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

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
Queue your next request while one is running, or steer it mid-run. Builder handles 4 tasks at once, Studio 7.
See the plans
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 wordingUse Sigel on our servers, bring your own provider keys, or run a model on your own computer.
More about the models
Most assistants ask you to trust a setting. Ours is a rule, and the path is short enough to read in one breath.
A draft, a decision, a file from your project.
In the web app, chats are kept in your browser, encrypted with a key that never leaves it.
Sigel reads your message on our servers and replies. That is the whole job.
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 wordingSigel 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.
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.
Chat at chat.wynfall.dev with Sigel. Nothing to install, and your chats stay in your browser.
Sign inYour chats, files and projects in one window on Windows. Use Sigel, the providers you already pay for, or a model running on your own computer.
More about Wynfall DesktopSigel in your terminal. Understand a project, chase a bug, plan the change before you make it. It asks before it acts. Included from Starter.
More about Wynfall CodeThe short version, in plain words.
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 differentWynfall 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 StudiosNo. 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 wordingSigel 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 SigelYes. 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 plansSign up now. It is open to everyone: 3 days of Builder free, no card.
Open to everyone. 3 days of Builder free, no card.