AI Word Explainer

AI Word Explainer — look up anything, then keep asking Select a word, term, abbreviation, or short phrase on any webpage, click the floating "AI" button, and get a concise explanation that fits the current context. As effortless as a dictionary — but it actually understands the page you're reading. Key features 🔍 Select-to-explain Triggered by text selection; the surrounding paragraph and page title are included automatically for context-aware answers Streaming output — the answer appears word by word in real time 💬 Conversational popup Ask follow-up questions right inside the popup (multi-turn chat) without leaving the page One-click regenerate and one-click copy 🤖 Four AI providers, bring your own key Supports Claude (Anthropic), OpenAI, DeepSeek, and Gemini (Google) Independent per-provider settings: API endpoint (custom proxies supported), API key, model, and reasoning effort Model lists are fetched live from each provider's official API — no manual typing ⚙️ Flexible configuration Global explanation language: Simplified/Traditional Chinese, English, Japanese, Korean, French, German, Spanish, Russian Global extra prompt (e.g. "always add an example sentence") to personalize the style UI available in 6 languages, follows your browser by default 🔒 Privacy first Your API keys and settings are stored only in your local browser — never uploaded to any server Selected text is sent only to the AI provider you configured, and only when you click the button No analytics, no tracking, no ads Requirement: you need your own API key from at least one supported AI provider (entered on the extension's settings page). Great for: language learners, developers reading docs, researchers reading papers — anyone who keeps running into unfamiliar words and terms.