wynfall

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AI that gets the work done.

Give it a job. It writes and fixes code, searches the web, works through your files and shows every change.

Wynfall Desktop fixing a bug in a small recipe app. The chat shows it running the tests, editing one file and running them again until all three pass, and the Changes panel beside it shows the exact edit.
Wynfall Desktop for Windows, with Sigel . A demo project, not a customer's.

Built to finish the job.

It works on your files.

Open a folder and Wynfall reads it, searches it and edits it, then runs your tests. You choose whether it asks before each change.

See Wynfall Desktop
The Desktop sidebar: pinned chats, then projects such as Recipe Box and Maple Street Library, each with its own chats.

Hand it a job. Keep going.

Queue your next request while one is running, or steer it mid-run. Builder handles 4 tasks at once, Studio 7.

See the plans
The message box while a task is running, with two follow-up requests queued and the hint: steer this run, or queue for after.

Private by rule.

Nothing you give it trains a model, on any plan or trial, unless you send it to us as feedback. It is written into our Terms.

Read the exact wording

Run it here, or on your PC.

Use Sigel on our servers, bring your own provider keys, or run a model on your own computer.

More about the models
The model picker open above the message box, with Sigel selected and two more choices: add a provider, or run a model on this PC.

Fair prices. Try it free for 3 days.

Every plan has the same Wynfall AI. You pick how much room you need. Every new account starts with 3 days of Builder, free and with no card, and there are no surprise charges.

Compare every plan

Teams is coming soon.

What happens to your words.

Most assistants ask you to trust a setting. Ours is a rule, and the path is short enough to read in one breath.

  1. You write.

    A draft, a decision, a file from your project.

  2. Your browser keeps it.

    In the web app, chats are kept in your browser, encrypted with a key that never leaves it.

  3. The model answers.

    Sigel reads your message on our servers and replies. That is the whole job.

  4. It stops there.

    Nothing you give it trains a model, on any plan or trial, unless you send it to us as feedback.

The no-training rule is written into our Terms, not tucked behind a toggle.

Read the exact wording

Sigel. One rule.

Sigel keeps your work out of training. It is the one model at launch, on every plan, shown by three feathers: the same mark you see in the apps.

Sigel

Deeper reasoning

On every plan

Deeper reasoning for code, writing and long documents. Every new account starts with 3 days of Builder free; plans start at $10 a month.

More about Sigel

Where to use Wynfall

Questions, answered.

The short version, in plain words.

What is Wynfall AI?

Wynfall AI is a private AI assistant for writing, decisions and code, running on Wynfall’s own models. You can use it in chat in your browser, in Wynfall Desktop for Windows, or in Wynfall Code in your terminal. It is open to everyone: sign up with an email code or a passkey, and every new account starts with 3 days of Builder, free and with no card.

How Wynfall is different
Who makes Wynfall AI?

Wynfall AI is made by Wynfall Studios, LLC in Georgia, USA. The company is a member of the NVIDIA Inception program, and you can reach the people building it at hello@wynfall.dev.

About Wynfall Studios
Does Wynfall AI train on my work?

No. Nothing you give it trains a model, on any plan or trial, unless you send it to us as feedback. The rule is written into our Terms.

Read the exact wording
What is Sigel?

Sigel is the Wynfall model. Wynfall Sigel reasons more deeply for code, writing and long documents, and it holds very long conversations, with room for hundreds of pages on every plan. It is on every plan.

Meet Sigel
Is it free to try?

Yes. Every new account starts with 3 days of Builder, free and with no card: Sigel with Max thinking, in your browser, in Wynfall Desktop and in Wynfall Code. When the trial ends you choose a plan to keep going, and Starter is $10 a month. Every limit is on the pricing page.

See the plans

Get started.

Sign up now. It is open to everyone: 3 days of Builder free, no card.

Open to everyone. 3 days of Builder free, no card.