Parameters
7B
Context Length
65.536K
Modality
Text
Architecture
Dense
License
Apache 2.0
Release Date
25 Oct 2025
Knowledge Cutoff
Dec 2024
Attention Structure
Multi-Head Attention
Hidden Dimension Size
4096
Number of Layers
32
Attention Heads
32
Key-Value Heads
32
Activation Function
SwigLU
Normalization
RMS Normalization
Position Embedding
Absolute Position Embedding
OLMo 3 7B Instruct is a specialized large language model developed by the Allen Institute for AI (AI2), designed to advance the scientific study of language modeling through complete transparency. As a core component of the OLMo 3 family, this instruction-tuned variant is optimized for low-latency, multi-turn dialogue, complex instruction following, and function-calling capabilities. It serves as a highly accessible and efficient workhorse for both research and production environments, bridging the gap between open-weights and fully open-source initiatives.
Technically, the model utilizes a standard decoder-only Transformer architecture with 7 billion parameters. The training pipeline is notably rigorous, involving a staged progression that begins with pre-training on the Dolma 3 dataset, followed by mid-training on targeted data mixes and context extension to support a 65,536-token window. The post-training methodology for the Instruct variant integrates Supervised Fine-Tuning (SFT), Direct Preference Optimization (DPO), and Reinforcement Learning from Verifiable Rewards (RLVR) on the Dolci-Instruct datasets, focusing on accuracy and adherence to user intent.
Innovation in the OLMo 3 series lies not in exotic architecture but in its exhaustive transparency. AI2 provides unrestricted access to the training code, pre-training data recipes, intermediate checkpoints, and detailed training logs. This enables practitioners to audit the model's lineage, reproduce results, or continue pre-training from specific historical states. The 7B Instruct model is particularly well-suited for applications requiring a balance of reasoning capability and computational efficiency, such as conversational agents, local coding assistants, and educational tools.
OLMo (Open Language Model) is a series of fully open language models designed to enable the science of language models. Released by the Allen Institute for AI (Ai2), OLMo 3 provides complete access to training data (Dolma 3), code, checkpoints, logs, and evaluation methodologies. The family includes Base models for pretraining research, Instruct variants for chat and tool use, and Think variants with chain-of-thought reasoning capabilities. All models are trained with staged approach including pretraining, mid-training, and long-context phases.
No evaluation benchmarks for OLMo 3 7B Instruct available.
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Context Size: 1,024 tokens