ChatKitt — One Chat, Every AI Model

ChatKitt is a lightweight, self-hosted multi-model AI chat platform you install on your own server. One clean chat window talks to every major provider — ask once and compare answers from OpenAI, Anthropic Claude, Google Gemini, xAI Grok, DeepSeek, Mistral, Groq and OpenRouter, side by side.

After installation, you control everything: user accounts, subscription plans, credits, payment gateways, branding, themes, providers and models. Connect your own AI provider/API key and decide how users access AI features through plans and credits — turn ChatKitt into your own AI SaaS.

Built in pure PHP (no heavy framework, no Node build step), it installs in minutes and runs on cheap shared hosting or a VPS.

Live Demo: https://chatkitt-demo.kittapps.com

Demo Accounts

• Admin — Email: [email protected] · Password: password
• User — Email: [email protected] · Password: password

The live demo is read-only. Create, update, delete, upload, payment, and AI sending actions are disabled, but you can explore the full app and admin panel.

Chat App

• One chat, every model — pick multiple models per message and compare answers in side-by-side tabs.
• Latest models — GPT-5.5, Claude Fable 5, Gemini 3.5 Flash, Grok 4.3, DeepSeek V4, Mistral Large 3 and more, editable anytime.
• Streaming replies — token-by-token responses, with retry and add-more-models on any answer.
• Rich rendering — Markdown, syntax-highlighted code, math (LaTeX), and live diagrams & charts (flowcharts, sequence, pie).
• File, image & voice input — attach documents, send images to vision models, dictate with the mic.
• Folders, search & history — organize chats and search across titles and messages.
• Guest mode — let visitors try the chat with daily limits before signing up.
• Themes — light/dark styles and custom accent colors.

Admin Panel

• Users — manage accounts, roles, plans, and credits.
• AI Providers — connect provider API keys (stored encrypted).
• Models & Pricing — add, rename, reprice and toggle models and vision support.
• Chat & Limits — default models, max models per message, uploads, guest limits, suggested questions.
• Plans & Credits — subscription plans and credit packs.
• Analytics — revenue, AI usage, cost, and failures.
• Site Settings — branding, appearance, SMTP, prompt, queue and security.

Payments & Billing

• Subscriptions — monthly and yearly paid plans.
• AI Credits — plan credits and top-up credit packs.
• Gateways — Stripe, PayPal, and Razorpay, with signed webhooks.

Public Pages

• Privacy, Terms and Contact pages, with a contact form.
• Fast-loading, responsive UI.

• PHP 8.2+ with the common extensions (pdo, pdo_mysql, curl, json, mbstring)
• Database: MySQL 8 or MariaDB 10.4+
• Works on shared hosting, VPS, or any PHP host (Apache or Nginx), with the web root pointed at /public
• SMTP email account for sending emails (verification, password reset, contact)
• AI provider API key for AI features (OpenAI, Gemini, Claude, etc.)

Full HTML installation documentation is included with the product files. After download, open the browser-based installer at /install and follow the wizard, or follow the included manual guide.

If you have any questions before purchasing, feel free to ask in the support section. We are happy to help you understand if ChatKitt is the right fit for your project.

Basic free installation support is available after purchase. If you face an issue while installing the product on a server that meets the requirements, contact us with your purchase details and the needed server information, and we will help you check it.

After purchase, we also provide friendly support for reasonable product issues, setup questions, and general guidance.