ChatGPT, Claude and Codex-style chat inputs in one React component

Show HN: ChatGPT, Claude and Codex-style chat inputs in one React component

ChatGPT, Claude and Codex-style chat inputs in one React component is active in the show hn launch space.

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Hi HN,I built Prompt Area — a contentEditable rich text input component for React, designed specifically for AI chat interfaces.The problem: if you're building an AI chat UI, your input needs @mentions (to reference context), /commands (to trigger actions), #tags, inline markdown, file attachments, and undo/redo. Existing options are either too limited (react-mentions only does mentions) or massive overkill (Tiptap, Lexical, and Plate are full document editors built on ProseMirror/Slate — way too heavy for a prompt input).Prompt Area sits in the middle. It uses a segment-based model (array of {type, text} objects) on top of contentEditable, with all logic extracted into a pure engine file th

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Website: prompt-area.com/styles