The Allen Institute for AI (Ai2) is a 501(c)(3) nonprofit research institute based in Seattle, established in 2014 by Microsoft co-founder Paul Allen. It conducts open AI research and publishes fully open language models such as the Olmo family, along with the Molmo multimodal models and Tulu post-training recipes.
- Founded
- 2014
- Type
- Nonprofit
- Founder
- Paul Allen
- AI lab
Catalogue
All models by Ai2
31 models · 1–25
| Select models to compare | Model | Released | Context | Input /M | Output /M | Parameters | Type | I/O | Openness |
|---|---|---|---|---|---|---|---|---|---|
 MolmoAct 2Ai2 | May 5, 2026 | — | — | — | 5.4B | Text | text, image → text | Open weights | |
| MolmoWeb 8BAi2 | March 24, 2026 | — | — | — | 8.7B | Text | text, image → text | Open weights | |
| MolmoPoint 8BAi2 | March 18, 2026 | — | — | — | 8.7B | Text | text, image → text | Open weights | |
| Olmo Hybrid 7B InstructAi2 | March 5, 2026 | — | — | — | 7.4B | Text | text → text | Open weights | |
| Olmo Hybrid 7B ThinkAi2 | March 5, 2026 | — | — | — | 7.4B | Text | text → text | Open weights | |
| Bolmo 7BAi2 | December 15, 2025 | — | — | — | 7.6B | Text | text → text | Open weights | |
| Olmo 3.1 32B InstructAi2 | December 12, 2025 | — | — | — | 32.2B | Text | text → text | Open weights | |
| Olmo 3.1 32B ThinkAi2 | December 12, 2025 | — | — | — | 32.2B | Text | text → text | Open weights | |
| Molmo 2 8BAi2 | December 11, 2025 | — | — | — | 8.7B | Text | text, image, video → text | Open weights | |
| Olmo 3 32B ThinkAi2 | November 20, 2025 | — | — | — | 32.2B | Text | text → text | Open weights | |
| Olmo 3 7B InstructAi2 | November 20, 2025 | — | — | — | 7.3B | Text | text → text | Open weights | |
| Olmo 3 7B ThinkAi2 | November 20, 2025 | — | — | — | 7.3B | Text | text → text | Open weights | |
| DR Tulu 8BAi2 | November 18, 2025 | — | — | — | 8B | Text | text → text | Open weights | |
| olmOCR 2Ai2 | October 22, 2025 | — | — | — | 8.3B | Text | text, image → text | Open weights | |
| OLMoASRAi2 | August 28, 2025 | — | — | — | — | Text | audio → text | Open weights | |
| MolmoAct 7B-DAi2 | August 12, 2025 | — | — | — | 8.1B | Text | text, image → text | Open weights | |
| FlexOlmo 7x7BAi2 | July 9, 2025 | — | — | — | 33.3B | Text | text → text | Open weights | |
| OLMo 2 32BAi2 | March 13, 2025 | — | — | — | 32.2B | Text | text → text | Open weights | |
| olmOCRAi2 | February 25, 2025 | — | — | — | 8.3B | Text | text, image → text | Open weights | |
| Tulu 3 405BAi2 | January 30, 2025 | — | — | — | 406B | Text | text → text | Open weights | |
| OLMo 2 13BAi2 | November 26, 2024 | — | — | — | 13.7B | Text | text → text | Open weights | |
| OLMo 2 7BAi2 | November 26, 2024 | — | — | — | 7.3B | Text | text → text | Open weights | |
| Tulu 3 70BAi2 | November 21, 2024 | — | — | — | 70.6B | Text | text → text | Open weights | |
| Tulu 3 8BAi2 | November 21, 2024 | — | — | — | 8B | Text | text → text | Open weights | |
| Molmo 72BAi2 | September 25, 2024 | — | — | — | 73.3B | Text | text, image → text | Open weights |