Listen to Microsoft Copilot Answers
CastReader reads Microsoft Copilot responses aloud with natural voices and word-by-word highlighting. Works on Chrome and Firefox — no need to switch to Edge or pay for Copilot Pro.
Three key takeaways: First, revenue grew 18% year-over-year, driven mostly by the cloud services segment. Second, operating margin expanded by 2 percentage points after a round of AI infrastructure cost optimizations. Third, the company revised its full-year guidance upward by roughly 4%, signaling confidence in Q4 demand.
Reads the answer — skips the attached file name and metadata
How CastReader Works with Copilot
Natural reading for Microsoft Copilot on whichever browser you use
Browser-Agnostic
Works on Chrome, Firefox, and Edge
Microsoft Copilot's native read-aloud is limited to Copilot Pro and the Edge sidebar. If you use Chrome or Firefox, you get nothing. CastReader plugs the gap — same one-click listen experience on every Chromium browser, Firefox, and of course Edge.
Listen Button on Every Answer
🔊 Per-Response, Not Per-Conversation
A small Listen button appears next to every Copilot reply on copilot.microsoft.com. Click to hear just that answer — not the whole thread. Works for short answers, long explanations, and multi-part responses.
Handles Attached Files
Reads the Answer, Not the File Metadata
When you attach a PDF, DOCX, or image to Copilot, the conversation shows the file name and icon alongside your prompt. CastReader's Copilot extractor skips the attachment UI so you only hear the answer — not 'Q3-2026-financial-report dot PDF' being spelled out.
Natural Voices
40+ Languages, No Robotic Accent
Powered by the Kokoro TTS model. Long Copilot answers — meeting summaries, report drafts, email rewrites — sound natural enough to listen to for an hour straight without fatigue.
Frequently Asked Questions
Everything you need to know about listening to Copilot with CastReader
Does Microsoft Copilot have a built-in read-aloud feature?
Partially. Copilot in Edge has a sidebar read-aloud for some responses, and Copilot Pro adds voice in the mobile app. But the free copilot.microsoft.com web experience on Chrome or Firefox has no read-aloud. CastReader fills that gap with a consistent 🔊 Listen button on every response, on any browser.
Do I need Copilot Pro or a Microsoft 365 license to use this?
No. CastReader works with the free tier of Copilot. You use Copilot normally — free or paid — and CastReader reads whatever response appears on the page. No extra Microsoft license needed for the read-aloud.
Does it work with Microsoft 365 Copilot in Word, Excel, or Outlook?
CastReader is a browser extension, so it works in browser-based Copilot experiences: copilot.microsoft.com, the Copilot sidebar in Edge, and Copilot-integrated web pages. The desktop Word/Excel/Outlook Copilot panels are native apps and are outside the browser's scope.
Does it work with Copilot's image attachments?
Yes. When you upload an image and ask Copilot a question, CastReader reads the text response and skips the image attachment UI. The answer is what gets read — not the file name or 'Image uploaded' metadata.
Does it work with all Copilot models (GPT-4, GPT-5, o1)?
Yes. CastReader reads the rendered page, so whichever model Copilot is using — GPT-4, GPT-5, or the reasoning model — the assistant's response text is what gets read aloud. Model swaps don't require any extension update.
Can I listen to shared Copilot answer links?
Yes. Public Copilot share links (generated from the Share button on an answer) work with CastReader. Recipients just need CastReader installed — no Microsoft login required on their side for public shares.
Is it free?
Completely free. No API key, no usage limits, no account required. Install the Chrome extension and start listening.
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Start Listening Now
Completely free. No signup. No Copilot Pro needed. Install and start listening to Microsoft Copilot on any browser.