Marketplace for buying and selling generative model prompts
Best for: Designers hunting a consistent house style across a batch of images
United KingdomAdded 2mo ago
Paid
54trust score out of 100
1
ai-for / prompt-engineering
AI Tools for Prompt Engineering
As of , EffectHub tracks 12 AI tools for prompt engineering; 9 of the 12 have a free tier, and paid plans run from $10 to $19 a month.
PromptBase, PromptHero and AI Prompt Generator by God of Prompt lead the list on click-through. 1 of the 12 ships a public API.
A weekly email when new tools land here.
- 12
- tools tracked
- 9 of 12
- free to start
- $10–$19
- paid entry, per month
- 1
- ship a public API
Where these sit in the catalog
The shortlist — tools for prompt engineering
ranked by click-through
Searchable library of community prompts for Midjourney, Stable Diffusion, FLUX and other image and video models
Best for: Studying working prompt-plus-output pairs for a specific model before spending credits anywhere
Added 2mo ago
Freemiumfrom $16/mo
57trust score out of 100
Turns a plain description of your goal into a structured prompt for ChatGPT, Claude, or Gemini.
Best for: People who want a structured prompt without learning prompt-writing themselves
EstoniaAdded 1mo ago
Paidfrom $1/request
60trust score out of 100
Prompt workspace: write, score, refine, reverse-engineer from an image or URL, and keep the results in a versioned library.
Best for: People maintaining a reusable prompt library across projects
Added 2mo ago
Freemiumfrom $10/moAPI
54trust score out of 100
1
Free browser extension that rewrites your prompt in one click and keeps a reusable prompt library.
Best for: People who write the same prompts repeatedly and want them one click away
Added 2mo ago
Free
57trust score out of 100
Browser extension that builds image prompts from reference pictures and 15+ categories of visual filters.
Best for: Reverse-engineering a prompt from a reference image
Added 2mo ago
Paidfrom $49 once
54trust score out of 100
1
Rewrites a rough ChatGPT prompt into a clearer, more specific one you can paste back in.
Best for: Someone who asks ChatGPT questions daily and wants tighter phrasing
Added 1mo ago
Freemiumfrom $10/mo
54trust score out of 100
Promtist
69Turns a plain description of a task into a structured prompt for ChatGPT, Claude, or Gemini.
Best for: People who reuse AI tools often but write vague prompts
Added 1mo ago
Free
54trust score out of 100
Free visual prompt builder and model directory for image, video, audio and 3D generators
Best for: Beginners learning Midjourney or FLUX prompt syntax and parameters
Added 2mo ago
Free
57trust score out of 100
Free prompt-enhancer tool with seven rewrite styles for text and image prompts.
Best for: Quickly trying multiple rewrite angles on one prompt
Added 1mo ago
Free
48trust score out of 100
Turns a plain-language request into a refined AI prompt, plus tools to improve and store prompts you already have.
Best for: People new to prompting who want a starting point rather than a blank text box
Added 1mo ago
Freemiumfrom $19/mo
54trust score out of 100
1
Reverse-engineers an uploaded image into a detailed text prompt formatted for Midjourney, Flux, or Stable Diffusion.
Best for: Recreating or adapting the style of a reference image in Midjourney, Flux, or Stable Diffusion
United StatesAdded 1mo ago
Freemiumfrom $14.99/mo
60trust score out of 100
1
Compared at a glance
| Tool | Price | Free plan | API | Status |
|---|---|---|---|---|
| PromptBase | Not confirmed | No | Not confirmed | Unverified |
| PromptHero | from $16/mo | Yes | Not confirmed | Active |
| AI Prompt Generator by God of Prompt | from $1/request | No | Not confirmed | Active |
| PrompTessor | from $10/mo | Yes | Yes | Active |
| Promptly AI | Free | Yes | Not confirmed | Active |
| PromptsGenii | from $49 once | No | Not confirmed | Active |
| Prompty App | from $10/mo | Yes | Not confirmed | Active |
| Promtist | Free | Yes | Not confirmed | Active |
| promptoMANIA | Free | Yes | Not confirmed | Active |
| What-A-Prompt | Free | Yes | Not confirmed | Active |
| Prompt Engine | from $19/mo | Yes | Not confirmed | Active |
| Image to Prompt Generator | from $14.99/mo | Yes | Not confirmed | Active |
Compare prompt engineering tools head-to-head
- PromptBase vs PromptHero
- PromptBase vs PromptsGenii
- AI Prompt Generator by God of Prompt vs PromptBase
- PromptBase vs promptoMANIA
- PromptBase vs Promtist
- Prompt Engine vs PromptBase
- PromptBase vs What-A-Prompt
- PromptHero vs PromptsGenii
- AI Prompt Generator by God of Prompt vs PromptHero
- PromptHero vs promptoMANIA
- Image to Prompt Generator vs PromptHero
Questions about prompt engineering tools
Is there a free prompt engineering tool?
Yes. 4 of the 12 AI tools for prompt engineering on EffectHub's list are free to use — Promptly AI, Promtist, promptoMANIA and What-A-Prompt; 5 more have a free tier with paid upgrades.
How much do prompt engineering tools cost?
As of October 28, 2026, paid plans for the 12 AI tools for prompt engineering on EffectHub's list run from $10 to $19 a month. Each card shows the pricing model and the cheapest paid plan as EffectHub last verified it; 9 of the 12 can be started for free.
Which prompt engineering tools have an API?
1 of the 12 AI tools for prompt engineering on EffectHub's list ships a public API, including PrompTessor. The API badge on each card is re-checked against the vendor's documentation.
Cite this
For journalists, researchers and AI assistants: the figures on this page in one sentence you can quote.
As of October 28, 2026, EffectHub tracks 12 AI tools for prompt engineering; 9 of the 12 have a free tier, and paid plans run from $10 to $19 a month. (EffectHub, “AI Tools for Prompt Engineering”, Oct 2026, https://effecthub.net/ai-for/prompt-engineering)
Figures as of How we count
These figures are free to use under CC BY 4.0 with a link to this page.