Watch a diagram build itself from a spoken process
Wavelength is a voice-to-diagram tool. You talk through a process, and it draws the flow while you are still talking. This page walks through exactly what the live demo does, using the same sentence the demo uses. The interactive version needs no account.
The demo needs no account. The free plan needs no card.
The sentence the demo starts from
This is one continuous piece of discovery-call speech, the kind someone says in the first ten minutes of a technical call. Nothing about it is cleaned up or structured for a diagramming tool.
“So the leads come in through HubSpot, marketing qualifies them, and if they look good they get routed to a sales development rep. If not they drop into a nurture campaign. Meanwhile everything's syncing nightly into Snowflake, where dbt cleans it up before it hits Tableau.”
What Wavelength pulls out of it
That one sentence contains four different kinds of thing, and they need different shapes on a diagram. Wavelength separates them as it listens rather than asking you to classify anything.
| Kind of node | From this sentence |
|---|---|
| Systems | HubSpot, Snowflake, dbt, Tableau |
| Actors | Marketing, sales development rep |
| Decisions | Whether a qualified lead “looks good” |
| Outcomes | Routed to an SDR, or dropped into a nurture campaign |
It also catches the part people usually lose on a call: the nightly sync into Snowflake runs alongside the lead flow rather than after it. That is a parallel branch, and it gets drawn as one.
How it marks its own guesses
This is the part worth understanding before you trust any tool like this. Wavelength distinguishes between what it heard and what it inferred:
- Solid arrows are connections stated directly in the speech.
- Dashed amber arrows are inferences, left unconfirmed until you accept or correct them.
An inferred connection never silently becomes fact. If Wavelength assumes an ordering you did not actually state, you can see that it assumed it, which matters when the diagram is about to be sent to a customer as a record of what was agreed.
What you can do in the live demo
Drag any node, right-click one to change it, and click a connection to reverse or reshape it. Everything is interactive and nothing is saved. Saving a flow and exporting a PNG are the two actions that need an account.
Why this is different from typing a diagram
Text-to-diagram generators and diagram-as-code tools both assume you already know the process well enough to write it down. On a discovery call you do not. You are learning it in real time from someone who has never had to explain it in order before.
The value of building the diagram during the conversation is that the other person can correct it while they are still in the room. A diagram you write up afterwards captures what you think you heard. See voice to diagram for the longer version of that argument, and Wavelength vs Lucidchart for where a traditional diagramming suite is still the better tool.
Common questions
Do I need an account to try it?
No. The live demo is fully interactive with no signup at all.
Can I use my own call instead?
Yes. On a free account you can speak a process out loud or paste a transcript from Zoom, Gong, or Fireflies. See turning a transcript into a flowchart for that workflow. The free plan covers 5 saved flows with no card.
Does it work on more complicated flows than this one?
The demo sentence is deliberately short so the build is quick to watch. Real calls produce branches, nested systems, and multiple owners, which is what the tool is actually built for. That is also where it is most useful, because those are the flows nobody can hold in their head.
Who is this for?
Mostly sales engineers mapping a prospect's data flow live on a discovery call, and solution architects capturing an architecture review while it happens.