Capsule by Wispr (renamed and evolved into Wispr Flow) is an AI-powered voice dictation system that works across every application on Mac, Windows, iPhone, and Android. Developed by Wispr AI, the tool transforms natural speech into clean, polished text in any text field — email clients, messaging apps, documents, IDEs, CRM systems, and more. The company raised $81 million to build what they describe as the Voice OS, and the product is now used by teams at Amazon, Nvidia, Notion, Vercel, Replit, Clay, and Rivian.
How It Works
Capsule (Flow) runs as a native desktop and mobile application that sits in the background and activates on demand. When a user speaks, the AI processes the audio locally and transcribes it directly into whichever text field is active. Unlike basic operating-system dictation, Capsule applies an AI editing layer that removes filler words such as "um" and "uh," corrects self-corrections ("meet at 2pm… actually 3pm" becomes "meet at 3pm"), inserts punctuation naturally from vocal tone and pauses, formats numbered lists from spoken cues, and spells uncommon names correctly by reading on-screen context. The system supports 100+ languages and even works when the user is whispering, making it usable in shared or quiet spaces.
Key Capabilities
Capsule adapts to each user through three personalization systems. A personal dictionary automatically learns unique spellings — names, industry jargon, product terms — whenever a user corrects a transcription. A snippet library lets users create voice shortcuts for frequently used text such as scheduling links, support replies, FAQs, and common prompts. A styles feature adjusts capitalization and punctuation to match a user's preferred tone for work versus personal messages, currently available in English on desktop.
For developers, Capsule recognizes programming syntax, preserves camelCase and snake_case formatting, handles CLI commands, and automatically tags filenames when used with Cursor or Windsurf. For teams, shared dictionaries and snippets ensure consistent terminology across an organization, while usage dashboards show adoption metrics like total words transcribed and top applications used.
Use Cases
Capsule serves a wide range of professionals. Developers use it for dictating code, writing commit messages, and prompting AI coding assistants. Customer support representatives resolve tickets faster by speaking replies directly into their ticketing systems. Sales professionals follow up on leads and personalize outreach without typing. Content creators draft scripts, respond to comments, and capture ideas on the go. Students use it for note-taking and essay drafting. Legal professionals dictate case notes and client records with HIPAA-compliant transcription. Leaders and executives unblock their teams by communicating faster across Slack, email, and documents.
Integrations
Capsule works with virtually any application that accepts text input. This includes email clients such as Gmail, Outlook, and Superhuman; messaging platforms such as Slack, WhatsApp, Telegram, Messenger, and Signal; productivity tools including Notion, Linear, Things, and Todoist; IDEs such as VS Code, Cursor, and Replit; AI tools including ChatGPT, Claude, and Perplexity; social platforms such as Instagram, X (Twitter), and Snapchat; and many others including Google Docs, Apple Notes, Obsidian, Grammarly, Figma, GitHub, Canva, Evernote, Zoom, and Arc.
Pricing
Capsule (Flow) offers a free Basic tier that provides 2,000 words per week on desktop and 1,000 words per week on iPhone, along with the personal dictionary, snippets, 100+ language support, privacy mode, and HIPAA-ready compliance. The Pro tier at $12–$15 per user per month removes word limits and adds command mode for voice editing, early access to new features, and team collaboration tools. Enterprise plans include SOC 2 Type II and ISO 27001 compliance, enforced HIPAA and zero-data-retention modes, SSO/SAML, dedicated support, and bulk pricing discounts.
Privacy and Security
Capsule includes a privacy mode with zero data retention, ensuring transcriptions are not stored on Wispr's servers. The platform is HIPAA-ready on all plans and achieves SOC 2 Type II and ISO 27001 compliance on Enterprise plans. Users maintain control of their data through settings in the desktop application.
Affiliate Program
Wispr AI offers an affiliate program for Capsule (Flow) through the Dub platform at partners.dub.co/flow. Affiliates earn 25% recurring commission on the first year of referred customer payments, with a 60-day attribution cookie and payouts starting at a $100 threshold.
