Paper Instruments

Feather operates within existing folders to generate files like models, memos, or decks, and tracks all modified files.

Agent-first forks of python-docx, python-pptx, and openpyxl for safer, inspectable, and verifiable edits to Word, PowerPoint, and Excel files.

Ultramarine 1 Flash is an open model for professional work. It makes the decks, models, and memos that people in finance, law, consulting, and operations put in front of clients, at a fraction of the cost of frontier models.

An agent-first benchmark for evaluating long-form equity research.

Agent-first Python packages for editing Word documents, PowerPoint presentations, and Excel workbooks.

Scaling medical RL to Kimi K2.5.

Experiments in rubric grading

Paper Instruments is hiring research engineers who are excited about open source.

How the Paper Instruments team works: ownership, courage, first-principles thinking, and the operating principles behind them.

Paper Instruments provides frontier open-source models for knowledge work, spanning finance, consulting, law, and operations.

How Paper Instruments collects, uses, discloses, and retains Personal Information in connection with the Services.

The agreement outlines terms for using the Paper Instruments website, Feather, and the Ultramarine API.

GitHubRepository owner

Ultramarine applies **reinforcement learning (RL)** in industries where outcomes are difficult to verify, including **finance, law, consulting, and operations**. The company targets sectors where traditional validation methods fall short, leveraging RL to optimize decision-making processes. This approach enables adaptive problem-solving in high-stakes environments where direct performance measurement is unreliable.

Oct 2026Paper InstrumentsNews article

Paper Instruments launches **Paper Office**, a suite of Python packages designed for developers to programmatically edit Word documents, PowerPoint presentations, and Excel workbooks. The tools focus on an agent-first approach, enabling automation and customization of office file formats. The release targets developers building applications requiring document manipulation without manual intervention.

Sep 2026Paper InstrumentsNews article

Paper Instruments introduces **DiligenceBench**, a benchmark for evaluating AI agents generating long-form equity research. The framework assesses performance in producing detailed, analytical reports. It focuses on replicating the depth and rigor of human equity research outputs.

Jul 2026Paper InstrumentsNews article