# OLMo 2

> Fully open language model by Allen Institute for AI

OLMo 2 is the Allen Institute for AI's fully open language model, releasing not just weights but training data, code, and evaluation frameworks. It's designed for the research community to fully reproduce and study, representing a commitment to truly open AI science.

## Quick facts

- Categories: Developer Tools
- Pricing: Free
- Free plan: Yes
- Official site: https://allenai.org/olmo
- Last checked: 2026-11-05

## Key features

- Fully open weights, data, and code
- Training transparency and reproducibility
- Research-focused design
- Multiple model sizes
- Detailed evaluation framework
- Community-driven development

## Use cases

- AI research and reproducibility
- Studying language model training
- Academic AI projects
- Building on fully open foundations

## Links

- Nextool.ai page: https://nextool.ai/tools/ai2-olmo/
- Alternatives: https://nextool.ai/alternatives/ai2-olmo/

Source: Nextool.ai (https://nextool.ai/tools/ai2-olmo/). Pricing and features change; confirm on the provider's site before relying on them.