AI Model Release Tracker US & Canada · updated
- 1Releases tracked
- Oct 14Latest · Ultramarine 1 Flash
- 0%Open-weight
- USUnited States
Paper Instruments is a US-based AI lab that trains models and agents for professional knowledge work in areas such as finance, law, consulting and operations. Its products are the Ultramarine models, the Feather agent harness and Paper Office, a set of agent-first Python libraries for Word, PowerPoint and Excel files. Ultramarine 1 Flash, released in October 2026, applies large-scale reinforcement learning on non-verifiable tasks to GLM-5.3 Flash. It is available through the Ultramarine API, with model weights listed as coming soon.
Paper Instruments
1 release latest Oct 14, 2026
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Ultramarine 1 Flash
Agentic knowledge-work model post-trained with non-verifiable RL on GLM-5.3 Flash; API live; open weights promised.
Paper Instruments FAQ
- What is Paper Instruments's latest AI model?
- Paper Instruments's most recent release in the Startrise tracker is Ultramarine 1 Flash, released Oct 14, 2026.
- How many AI models has Paper Instruments released?
- Startrise tracks 1 notable Paper Instruments release since January 2025, from Ultramarine 1 Flash (Oct 14, 2026) to Ultramarine 1 Flash.
- Does Paper Instruments release open-weight models?
- None of the 1 tracked Paper Instruments releases ship with downloadable weights; they are available through Paper Instruments's apps and API.
- Where is Paper Instruments based?
- Paper Instruments is based in United States.