Automation library · Content

Generate two-host PDF podcasts with OpenAI and Smallest AI

Started by someone submitting a form, and works across Gmail. It hands the judgement calls to OpenAI. 13 steps, 1 branch: a working afternoon to understand properly.

MediumCalls a model: OpenAI

13 stepsMedium: a working afternoon
1Branch: places the flow splits
0Loops or waits
1Service it connects to

The flow

Starts it 1Model 1Logic 7Service 4

The steps in the order they run, from what starts it.

  1. 1When Form SubmittedForm triggerStarts it
  2. 2Extract Data from FileExtract From FileService
  3. 3Generate Podcast Script (GPT-5)Open AiModel
  4. 4Split Script Into TurnsSplit OutLogic
  5. 5Route by HostSwitchLogic
  6. 6Synthesize Host A AudioSmallestaiService
  7. 7Synthesize Host B AudioSmallestaiService
  8. 8Preserve Host A OrderSetLogic
  9. 9Preserve Host B OrderSetLogic
  10. 10Merge Both HostsMergeLogic
  11. 11Sort by Conversational OrderSortLogic
  12. 12Concatenate WAV AudioCodeLogic
  13. 13Email Podcast to UserGmailService

How it's built

Starts on
Someone submitting a form
Steps
13, with 1 branch
Size
Medium: a working afternoon
Connects to
Gmail
Model
OpenAI

Questions

What does it need to run?

An n8n account, plus your own Gmail account, and a key for OpenAI. You connect your own accounts after importing it; none are included.

What starts it?

It starts on someone submitting a form.

Does it use AI?

Yes. It calls OpenAI. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 13 steps is enough that you should read each one before running it.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

Before you run it

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 13 steps before you point it at anything that matters.