OnlyPrompts is a prompt library platform offering over 150,000 ready-made AI prompts covering more than 37,000 tasks across marketing, sales, finance, HR, IT, and other professional domains. Built for marketers, small business owners, virtual assistants, and content creators who want to skip the trial-and-error of prompt engineering, it combines a searchable prompt catalog with a built-in multi-model AI assistant and side-by-side testing tools on a single platform.
How OnlyPrompts Works
OnlyPrompts organizes its collection into task-specific prompt packs that users can browse by profession or use case. Each prompt comes with pre-filled placeholders for the user's specific inputs, making it straightforward to adapt a template to a real scenario without starting from a blank chat. The platform includes a config toolbox for adjusting prompt parameters such as tone, length, and output format, as well as a side-by-side comparison view where users can test two prompt variations against each other and save the better result. Once a prompt is selected, users can deploy it directly through the built-in AI Assistant, which supports GPT-4o, Claude 3 Sonnet and Haiku, Gemini 2.0 Flash, and DALL-E for image generation.
Key Features
- 150,000+ prompt library covering nine professional categories including marketing, sales, finance, administration, customer service, data analysis, R&D, HR, and IT. New prompts are added monthly to keep the collection current.
- Side-by-side prompt testing lets users compare two prompt variations simultaneously, evaluate outputs, and save the more effective one to a personal collection -- eliminating the need to copy-paste between multiple browser tabs or chat windows.
- Built-in multi-model AI Assistant supports GPT-4o, Claude 3 Sonnet, Claude 3 Haiku, Gemini 2.0 Flash, and DALL-E. Users can switch between models without leaving the platform and use AI credits to chat directly within the app.
- Prompt Optimizer refines basic prompts into more detailed, structured versions automatically, helping users get better outputs from any model without manual prompt engineering expertise.
- Custom folders and organization allow users to save, categorize, and quickly access favorite prompts, building a personal prompt library over time.
- 15+ AI plugins extend the Assistant with capabilities such as web search, file browsing, and targeted search, giving prompts access to real-time information and uploaded documents.
- Image Generator with over 150 prompt templates across styles like cyberpunk, fantasy, and sci-fi, integrated with DALL-E for generative image creation directly on the platform.
- Text-to-speech and file upload support multimodal input and output, allowing users to work with audio and document files alongside text prompts.
Pricing and Plans
OnlyPrompts offers a 5-day free trial with full platform access. After the trial, users choose from three subscription tiers billed monthly or annually:
| Plan | Monthly | Annual (per month) |
|---|
| Basic | $17 | $10.20 |
| Pro | $41 | $24.60 |
| Advanced | $129 | $77.40 |
A lifetime deal is also available through AppSumo, starting at $69 for one code (3,000 monthly AI credits, 5 image generations per month) and stacking up to three codes for higher limits. One-time credit purchases provide an alternative for users who prefer to buy credits as needed rather than commit to a subscription. New users can apply the HELLO40 code for 40% off individual prompt packs and monthly subscriptions for the first six months. OnlyPrompts provides a 7-day money-back guarantee on direct website purchases.
Pros and Cons
Pros:
- Massive prompt library spanning nine professional categories with monthly updates, reducing the time spent on prompt research and drafting.
- Side-by-side testing and comparison eliminates the friction of juggling multiple AI chat windows to find the best prompt variant.
- Multi-model support in a single interface means users can test the same prompt across GPT-4o, Claude, and Gemini without switching platforms.
- 5-day free trial and 7-day refund policy lower the risk of trying the platform before committing.
- Prompt Optimizer automates the refinement process, making the library useful even for users with limited prompt engineering skills.
Cons:
- The web application can be noticeably slow during search and browsing, which impacts the workflow for users who need to find prompts quickly.
- Adding custom, user-written prompts to personal folders is not yet supported, so the platform functions primarily as a consumption library rather than a prompt management tool.
- Recent product updates have been sparse, with the public roadmap showing little activity since mid-2025, raising questions about ongoing development momentum.
- The Image Generator is limited to creative and entertainment styles with no templates for business or marketing visuals, reducing its practical value for professional users.
Who Should Use OnlyPrompts
OnlyPrompts fits professionals and small teams who regularly use AI chatbots for work and want a curated starting point instead of writing prompts from scratch. Marketers drafting campaign copy, sales teams working on outreach sequences, and virtual assistants handling varied client tasks can benefit from the categorized library and testing tools. The platform is less suited for advanced prompt engineers who need fine-grained control over prompt architecture, users who primarily want to organize their own custom prompts, or teams that require fast, low-latency search within a large prompt database.
