Open-source releaseModerate global significanceConfirmed confidence
Ai2 releases fully open 32B foundation model OLMo 3
Ai2 releases OLMo 3, a 32-billion-parameter foundation model that continues its emphasis on open training data and architecture details.
What happened
Event details
Released on November 20, 2025 by the Allen Institute for AI, OLMo 3 is a 32-billion-parameter autoregressive Transformer with openly documented training data sources and architecture.
Assessment
Why it matters
OLMo 3 continues one of the ecosystem's strongest efforts to make not only weights but also training inputs and design choices transparent.
67/100Global significance score. Regional effects are recorded only when the evidence supports a meaningful difference.
Availability
Access notes
Available through Ai2's official model catalog or repository as an open model.