the generation API is not publicly documented and the model is closed-source, making it less suitable as a building block for custom apps.

Lexica

Text-to-image generator with a massive searchable prompt library built on its proprietary Aperture model.

Paid· Starter $8/mo, Pro $24/mo, Max $48/mo; $0.05 per extra generationImage GenerationLexica Aperture (proprietary) + Stable Diffusion6.8 / 10

Visit website →

In short

Lexica generates high-resolution images via its proprietary Aperture model and offers a massive, free-to-browse archive of Stable Diffusion prompts. It is best for creators who want fast text-to-image results and prompt discovery without managing local GPUs.

Best for

Pick Lexica if you want fast, attractive text-to-image generations plus a giant prompt library to learn from without running your own GPU.

Skip if

Skip it if you need open weights, a documented generation API, or a permanent free tier for casual use.

Lexica is an AI image generation platform best known for two things: its in-house Aperture diffusion model for text-to-image generation, and the largest public, searchable archive of Stable Diffusion images and prompts on the web. You type a description, get high-resolution images, and can browse millions of community generations with their exact prompts, seeds, and parameters to reverse-engineer styles you like.

The pricing is aimed squarely at hobbyists and indie creators: $8/mo Starter (1,000 fast generations), $24/mo Pro (3,000 fast plus unlimited slow), and $48/mo Max which unlocks private images. All paid plans include commercial licensing, custom aspect ratios, and image-to-image uploads, with overage generations at $0.05 each. There is no permanent free generation tier, but the prompt search and gallery are free to browse.

Lexica also exposes a public REST API (GET /api/v1/search) that returns JSON results from its image+prompt index, which is handy for prompt-engineering tools and Stable Diffusion research even if you never pay for generations. The model is closed-source and the generation API is not publicly documented, so this is a product for end users rather than a building block for your own app.

Editor's take

Lexica nailed prompt search before anyone else and parlayed that traffic into a credible generator. Aperture is not Midjourney, but at $8-$24 it is a fair deal for creators who care more about output than fine-grained ComfyUI-style control. The prompt index alone is worth bookmarking.

— The AI Tool Bible editorial team

Pros

✅ Largest searchable library of Stable Diffusion prompts and seeds anywhere
✅ Proprietary Aperture model produces clean, photoreal results out of the box
✅ Commercial licensing included on all paid tiers
✅ Public search API is free and easy to integrate

Cons

⚠️ No persistent free generation tier; lower plans expose your images publicly
⚠️ Generation API is not publicly documented for third-party apps
⚠️ Closed-source model with less control than self-hosted SD or Flux

Use cases

text-to-imageprompt-discoveryimage-to-imagestyle-referencestock-imagery

Frequently asked

How much does Lexica cost?: Paid plans start at $8/month for Starter, $24/month for Pro, and $48/month for Max. Additional generations cost $0.05 each, and there is no permanent free generation tier.
What makes Lexica's prompt library unique?: It hosts the largest public, searchable archive of Stable Diffusion images and prompts on the web, allowing users to browse millions of community generations with exact prompts, seeds, and parameters.
Is Lexica suitable for developers building applications?: While it offers a public REST API for searching its image and prompt index, the generation API is not publicly documented and the model is closed-source, making it less suitable as a building block for custom apps.
Do paid plans include commercial rights?: Yes, all paid plans include commercial licensing, custom aspect ratios, and image-to-image uploads.