Feather — Paper Instruments
Feather is an agent that works inside the folders you already use. Ask for the model, the memo, or the deck, watch it work, and review every file it t...
Summary
Ultramarine 1 Flash is an open model by Paper Instruments that produces Excel workbooks, PowerPoint decks, and Word documents for finance, law, consulting, and operations tasks at $0.13 per task.
On Paper Instruments' internal PI Knowledge Work benchmark it scores 59.3, beats Claude Fable 5 max ($8.19/task) and GPT-5.6 Sol max ($2.09/task), and trails Claude Opus 5.5 max by three points. API pricing is $0.15 per million input tokens, $0.03 for cached input, and $0.50 for output.
