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OLMo 2 7B Instruct vs OpenAI o1

Rows highlighted in warm gray are where the models differ. Numbers carry their as-of date and primary source.

Specs

Field A: OLMo 2 7B Instruct B: OpenAI o1
Released 2024-11-26—
Developer AI2OpenAI
Openness OpenProprietary
License Apache-2.0Proprietary
OSI-approved yesno
Data released yesno
Training code yesno
Architecture denseunknown
Total params 7B—
Active params ——
Experts ——
Context window ——
Attention mhaunknown
Position enc. ropeunknown
Pretraining tokens ——
Post-training sft, dporlhf
Training hardware H100—
$/M input —$15.00
$/M output —$60.00
Output tok/sec —75.8

Benchmarks

Missing scores render as not reported; never inferred. Bold highlights the leader per benchmark.

General reasoning

MMLU 61.3 2024-12-02 —
MMLU-Pro — 84.1 2026-05-21
GPQA-Diamond — 77.3 2024-12-05

Code

LiveCodeBench — 67.9 2026-05-21

Math

MATH — 97.0 2026-05-21
AIME 2024 — 83.3 2024-12-05

Context · A

The only major open-weights release that meets the strictest reading of OSAID: weights, training data (Dolma), training code (OLMo trainer), and training logs (WandB). Reference for what "fully open" can mean in 2024.

Context · B

The first publicly available frontier reasoning model. Trained to spend extra inference compute on a "private chain of thought" before answering, setting the template the open community would chase with R1.

OLMo 2 7B Instruct detail → · OpenAI o1 detail →