Telegram Voice to Post with AI

The workflow JSON

Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →

{
  "name": "Telegram Voice to Post",
  "nodes": [
    {
      "parameters": {
        "updates": [
          "message"
        ],
        "additionalFields": {}
      },
      "id": "telegram-trigger-1",
      "name": "Telegram Trigger",
      "type": "n8n-nodes-base.telegramTrigger",
      "typeVersion": 1.1,
      "position": [
        250,
        300
      ],
      "credentials": {
        "telegramApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "operation": "getFile",
        "fileId": "={{ $json.message.voice.file_id }}"
      },
      "id": "telegram-getfile-1",
      "name": "Get Voice File",
      "type": "n8n-nodes-base.telegram",
      "typeVersion": 1.2,
      "position": [
        450,
        300
      ],
      "credentials": {
        "telegramApi": {
          "name": "<your credential>"
        }
      }
    },
    {
      "parameters": {
        "method": "GET",
        "url": "=https://api.telegram.org/file/botYOUR_BOT_TOKEN/{{ $json.result.file_path }}",
        "options": {
          "response": {
            "response": {
              "responseFormat": "file"
            }
          }
        }
      },
      "id": "http-download-1",
      "name": "Download Voice File",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "position": [
        650,
        300
      ]
    },
    {
      "parameters": {
        "method": "POST",
        "url": "https://api.openai.com/v1/audio/transcriptions",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            {
              "name": "Authorization",
              "value": "Bearer YOUR_OPENAI_KEY"
            }
          ]
        },
        "sendBody": true,
        "contentType": "multipart-form-data",
        "bodyParameters": {
          "parameters": [
            {
              "parameterType": "formBinaryData",
              "name": "file",
              "inputDataFieldName": "data"
            },
            {
              "name": "model",
              "value": "whisper-1"
            }
          ]
        },
        "options": {}
      },
      "id": "whisper-transcribe-1",
      "name": "Whisper Transcription",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "position": [
        850,
        300
      ]
    },
    {
      "parameters": {
        "method": "POST",
        "url": "https://api.openai.com/v1/chat/completions",
        "sendHeaders": true,
        "headerParameters": {
          "parameters": [
            {
              "name": "Authorization",
              "value": "Bearer YOUR_OPENAI_KEY"
            },
            {
              "name": "Content-Type",
              "value": "application/json"
            }
          ]
        },
        "sendBody": true,
        "specifyBody": "json",
        "jsonBody": "={ \"model\": \"gpt-4o\", \"messages\": [{ \"role\": \"system\", \"content\": \"Format the voice transcription into an engaging Telegram channel post. Keep author tone. Add relevant emoji. Max 300 words.\" }, { \"role\": \"user\", \"content\": {{ JSON.stringify($json.text) }} }], \"max_tokens\": 500 }",
        "options": {}
      },
      "id": "gpt4o-format-1",
      "name": "GPT-4o Format Post",
      "type": "n8n-nodes-base.httpRequest",
      "typeVersion": 4.2,
      "position": [
        1050,
        300
      ]
    },
    {
      "parameters": {
        "chatId": "YOUR_CHANNEL_ID",
        "text": "={{ $json.choices[0].message.content }}",
        "additionalFields": {
          "parse_mode": "Markdown"
        }
      },
      "id": "telegram-send-channel-1",
      "name": "Send to Channel",
      "type": "n8n-nodes-base.telegram",
      "typeVersion": 1.2,
      "position": [
        1250,
        300
      ],
      "credentials": {
        "telegramApi": {
          "name": "<your credential>"
        }
      }
    }
  ],
  "connections": {
    "Telegram Trigger": {
      "main": [
        [
          {
            "node": "Get Voice File",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Get Voice File": {
      "main": [
        [
          {
            "node": "Download Voice File",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Download Voice File": {
      "main": [
        [
          {
            "node": "Whisper Transcription",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "Whisper Transcription": {
      "main": [
        [
          {
            "node": "GPT-4o Format Post",
            "type": "main",
            "index": 0
          }
        ]
      ]
    },
    "GPT-4o Format Post": {
      "main": [
        [
          {
            "node": "Send to Channel",
            "type": "main",
            "index": 0
          }
        ]
      ]
    }
  },
  "settings": {
    "executionOrder": "v1"
  },
  "meta": {
    "templateCredsSetupCompleted": false
  }
}

Credentials you'll need

Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.

• telegramApi

About this workflow

Telegram Voice to Post. Uses telegramTrigger, telegram, httpRequest. Event-driven trigger; 6 nodes.

Source: https://github.com/mike-prokhorov/n8n-automation-templates/blob/main/telegram-voice-to-post/telegram-voice-to-post.json — original creator credit. Request a take-down →

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