# FourCandles > FourCandles is an AI tools and skills platform that lets users design, test, and optimise AI prompts across every major model — GPT-4o, Claude, Gemini, and Perplexity — from one clean, fast workspace. Built for professionals, writers, developers, and anyone who takes AI seriously. ## About FourCandles is a web application (SaaS) that consolidates AI model access, prompt engineering, and learning into a single platform. Users sign in with Google or Replit and can immediately start chatting with any supported AI model, building reusable AI personas (Skills), running prompts side-by-side across multiple models, and tracking their progress through structured AI learning modules. The platform is built for people who use AI every day and want one clean interface instead of juggling multiple browser tabs. Every feature — from quick single-shot prompts to structured learning paths — is designed for speed and quality. Credits power the platform. Each AI request consumes credits, with different models costing different amounts. Every plan, including Free, gets access to all models and all features; the only difference is the monthly credit allocation. Top-up packs are available one-time and never expire. ## Who It Is For - Professionals and executives who use AI to write, research, and think - Prompt engineers and AI practitioners who want structured testing - Developers who need to prototype AI interactions quickly - Marketers, writers, and content creators who use AI daily - Teams who want a shared AI workspace without multiple subscriptions - Learners who want to improve their AI skills systematically ## Key Pages - Homepage: https://fourcandles.ai/ - Contact: https://fourcandles.ai/contact - Privacy Policy: https://fourcandles.ai/privacy - Terms of Service: https://fourcandles.ai/terms - Refund Policy: https://fourcandles.ai/refund - Cookie Policy: https://fourcandles.ai/cookies - Data Security: https://fourcandles.ai/data-security - Impressum: https://fourcandles.ai/impressum - Help Centre: https://help.fourcandles.ai --- ## Home Page ### Hero **Headline:** Write Better. Think Sharper. Prompt Like a Pro. **Subheadline:** Design, test, and optimise AI prompts across every major model, from one clean, fast platform built for people who take AI seriously. **Announcement bar:** Pay as you go with credits, or choose a monthly subscription, whichever suits you. ### Loadsamodels. Every tool. One workspace. Stop switching between AI tools. FourCandles brings Skills, direct model chats, structured prompting tools, and a learning journey into one clean, fast platform built for people who take AI seriously. ### Features **Skills** — Create named AI personas with custom system prompts and background knowledge. Every conversation starts exactly where you set it, with full persistent history. Examples: LinkedIn Content Writer, Python Code Reviewer, Socratic Business Coach, Executive Email Rewriter. **Quick Prompt** — Fire off a prompt to any model without friction. Instant results, no setup. Switch models on the fly and compare responses side by side. **Multi-Model Chat** — Send the same message to OpenAI, Claude, Gemini, and Perplexity. See how each model thinks differently, and pick the best answer. **Vibe Coding Helper** — A guided wizard that turns your vague idea into a structured, platform-ready development prompt for Replit, Cursor, Lovable, or Bolt. **AI Mastery Journey** — A gamified learning module that takes you from AI basics to advanced prompting techniques, with quizzes, badges, and real progress. **Socratic Prompt Tool** — Not sure what to ask? Answer a series of guiding questions and let the tool craft a high-quality, structured prompt for you. **Projects** — Group related chat sessions under a named project with shared instructions and background documents. Memory of past conversations is maintained automatically. ### Your AI. Your rules. Every time. (Skills section) Skills are named AI personas you create once and reuse forever. Set a system prompt, choose a model, and every conversation starts exactly how you want, with full persistent history. ### Pricing **Every plan unlocks every feature and every AI model. The only difference is how many credits you get each month.** | Plan | Price | Credits/month | |---|---|---| | Free | €0/month | 50 credits | | Starter (Most popular) | €10.99/month | 1,000 credits | | Pro | €32.99/month | 5,000 credits | All plans include: Skills (AI personas), Quick Prompt, Multi-model chat, Vibe Coding Helper, Socratic Prompt Tool, AI Mastery Journey, Image generation, Top-up credits available. **Top-up bundles (never expire):** - Starter Pack: 500 credits — €5.49 (€1.098 per 100 credits) - Value Pack: 1,500 credits — €13.99, save 15% (€0.933 per 100 credits) - Power Pack: 3,000 credits — €24.99, best value (€0.833 per 100 credits) ### Supported AI Models - **OpenAI:** GPT-4o, GPT-4o mini, GPT-4.5 Turbo, o1 Mini; DALL-E 3 for image generation, GPT Image 1 - **Anthropic:** Claude Sonnet 4.5, Claude Opus 4.5, Claude 3.5 Haiku - **Google:** Gemini 2.5 Flash, Gemini 1.5 Pro; Imagen 4 for image generation - **Perplexity:** Sonar Pro, Sonar, Sonar Deep Research (real-time web search with citations) ### Disclaimer FourCandles is an independent service and is not affiliated with, endorsed by, or a recognised business partner of OpenAI, Anthropic, Google, Perplexity, or any other AI provider. All product names, brand names, and trademarks referenced on this site belong to their respective owners and are used solely to describe the third-party APIs that power the FourCandles service. --- ## Contact **Get in touch** Have a question, a sales enquiry, or need support? Fill in the form below and we'll get back to you. We aim to respond within one business day. - General: hello@fourcandles.ai - Support: support@fourcandles.ai - Privacy: privacy@fourcandles.ai - Help Centre: https://help.fourcandles.ai Enquiry types: Sales, Support, Other. --- ## Privacy Policy (Summary) Last updated: 16 March 2026 FourCandles collects: account data (name, email via Google/Replit OAuth), usage data (prompts and AI conversations), credit/transaction data, and technical data (IP, session). We do not collect payment card details. Data is used to provide the service, authenticate users, process AI requests, manage credits, and respond to enquiries. Legal bases: contract performance, legitimate interests, legal obligation, consent. Third-party data sharing: Google (OAuth & Gemini API), Replit (hosting), OpenAI, Anthropic, Perplexity AI, Neon (database), Google Cloud Storage. We do not sell personal data. Your rights under UK/EU GDPR: access, rectification, erasure, restriction, portability, objection. Contact: privacy@fourcandles.ai. --- ## Terms of Service (Summary) Last updated: 16 March 2026 FourCandles is an AI prompt management platform with credit-based access. Tiers: Free (50 credits/month), Starter €10.99/month (1,000 credits), Pro €32.99/month (5,000 credits). Top-up credits never expire. Monthly credits reset monthly and do not roll over. Acceptable use: no illegal/harmful content, no credit circumvention, no reverse engineering, no automated scripts at scale. AI content: FourCandles acts as an interface to AI providers. Users are responsible for verifying AI-generated content. Governing law: England and Wales. --- ## Data Security All chat messages are encrypted at rest using AES-256-GCM before being written to the database. The encryption key is stored separately from the database. No other user or FourCandles administrator can read your conversations. Files you attach are processed in memory and never written to disk. Prompt content is not logged. FourCandles uses API tiers of all AI providers, meaning your data is not used to train AI models by default. --- ## Technology - Web application (React/TypeScript frontend, Node.js/Express backend, PostgreSQL database) - Requires account registration (Google OAuth or Replit Auth) - Works in any modern web browser, mobile-responsive, PWA-installable - Hosted on Replit, database on Neon (serverless PostgreSQL)