ChatKit is a customizable chat interface supporting multiple AI models – OpenAI, Gemini, Azure, and custom models – using either a user’s own API key or purchased credits. It adds real-time features standard ChatGPT lacks: using URLs directly as chat context, full-text search across chat history, and voice input powered by the Whisper API alongside text-to-speech output.
Supporting bring-your-own-API-key alongside optional credits, priced at a flat 1:1 ratio with no markup, is a meaningfully different pricing philosophy than a subscription-locked AI chat app – a user already paying for API access directly avoids paying twice, while someone without their own key can still get started with a simple, transparently-priced credit purchase. Storing API keys locally on-device rather than on a server is also a real privacy design choice for a tool that otherwise needs sensitive credentials to function.
ChatKit works across desktop and mobile browsers, targeting users wanting an enhanced ChatGPT experience without vendor lock-in. Pricing: one-time credit purchases (a flat $5 = $5 in credits, no subscription), or bring your own API key; a Team plan runs $250 (50 devices, unlimited license keys), with additional devices at $8 each.
