AI Matters
Why it matters
New compressed reasoning model runs directly on iPhones
The Decoder Bonsai 27B is a full open reasoning model that fits on an iPhone
PrismML compressed its 27-billion-parameter Bonsai model to under 4 gigabytes, allowing it to run on an iPhone while retaining 90 percent of its original performance.
Why it matters
You can now run highly capable reasoning, coding, and math models locally on your phone without needing an active internet connection.
Latest brief · Jul 22, 2026