Claude Ui

ClaudeUI is an unofficial web interface for chatting with Anthropic's Claude models, built for developers who want more control than the official app provides. It adds conversation branching, support for bringing your own API key through OpenRouter, and a visible usage counter, and it states clearly that it is not affiliated with Anthropic. The product targets developers and heavy users who want to explore alternatives within a single conversation and keep track of their limits. Branching lets users fork any message into a new thread without losing the original. Users can switch between Claude Sonnet generations from 3.7 to 4.6 and Haiku models, including thinking modes, and export their full conversation history. The platform plan uses a fixed daily message cap that resets at midnight UTC instead of a rolling window, with a real time counter showing exactly how many messages remain. File uploads are limited to 10 MB, smaller than the official app's 30 MB allowance, which the site itself notes in its comparison table. Pricing has two tiers. Free plus BYOK costs $0 per month: users add their own OpenRouter key and chat without platform limits, with model usage billed directly by OpenRouter. Pro costs $20 per month and includes 50 messages per day on the platform, all listed Claude models, branching, 10 MB uploads, the usage counter and the option to use your own key, with cancellation at any time.