AI Note Taker for Phone Calls — Transcribe Any Call
Capture every phone conversation. These AI tools record, transcribe, and summarize your calls automatically.
The Challenge of Transcribing Phone Calls — And How CFAI Solves It
Transcribing a phone call is harder than transcribing a video call. Most AI note takers join as a bot — which only works for video conferencing platforms, not phone calls. Your meeting bots cannot access mobile phone calls, VoIP calls, WhatsApp calls, or traditional landline calls.
CFAI captures audio differently: it records from your Windows PC's microphone and system audio simultaneously using Dual Audio Capture. If you're taking a call through your PC (via WhatsApp Web, Skype, Teams, Google Voice, or any VoIP app), CFAI captures both sides of the conversation and transcribes in real time using local Whisper. For calls taken on a mobile phone near your computer, the microphone captures the room audio.
The result: a complete, speaker-labeled transcript of any phone call — without a bot, without a cloud upload, and without any integration with your phone carrier's infrastructure.
Consent notice: Use CFAI only after providing any notice and obtaining any consent required by applicable law and your organization's policies.
AI Note Takers for Phone Calls — Feature Comparison 2026
| Tool | Local Processing | No Bot | Speaker ID | Real-time Translation | Cognitive Map | Price |
|---|---|---|---|---|---|---|
| CFAI ★ Recommended | ✅ | ✅ | ✅ | ✅ | ✅ | Free trial / CFAI Pro €3.99/mo |
| Otter.ai | ❌ | ❌ | ✅ | ❌ | ❌ | Free tier / Pro $16.99/mo |
| Fireflies.ai | ❌ | ❌ | ✅ | ❌ | ❌ | Free tier / Pro $18/mo |
| Gong | ❌ | ❌ | ❌ | ❌ | ❌ | Enterprise pricing |
| Chorus.ai | ❌ | ❌ | ❌ | ❌ | ❌ | Enterprise pricing |
Why CFAI is the Best AI Note Taker for Phone Calls
Faster Whisper — Local Transcription
CFAI transcribes audio directly on your device using Faster Whisper. Your audio never leaves your computer. Supports 101 languages with high accuracy.
No Bot in Your Meeting
CFAI captures microphone and system audio at the Windows OS level, so no bot needs to join the call and no meeting-platform integration is required. Inform participants and obtain any consent required by law or organizational policy.
Cognitive Map — Stay on Track
CFAI builds a real-time semantic map of your conversation, highlights your active topic, predicts where you're going, and suggests how to stay focused. Metacognitive AI in action.
Agentic AI — Ask Questions During Meetings
CFAI's AI actively helps you. Ask follow-up questions, get real-time insights, and let AI suggest next steps — all while staying in your meeting.
Document RAG — Connect Context
Upload documents before your call. CFAI retrieves relevant information from your docs in real time, answering questions and providing context during conversations.
Real-Time Translation — 101 Languages
Communicate across languages. CFAI translates your meeting in real time, including captions and transcripts, breaking down language barriers instantly.
Local OCR — Screenshot to Text
Screenshot something and CFAI extracts text instantly using local OCR. No data sent to the cloud. Perfect for grabbing info from screens and documents.
Flexible Plans, No Surprises
Free trial to test everything. CFAI Pro is €3.99/month with 250 Cloud Credits; additional Cloud Credits are available as needed. Cancel anytime.
How to Transcribe Phone Calls with CFAI
Install CFAI on Windows
Download from cfai.io. Enable Dual Audio Capture in settings to record both your microphone and your PC's system audio simultaneously — capturing both sides of calls made through your computer.
Make or Receive Your Call
Use WhatsApp Web, Skype, Teams, Google Voice, or any VoIP app on your Windows PC. Open CFAI and activate transcription before the call connects. CFAI captures both the system audio and your microphone in real time.
Transcribe with Speaker Labels
CFAI identifies the two voices (you and the other person) using speaker diarization. The transcript shows who said what throughout the call.
Review Your Call Transcript
After the call, access the full labeled transcript and AI summary. Export to your preferred format. Recordings and transcripts stay on your device.
Frequently Asked Questions
Can I transcribe phone calls automatically?
Yes, for calls made through your Windows PC (WhatsApp Web, Skype, Teams, Google Voice). CFAI captures system audio and microphone simultaneously using Dual Audio Capture, transcribing both sides of the call in real time without a bot.
How do I record both sides of a phone call on Windows?
CFAI's Dual Audio Capture records both your microphone and your PC's system audio at the same time. This captures your voice and the caller's voice when using any VoIP app on Windows — without any phone carrier integration.
Is it legal to record phone calls?
Recording and transcription requirements vary by jurisdiction and context. Before capturing a call, provide any required notice, obtain any required consent, and follow applicable organizational or service policies.
Does CFAI work for WhatsApp calls on Windows?
Yes. CFAI captures audio from WhatsApp Web and WhatsApp Desktop on Windows using Dual Audio Capture. It transcribes both the microphone input (your voice) and system audio (the other person's voice) simultaneously.
Can CFAI transcribe mobile phone calls?
CFAI runs on Windows and captures audio from your PC. For mobile calls, you would need to put the call on speakerphone near your computer's microphone — CFAI can then capture the room audio. For PC-based VoIP calls, both sides are captured via Dual Audio Capture.
Can an AI note taker identify who is speaking in a phone call?
Yes. CFAI's speaker diarization identifies and labels different speakers in the transcript — typically 'Speaker 1' (your voice, from the microphone channel) and 'Speaker 2' (the caller's voice, from system audio).
Transcribe Every Phone Call Automatically
Try CFAI free. Record and transcribe phone calls on Windows — WhatsApp, Skype, Teams, VoIP — with both sides captured locally. CFAI Pro from €3.99/month.