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Open-weight model · Text generation

Ornith-1.5-9B-NVFP4

by Ornith ornith-ai/Ornith-1.5-9B-NVFP4

Chirp Chirp! We are introducing Ornith-1.5, a major step toward building foundation models through end-to-end self-improvement.

Parameters6.7B
Context262,144
Weights8.8 GB
Licensemit
AccessOpen weights
Monthly Downloads723.3k

Runs On

What it takes to serve Ornith-1.5-9B-NVFP4 (6.7B parameters): the memory its weights need at each precision, and the cheapest way to rent enough data-center GPUs to hold them.

PrecisionWeightsMemory neededCheapest setupPer hourAlso fits
16-bit 13.5 GB 16.1 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 6.7 GB 8.1 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 3.4 GB 4.0 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00

Memory is the weights at that precision plus 20% for the runtime and a short context; a long context needs more. Prices are the lowest on-demand hourly rates in the SAVRN Index, read Sep 18, 2026.

SAVRN's Notes on Ornith-1.5-9B-NVFP4

A 262,144-token context on a 6.7B-parameter model means a codebase fits in one prompt. Ornith developed the line on Qwen3.5 and Gemma4, and this release extends Ornith-1.0 with a self-improvement loop that generates its own training tasks. Memory runs 4.0 GB at 4-bit, 8.1 GB at 8-bit and 16.1 GB at 16-bit, and the 8.8 GB download comes in under the 13.5 GB of a full 16-bit copy, so check which precision the files hold. The cheapest setup we list, one 192 GB MI300X at $1.85 an hour on demand, is ample; long prompts, not weights, fill that card.

MIT is the simplest license: commercial use, modification and redistribution, with the copyright and permission notices kept. Confirm your serving stack supports the qwen3_5 model type and the NVFP4 format, and note the August 26, 2026 release date: no evaluations reported, no host prices on the Index, so price it from your hardware.

Model Card

By Ornith, published under mit, revision 155f200d85ad.

Ornith-1.5-9B

Chirp Chirp! We are introducing Ornith-1.5, a major step toward building foundation models through end-to-end self-improvement.

Ornith-1.5 extends Ornith-1.0 (which was developed on top of Qwen3.5 and Gemma4 with additional continued pretraining, mid-training, and post-training) by expanding the self-improvement loop from scaffold and rollout optimization to jointly optimizing task generation, scaffold construction, and solution rollouts. Rather than relying on a fixed set of human-curated tasks and manually designed harnesses, Ornith-1.5 continuously generates new training tasks, discovers effective strategies for solving them, and improves the policy through reinforcement learning. For more details on the task, harness, and rollout reward design, please refer to our blog.

Ornith 1.5 9B

This model card documents Ornith-1.5-9B, the most lightweight member of the Ornith-1.5 family — a 9B dense model designed for efficient single-GPU deployment, and edge-deployable on mobile devices via its quantized Ornith-1.5-9B-Mobile variant.

Benchmarks

Read the full model card (1,429 words)

Configuration

Architecture
Qwen3_5ForConditionalGeneration
Context length (tokens)
262,144
Layers
32
Hidden size
4,096
Feed-forward size
12,288
Attention heads
16
Key/value heads
4
Head dimension
256
Vocabulary size
248,320
Model type
qwen3_5
Quantization
modelopt

Identity and Version

Repository
ornith-ai/Ornith-1.5-9B-NVFP4
Publisher
Ornith
Task
Text generation
Modality
Text
Library
transformers
Parameters
6.7B parameters
Languages
Not stated by the source
Revision
155f200d85ad58464571c77d5e1122ea5d419d7b
First published
2026-08-26
Last updated
2026-08-26

Files and Weights

17 files, 8.8 GB in total. The weights are 1 file totalling 8.8 GB in safetensors.

Weights1 file · 8.8 GB
Configuration6 files · 68.3 KB
Tokenizer4 files · 22.9 MB
Documentation1 file · 26.8 KB
Other3 files · 1.7 MB
Repository2 files · 118.5 KB
Every file
FileTypeSizeSHA-256
model.safetensorsWeights8.8 GB 1cdf915951ce
config.jsonConfiguration38.5 KB
generation_config.jsonConfiguration206 B
hf_quant_config.jsonConfiguration27.6 KB
preprocessor_config.jsonConfiguration390 B
processor_config.jsonConfiguration1.2 KB
video_preprocessor_config.jsonConfiguration385 B
README.mdDocumentation26.8 KB
assets/ornith_9b_eval.pngOther724.3 KB 5f13eb1febaa
assets/ornith_logo.pngOther962.4 KB 458ee0d85bae
chat_template.jinjaOther7.6 KB
.gitattributesRepository1.7 KB
.quant_summary.txtRepository116.8 KB
merges.txtTokenizer3.4 MB
tokenizer.jsonTokenizer12.8 MB 5f9e4d4901a9
tokenizer_config.jsonTokenizer16.7 KB
vocab.jsonTokenizer6.7 MB

License and Download

License
mit
Access
Open weights, no gate
Download size
8.8 GB
Download from Ornith

Released by Ornith through its official repository on Hugging Face. Read the license.

Memory Requirements

PrecisionWeights in memory
As published8.8 GB
16-bit13.5 GB
8-bit6.7 GB
4-bit3.4 GB

Weights only, from the published parameter count; the key-value cache and runtime add to this.

Questions About Ornith-1.5-9B-NVFP4

How much GPU memory does Ornith-1.5-9B-NVFP4 need?

About 16.1 GB at 16-bit and 4 GB at 4-bit: the weights (6.7B parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run Ornith-1.5-9B-NVFP4 on?

At 16-bit, 1x MI300X from $1.85 an hour; at 4-bit, 1x MI300X from $1.85 an hour, at the lowest on-demand prices the SAVRN Index lists.

Can I use Ornith-1.5-9B-NVFP4 commercially?

Yes. Ornith-1.5-9B-NVFP4 is released under MIT License. The MIT License is a short permissive license. It permits commercial use, modification and redistribution, provided the copyright notice and permission notice are included.

What is Ornith-1.5-9B-NVFP4's context length?

262,144 tokens, from the maximum position embeddings in its published configuration.

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