AlphaMoatによると、2026-09時点でChrome拡張機能VoicePen AIのユーザー数は15(前月比 +15.4%)で、9,324件のAIブラウザ拡張機能中8,138位、音声では333件中321位です。
VoicePen AIとは
The fastest way to write, think, and capture ideas on the web Use your own OpenAI key (BYOK). VoicePen AI is a voice-powered dictation assistant and context-aware AI notebook that lives wherever you browse - Gmail, Notion, Slack, Google Docs, Twitter/X, and any web-based tool.
───────────────────────────────────── AI DICTATE — Speak. Write. Done. ─────────────────────────────────────
Hold your keyboard shortcut (Alt+D on Windows, Option+D on Mac), speak your thoughts, and watch VoicePen instantly transcribe and refine them into polished prose — directly in the page you're on.
- 5 output modes: Default, Email, Notes, Casual, Professional
- Real-time dynamic refinements as you speak
- Change style mid-dictation by voice ("make it more formal", "rewrite as an email")
- Voice editing commands ("delete the last sentence", "make this shorter", "summarize what I just said")
- AI suggestions read aloud while you dictate
- Snippets: speak a trigger phrase to auto-expand frequently used text • Output in any of 40+ languages — dictate in one language, write in another
- Works inside any text field — no copy-pasting required
───────────────────────────────────── AI NOTES — Capture knowledge without breaking your flow ─────────────────────────────────────
Trigger Notes AI (Alt+N), speak your note, and it handles the rest. It reads the page, understands your intent, and files your note exactly where you want it.
ストアの説明の続きを表示▾
- Voice-first capture — speak and it saves instantly
- Smart page capture — summarize articles or save your selected text
- AI creates new note categories on the fly based on what you say
- Split a long article into multiple topic notes with one voice command
- Generate Q&A study cards from any page ("create 10 learnable notes from this article")
- Attach the page URL and title to any note automatically
- Color-coded categories, fuzzy search, sort by date
- Everything stored locally — browse and review your notes from the extension
───────────────────────────────────── BYOK — BRING YOUR OWN AI API KEY ─────────────────────────────────────
Use different models - OpenRouter integration coming soon
VoicePen AI does NOT charge a monthly AI usage fee. You connect your own OpenAI API key and pay OpenAI directly — pennies on the dollar compared to any bundled AI SaaS subscription.
Real-world cost: I used VoicePen AI every day for a full week and spent $0.05 in OpenAI API charges. That's not a typo. Typical AI tools bundle AI access into a $10–$20/month subscription. With BYOK you cut that cost by 95% or more.
Why BYOK is the smarter choice:
- Your requests go directly from your browser to OpenAI — no middleman
- Faster responses — no round-trip through a third-party relay server
- Full control over your spending — set usage limits directly in your OpenAI account • 100x+ lower cost compared to typical bundled AI services
───────────────────────────────────── PRIVACY FIRST — Your data never touches our servers ─────────────────────────────────────
Every piece of sensitive data stays on your device:
- API keys are encrypted with AES-256-GCM and stored in your browser's local storage — they are never sent to our servers or any third party
- Your notes and dictation history are stored locally in your browser
- Voice requests travel directly from your browser to OpenAI — VoicePen's servers are never in the loop
- Your license key is encrypted and stored locally — never exposed
───────────────────────────────────── WORKS EVERYWHERE ON THE WEB ─────────────────────────────────────
VoicePen AI injects into any webpage. No context-switching, no copy-pasting.
───────────────────────────────────── ONE-TIME PAYMENT — No subscription. Ever. ─────────────────────────────────────
Pay once. Use forever.
- Lifetime access with all future feature updates included
- No monthly fees, no annual renewals, no surprise billing
- Instant activation with your license key
- Free trial available to get started — no credit card required
───────────────────────────────────── REQUIREMENTS ─────────────────────────────────────
- OpenAI API key — required for transcription and AI features (get one at platform.openai.com)
- Google Cloud TTS API key — optional, used for voice readback of AI suggestions (generous free tier: ~16 hours/month)
拡張機能の情報
ユーザー数の推移
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+ 比較データ月:2026-09 · ユーザー数と評価はChromeウェブストアの公開データを月単位で集計したものです。詳しくはデータの方法論をご覧ください。