10 Best AI Prompt Generators in 2026 (Free & Paid)
Ranked list of the best AI prompt generators for images, text, and video in 2026 — with free options, pricing, and which model each tool works best with.
Free AI Prompt Generator — no sign-up required
Works with ChatGPT, Claude, Midjourney, FLUX, Sora, and more.
Choosing the right AI prompt generator saves hours of trial and error. The best tools understand your target model — whether that's Midjourney, FLUX, ChatGPT, or Sora — and structure your raw idea into an optimized, model-ready prompt.
We tested 20+ tools in 2026. Here are the 10 that actually deliver results.
What makes a great AI prompt generator?
The best prompt generators share four traits: model awareness (they know that Midjourney needs style tags while ChatGPT needs a role prefix), output consistency, speed, and the ability to work from either a text idea or an image reference.
1. PromptMake — Best Free All-in-One Generator
Free tier: 3 generations/day (no sign-up) · Paid: from $9/mo
PromptMake handles text, image, video, and audio prompts in one tool. The image-to-prompt feature analyzes any photo and outputs a model-calibrated prompt for Midjourney, FLUX, or DALL-E. Goal modes (Recreate, Style, Lighting, Variation) give you precise control without technical knowledge.
Best for: creators who switch between models, anyone who needs both text and image prompt generation in one place.
2. PromptHero — Best Prompt Inspiration Library
Free: browsing only · Pro: $9/mo
PromptHero is primarily a prompt search engine — a massive library of community-submitted prompts with images. It's excellent for inspiration but weak for custom generation. You search, not create.
Best for: finding what's already working in the community. Not great for creating net-new prompts from scratch.
3. MidJourney Prompt Generator (unofficial tools)
Several third-party tools specialize in Midjourney-specific syntax: --ar, --style raw, --chaos, --weird. The quality varies widely. Look for tools that stay updated with Midjourney v6 and v6.1 parameters.
4. PromptBase — Best Marketplace for Buying Prompts
Model: pay per prompt ($2–$10 each)
PromptBase lets creators sell polished prompts for Midjourney, ChatGPT, and DALL-E. High quality — but you pay for each prompt. Better for buying proven recipes than iterating on your own ideas.
Best for: professionals who need a specific output and want a tested template. Not cost-effective for high-volume creators.
5. Lexica — Best for Stable Diffusion Prompts
Free: search and limited generation
Lexica is a Stable Diffusion-focused prompt library and generator. Its search by image is genuinely useful for finding style references. Weak outside the SD ecosystem.
6. ChatGPT (prompting ChatGPT to write prompts)
Free (GPT-5.4) / Paid (GPT-5.5)
You can ask ChatGPT to write image or text prompts — and it does a decent job. But it requires knowing how to ask, doesn't stay updated on the latest model parameters, and produces inconsistent format across sessions.
Best for: experienced users. Beginners often get generic outputs without knowing which follow-up questions to ask.
7. PromptPerfect — Best for Prompt Optimization
Free tier: limited · Paid: from $9.99/mo
PromptPerfect focuses on taking an existing prompt and making it better. Strong optimizer, but less useful for generating prompts from scratch.
8. FlowGPT — Best Community Hub
Free with Pro tier
FlowGPT is a community library for sharing, remixing, and discovering ChatGPT and other LLM prompts. Less relevant for image models but strong for text/workflow automation prompts.
9. Stable Diffusion WebUI (A1111 / Forge)
Free (self-hosted)
The built-in prompt helpers in A1111 (wildcards, dynamic prompts extension) are powerful for Stable Diffusion power users but require local setup and significant technical knowledge.
10. Adobe Firefly Prompt Suggestions
Included with Creative Cloud
Firefly offers in-app prompt suggestions tuned to its own model. Limited to Firefly — no use for Midjourney or ChatGPT workflows.
How to choose the right tool
- Free budget + multiple models: PromptMake
- Community inspiration: PromptHero or Lexica
- Buying proven templates: PromptBase
- Stable Diffusion only: Lexica or A1111 wildcards
- Text/LLM prompts only: FlowGPT
The best tool is the one that matches your workflow. For most creators in 2026, a free all-in-one generator like PromptMake is the highest-ROI starting point.
Ready to generate your own prompts?
Free. No sign-up required. Works with all major AI models.