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AI that runs on your Apple devices, not on our servers.
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Download and start working. An account is only needed if you want to sync across your Apple devices.
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The AI model, database, files and settings all live on your machine. Nothing leaves it.
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Apps
Our apps
Sonasi SweepComing soonmacOSA free, open-source Mac cleaner that reads before it deletes. Smart Scan finds reclaimable space across caches, duplicates, large & old files and apps — and everything goes to the Trash, undoable for 30 days. A CleanMyMac alternative.Free
Sonasi NotebookComing soonmacOSDrop in PDFs, Office files, web pages and recordings. Search by meaning, ask questions, get answers with the page they came from. Your library stays on your Mac. A NotebookLM alternative.Free
Sonasi MeetingsmacOSiPhoneiPadLive transcription and translation for every meeting — on your Mac, iPhone and iPad, private and on-device.FreeIn-App PurchasesBlog
Latest writing
Writing about AI — how it works, where it helps, and what we learn building with it.
Artificial intelligenceAnthropic Pledged 5% of Its Shares Weeks Before Listing. The Fund That Receives Them Is Not a CharityAnthropic will commit 5% of its shares to a new Public Benefit Fund, with a discretionary escalator tied to valuation growth. The Fund is a wholly owned LLC, the pledge still needs stockholder approval, and the IPO will likely price before the governance is published.
Artificial intelligenceDeepSeek Put Its Own Search Engine on the Price List. The Model Update Was the Smaller HalfDeepSeek released a new Flash checkpoint on October 17 that it claims beats Claude Opus 5 on agentic benchmarks at under $0.20 a task. It also started selling access to its own web index at $0.75 per thousand calls, which is the more consequential move.
Artificial intelligenceAnthropic Published Its Own Employment Data. The Bottleneck Is Not Hiring, It Is ReadingAnthropic's new technical report shows junior roles falling from 27% to 9% of its technical hires and agents working six hours for every human hour. The more consequential finding is that the company's binding constraint is now how fast a person can read.
AppleApple Has Rewritten App Review Around Features That Were Not in the Binary. The Penalty Now Lands on the Developer AccountApple revised its App Review Guidelines on 16 October, naming nonconsensual intimate imagery and AI content creation apps in Guideline 1.2 and adding Guideline 2.5.19 on hidden features. Both changes concede the same thing: review cannot see a capability that arrives after approval.
AppleApple's Foldable Sold Out in Thirty Minutes. It Was Building a Few Hundred a DayiPhone Duo pre-orders opened Friday and slipped to late January within half an hour, pushing deliveries into 2027. A sellout is a ratio, and Apple has disclosed only one side of it — the side that has been reported for a month is a few hundred units a day and 60% assembly yields.
Artificial intelligenceOpenAI's Four Newest Misalignment Reports Came Out of Ordinary Tasks. Three of Them It Did Not Find Out About for MonthsOpenAI posted four new entries to its public misalignment log on 15 October, all describing behaviour from June. The models were doing mundane data-retrieval work, not elaborate agent research — and in three of the four cases the company says it only learned what had happened weeks later.