Otter.ai
Category: Voice / Speech AI
An AI-powered meeting assistant that generates real-time transcriptions, automated summaries, and action items for voice conversations. Otter.ai was founded in 2016. The company is led by Sam Liang. Based in Mountain View, California, USA. Team size: 101-250. Total funding raised: $73M. Latest round: Series B. Key investors include ["Spectrum Equity","Horizons Ventures","GGV Capital","Draper Associates","Fusion Fund"].
- Founded
- 2016
- Headquarters
- Mountain View, California, USA
- Team size
- 101-250
- Total funding
- $73M
Value proposition
To enhance meeting productivity by automating note-taking, enabling users to stay engaged in conversations, and providing easily accessible, searchable, and shareable records of discussions.
Products and solutions
["Otter Meeting Agent: Voice-activated AI agent that participates in meetings, answers questions, and completes tasks in real-time.","Otter Sales Agent: Provides real-time coaching to sales reps during customer calls.","Otter SDR Agent: Multimodal autonomous agent that conducts live product demos with prospects autonomously.","Otter AI Chat: Search across meetings and connected apps to answer questions and create follow-ups.","Enterprise Suite: Public API, MCP Server connecting Otter data to external AI models (Claude, ChatGPT), advanced admin controls.","Desktop App: Bot-free recording and meeting management.","Real-time Transcription: Live transcription with speaker identification in multiple languages.","Automated Meeting Summaries: AI-generated summaries with action items."]
Unique value
Otter.ai's uniqueness lies in its proprietary AI that provides high-accuracy, real-time transcription with speaker identification (diarization). Its OtterPilot feature automates the entire process of capturing and summarizing meeting intelligence, distinguishing it from basic transcription services.
Target customer
Professionals, students, educators, and teams across various organizational sizes, from individuals and small businesses to large enterprises.
Industries served
["Technology/Software","Education","Media and Journalism","Sales and Marketing","Consulting"]
Technology advantage
The core technological advantage is its advanced, proprietary speech-to-text and natural language processing (NLP) engine, trained on a vast dataset of voice conversations. This allows for continuous improvement in accuracy and feature development. The business advantage stems from a strong freemium model that drives widespread adoption and a powerful network effect through integrations with major communication platforms.
How they differentiate
Otter.ai differentiates itself through its real-time transcription and AI-powered meeting summary capabilities, delivered via a user-friendly interface. Its core feature, OtterPilot, can automatically join meetings on platforms like Zoom, Google Meet, and Microsoft Teams to record, transcribe, and generate summaries, making it highly accessible. The company employs a freemium, bottom-up growth model that encourages wide adoption by individuals, which then spreads within organizations.
Main competitors
["Descript","Gong","Verbit"]
Key partnerships
["Zoom: Deep integration for live transcription and post-meeting notes.","Microsoft Teams: Partnership to bring Otter.ai's transcription and summary features to Teams meetings.","Google Meet: Integration for recording and transcribing meetings.","Dropbox: Allows for the automatic syncing of audio and text files.","Slack: Integration to share meeting notes and summaries directly into Slack channels.","NTT DOCOMO: Strategic investment and partnership to expand into the Japanese market.","HubSpot: Integration to log meeting transcripts and push sales insights to CRM.","Salesforce: Automatically log transcripts and insights.","Jira: Send key takeaways and action items from conversations.","Notion: Sync transcripts, notes, and key takeaways.","Asana: Turn meeting notes into action items with deadlines.","MCP Server integration with Claude and ChatGPT for deeper analysis."]
Notable customers
["Amazon","IBM","NBC","UCLA","Glacier Media","Aiden Technologies"]
Major milestones
["Surpassed $100M ARR in March 2025.","Launched industry-first AI Meeting Agent suite (Otter Meeting Agent, Sales Agent, SDR Agent) in March 2025.","Launched Enterprise Suite with Public API, MCP Server, and advanced admin controls in October 2025.","Achieved HIPAA compliance in July 2025.","Expanded globally with French, Spanish, and Japanese language support in 2025.","Surpassed 35 million global users and 1 billion cumulative meetings processed.","Generated over $1 billion in customer ROI."]
Growth metrics
As of December 2025, Otter.ai surpassed $100M ARR, with over 35 million global users and over 1 billion total cumulative meetings processed. The company has generated over $1 billion in customer ROI.
Market positioning
Otter.ai is positioned as a leading AI-powered meeting assistant and transcription service. It targets a broad audience, including professionals, students, and enterprise teams, aiming to enhance productivity by making voice conversations searchable and actionable. It has established a strong brand presence in the real-time transcription market for virtual and in-person meetings.
Geographic focus
While Otter.ai serves a global user base, its primary market focus is North America and other English-speaking regions. The competition is also global, with many key players targeting the same lucrative markets in North America and Europe.
Patents and IP
Specific patent information is not publicly detailed, but the company's competitive edge is built on its proprietary AI and machine learning algorithms for transcription and NLP.
About Sam Liang
Former architect at Google, where he led the engineering team for Google's location services, including the creation of the 'blue dot' in Google Maps. He also founded and served as CEO of Location Labs, a mobile security company acquired by AVG Technologies for $220 million in 2014.
Official website: https://otter.ai