Raptor 0.5: A Small Agent Model for the Macs Everyone Actually Owns
An open 8B-A1B model tuned for automation and business work. 6.3 GB on disk, built to run on 8–16 GB Macs.
Update, September 15, 2026. Raptor 0.5 has been replaced by Raptor 0.6, built on a different base after 0.5 looped in agent sessions. This post stays up as a record.
Today we're releasing Raptor 0.5, an open mixture-of-experts agent model fine-tuned on the Osaurus tool surface. It has 7.9 billion parameters and activates about 1 billion per token. At 6.3 GB it stays resident on an 8 GB Mac.
It is an automation model: files, spreadsheets, documents, and the steps in between, run on your Mac while you wait on each result.
Raptor is the smallest tier of a family of models sized for different Macs. This is its first release.
The model page has training and quantization details, the released training corpus, demo recordings, usage notes, downloads, and citation information.