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OLMo 3 7B Think

Parameters

7B

Context Length

66K

Modality

Text

Architecture

Dense

License

Apache 2.0

Release Date

25 Oct 2025

Knowledge Cutoff

Dec 2024

API Pricing (per 1M)

Input: $0.15 · Output: $0.50

System Requirements

VRAM requirements for different quantization methods and context sizes

1,024 tokens

16.76 GB VRAM

Consumer

1x RTX 4090

24GB VRAM

Datacenter

1x NVIDIA A100

80GB VRAM

Apple Silicon

1x Apple M3 Max

128GB VRAM

65,536 tokens

52.28 GB VRAM

Consumer

3x RTX 4090

24GB VRAM

Datacenter

1x NVIDIA A100

80GB VRAM

Apple Silicon

1x Apple M3 Max

128GB VRAM

Architecture Diagram

Input TokensToken EmbeddingPosition: AbsoluteHidden: 4.1k · Context: 66K · Vocab: 100.3kx 32 layersRMSNormPre-AttentionMulti-Head Attention32Q / 32KV heads · SW: 4.1kHead dim: 128+RMSNormPre-FFNFeed-Forward NetworkSwiGLUIntermediate: 11k+Final RMSNormOutput Logits

Evaluation Benchmarks

Rank

#151

BenchmarkScoreRank

General Text

Text Arena

1307

138

Intelligence Index

Artificial Analysis

0.06

221

Rankings

Overall Rank

#151

Coding Rank

-

About OLMo 3 7B Think

OLMo 3 7B Think is an open reasoning model by Ai2 engineered to generate transparent intermediate thinking tokens before answering. Trained with RLVR on verifiable datasets, it supports interpretable problem-solving across a 65K context.

Technical Specifications

Attention

Attention Structure

Multi-Head Attention

Attention Heads

32

Key-Value Heads

32

Attention Head Dimension

-

Position Embedding

Absolute Position Embedding

RoPE Theta

500,000

Sliding Window Attention

Yes

Sliding Window Size

4,096

Sliding Window Ratio

-

Linear Attention

-

Linear Attention Ratio

-

Normalization

RMS Normalization

Activation Function

SwigLU

Dimensions

Hidden Dimension Size

4,096

Number of Layers

32

FFN Intermediate Size (Dense)

11,008

Multi-Token Prediction Heads

-

Tokenizer

Vocabulary Size

100,278

About OLMo 3

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.


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