allenai / text-generation Open weights updated 1 year ago

OLMo-2-0425-1B

Name: OLMo-2-0425-1B
Author: allenai

We introduce OLMo 2 1B, the smallest model in the OLMo 2 family. OLMo 2 was pre-trained on OLMo-mix-1124 and uses Dolmino-mix-1124 for mid-training.

Params

1.5 B

Context

4,096

Downloads 30d

190 K

Likes

Commercial use: allowed apache-2.0 Not gated SAFETENSORS 1 languages View on Hugging Face ↗

Download history

daily snapshots · 106 days

▲ 107 K in the last 30 days (35.9%)

1.1 M190 K

Jul 28Sep 1Oct 6Nov 10

Can you run it?

Estimated VRAM at 8K context unless noted. Pick your hardware to see the verdict per quantization.

File	Quant	Size	Est. VRAM	Verdict on RTX 4090 · 24 GB
model.safetensors	f32	5.9 GB	7.3 GB	✅ Runs comfortably

Estimate: file size × 1.1 + KV cache at 8K + 0.5 GB overhead. Not a benchmark — how we calculate this.

Run it

copy-paste, exact tags checked against the Hub

~ · curl · api/v1

$ curl -s https://aimodelscomparison.com/api/v1/models/olmo-2-0425-1b
{
  "hf_id": "allenai/OLMo-2-0425-1B",
  "params_b": 1.48,
  "context_length": 4096,
  "license": { "id": "apache-2.0", "commercial": "yes" },
  "downloads_30d": 190018,
  "vram_estimates": [
    { "quant": "f32", "gb": 7.3 }
  ],
  "updated_at": "2026-07-28T18:05:28Z"
}

est. VRAM —on RTX 4090 · 24 GBJSON API →

Specifications

Architecture: Olmo2ForCausalLM
Parameters: 1.5 B
Tensor type: F32
Context length: 4,096
Vocabulary: 100,352
Layers / heads: 16 / 16
Licence: apache-2.0
First seen on the Hub: 2025-04-17
Training datasets: undisclosed
Added to our catalog: 2026-07-28

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