LinguAIst — AI Translate & Improve

Translate and improve text across supported websites using the AI account you already have. NEW IN 0.2.2: CLEARER CHATGPT SIGN-IN See plan-access guidance before connecting. If a verified account lacks permission to use its ChatGPT plan, LinguAIst keeps the account signed in and explains the limitation instead of treating it as a lost connection. You can explicitly request plan access or select an API-key provider. Rejected login codes now have clear guidance and a fresh sign-in path. Free ChatGPT accounts may not support connected-app plan usage. In that case, use another eligible account, OpenRouter, or an API key. LinguAIst does not automatically switch to paid API inference. CONNECT CHATGPT OR OPENROUTER Connect your ChatGPT account to use eligible plan access, or connect OpenRouter and choose from its free models. No LinguAIst subscription is required, and these account connections let you get started without manually entering a separate OpenAI API key. Looking for a free alternative for everyday translation and writing assistance? OpenRouter's “Free models only” filter helps you find models with zero input/output pricing. Free models have provider usage limits and can change or become unavailable. Paid OpenRouter models remain optional. ChatGPT account connection is experimental and uses your eligible ChatGPT plan allowance. Access depends on your account, supported models, and connected-app usage limits. An existing paid ChatGPT plan is not made free by the extension. You can also keep using your own OpenAI API key or a custom OpenAI-compatible endpoint. TRANSLATE AND WRITE WITHOUT SWITCHING TABS Select text to translate it inline. In editable fields, improve grammar, clarity, wording, and tone, then copy or replace the text. Add your own instruction to make a draft shorter, friendlier, or more formal. KEY FEATURES • Inline translation across websites. • Writing improvements and contextual rewriting in editable fields. • Optional surrounding page context, including a Gmail context adapter. • Streaming results. • ChatGPT and OpenRouter browser sign-in. • OpenRouter model picker with a free-only filter. • Available-model selectors for OpenAI and compatible custom endpoints. • Separate connections and model preferences for each provider. • Autosaved settings and masked saved API keys. • Review, refine and accept suggestions back into the original editable field. • Connection and translation tests in Settings. • Searchable target-language suggestions and custom language codes. • Interface in 12 languages: English, Russian, Spanish, Ukrainian, German, French, Italian, Portuguese, Polish, Dutch, Simplified Chinese, and Arabic, with right-to-left layout for Arabic. • OpenAI API keys and custom or self-hosted OpenAI-compatible endpoints. • No LinguAIst account or subscription required. GET STARTED 1. Open LinguAIst Settings and choose ChatGPT, OpenRouter, OpenAI, or a custom provider. 2. Sign in or enter your API credentials, then choose a model. For OpenRouter, enable “Free models only” to browse free options. 3. Choose your translation language. Settings save automatically. 4. Select text on a webpage, or select text in an editable field to improve your writing. PRIVACY AND PROVIDER COSTS Text is sent directly from the extension to your selected AI provider. OpenRouter may forward requests to a downstream model provider. LinguAIst does not run an intermediary backend that receives your submitted page content. Writing-improvement requests may include limited surrounding content when page context is enabled. Translation uses the selected text. Handle personal and confidential information carefully; provider retention and training policies apply. LinguAIst itself has no subscription fee. Provider charges, account eligibility, usage limits, and availability still apply. API-key providers may receive a small connection warmup that can consume quota or incur charges. Website access is needed to translate selected text and improve writing wherever you work. Credentials are stored locally in trusted extension storage. Disconnect removes the local credentials; manage external authorizations in the provider's own settings. Editable-field compatibility varies by website. Short-text Accept and sent-content checks passed in Outlook Web, Teams, Gmail and WhatsApp Web; formatting, attachments, mentions and all Undo scenarios are not guaranteed. Browser-protected pages and editors that prevent extension interaction may be unavailable. LinguAIst is an independent extension and is not affiliated with or endorsed by OpenAI or OpenRouter.