Analyze customer sales calls and update CRM with Whisper and GPT-4

AI Customer Call Analyzer — Voice → Insights → CRM with GPT-4

Converts raw sales call recordings into structured CRM intelligence. Uploads audio → transcribes via Whisper → GPT-4 extracts intent, sentiment, objections, next steps → updates CRM and sends a structured summary to the sales team.

How it works

Upload Call Recording - Webhook receives audio file upload (mp3, wav, m4a) from sales rep portal Validate & Prepare Audio - Checks file type, size limits, extracts call metadata Transcribe via Whisper - Sends audio to OpenAI Whisper API for high-accuracy transcription Wait — Transcription Buffer - Holds until transcription is confirmed complete GPT-4 Call Intelligence - Extracts intent, sentiment, objections, buying signals, action items MCP Context Enrichment - Pulls CRM history and enriches analysis with account context Update CRM Record - Writes structured insights back to CRM (HubSpot / Salesforce) Send Sales Summary - Emails rep and manager with call scorecard and next steps Audit Log - Records all processing steps for compliance and coaching

Setup Steps

Import this workflow into n8n Configure credentials: OpenAI API - For Whisper transcription and GPT-4 analysis HubSpot / Salesforce - CRM update target Google Sheets - Audit log and call registry SMTP / Gmail - Sales summary delivery Set your CRM API endpoint and field mapping in the update node Configure your sales team email list in the notify node Activate the workflow

Sample Upload Payload { "callId": "CALL-20250222-0042", "repEmail": "jane.smith@company.com", "repName": "Jane Smith", "contactEmail": "buyer@prospect.com", "contactName": "Bob Johnson", "companyName": "Acme Corp", "dealStage": "negotiation", "callDurationSecs": 1847, "audioUrl": "https://storage.company.com/calls/call-0042.mp3" }

Features Whisper-powered transcription** with speaker diarization hints GPT-4 intent and sentiment** extraction with confidence scores Objection and buying signal** detection Auto CRM field mapping** — no manual data entry Sales scorecard** with talk ratio, next step clarity, deal risk Full audit trail** for call coaching and compliance

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