{"id":"ultramarine-1-flash","slug":"ultramarine-1-flash","name":"Ultramarine 1 Flash","orgId":"paper-instruments","family":"ultramarine-1-flash","releaseDate":null,"availability":"announced","openWeights":false,"license":null,"paramsTotal":null,"paramsSource":null,"contextWindow":null,"knowledgeCutoff":null,"modelCardUrl":"https://www.paperinstruments.com/blog/ultramarine","hfRepo":null,"modalities":["text"],"aliases":["Ultramarine 1 Flash","ultramarine","ultramarine-1-flash","ultramarine 1 flash"],"aliasNote":null,"origin":"tracked","tracked":{"trackedSince":"2026-10-15","announced":"2026-10-14","blurb":"Paper Instruments' agentic model for professional knowledge work in finance, law, consulting and operations, post-trained from GLM-5.3 Flash with large-scale reinforcement learning. The API is live; the lab says weights are coming soon.","api":"live","apiModelId":"ultramarine-1-flash","openWeights":"announced","params":{"text":"~18B active","source":"Third-party write-up, not stated by the lab","unsure":true},"facts":[{"label":"Base model","value":"GLM-5.3 Flash"},{"label":"Focus","value":"Knowledge work"},{"label":"Reasoning","value":"Always on (max by default)","unsure":true,"note":"press"}],"claims":["+4.1 points on average over GLM-5.3 Flash across six knowledge-work benchmarks, with 6.5% fewer tokens.","59.3 on its internal PI Knowledge Work suite at about $0.13 per task."],"sources":[{"kind":"lab","title":"Ultramarine 1 Flash: Scaling Non-Verifiable RL","url":"https://www.paperinstruments.com/blog/ultramarine","date":"2026-10-14"},{"kind":"lab","title":"Ultramarine 1 Flash product page","url":"https://www.paperinstruments.com/ultramarine"}],"peer":{"slug":"glm-5-3-flash","label":"its base model, GLM-5.3 Flash"},"firstBenchmark":null},"organization":{"id":"paper-instruments","name":"Paper Instruments","slug":"paper-instruments","country":null,"url":"https://www.paperinstruments.com","color":"#11110F","mark":"P"},"price":null,"answer":{"word":"Pending benchmarks.","scope":"Announced Oct 14, 2026; no independent results yet.","lead":"As of Oct 22, 2026, Ultramarine 1 Flash is pending benchmarks on isitsota: announced Oct 14, 2026, with no independent results on the boards we track yet.","confidence":"low"},"status":"PENDING_BENCHMARKS","verdicts":[]}