Lite
iPhone XS / XR / 11 series · iPad 8th–9th gen · Gemma 2B (1.2 GB)
Quick facts, short replies, haiku, and code under 15 lines — all offline. Accuracy drops on anything over a paragraph. Complex code or multi-step reasoning is not supported at this tier.
Core
iPhone 12 and newer · iPad Air 4+ · Phi-3.5 mini (2.2 GB)
The everyday workhorse. Real code generation, full emails, short stories up to ~800 words, debugging, and automation scripts — correctly, first try. Multi-file projects and writing over 2,000 words need splitting into passes.
Magnum Brain Tuning
iPhone 13 Pro+ · iPad Pro / Air M-series · Phi-3.5 default · Qwen2.5-Coder-7B opt-in (4.3 GB)
Production-quality code first try, long-form writing up to 5,000 words, 5-file simultaneous analysis, and a 128K context window with the opt-in 7B model. The only on-device tier that competes with cloud output quality.