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Open-weight model · Image and text to text

Qwopus3.8-27B-Flash-mlx-oQ4e-1M

by Solstice-AI Solstice-AI/Qwopus3.8-27B-Flash-mlx-oQ4e-1M

Qwopus3.8-27B-Flash-mlx-oQ4e-1M is an open-weight model for image and text to text from Solstice-AI, released under Apache License 2.0. It has 27.8B parameters and a 1,048,576-token context. At 16-bit it needs about 66.7 GB of GPU memory, which fits on 1x MI300X from $1.85 an hour, at the lowest prices in the SAVRN Index. It draws 295 downloads a month.

Solstice-AI/Qwopus3.8-27B-Flash-mlx-oQ4e-1M provides the official, production-grade Apple Silicon MLX (oQ4e) release of Qwopus3.8-27B-Flash with a native-behaving 1,048,576-token (1M) context window.

Parameters27.8B
Context1,048,576
Weights17.0 GB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads295

Runs On

What it takes to serve Qwopus3.8-27B-Flash-mlx-oQ4e-1M (27.8B 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 55.6 GB 66.7 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
8-bit 27.8 GB 33.3 GB 1x MI300X (192 GB)
Vultr
$1.85 1x H100 $1.99 · 1x MI325X $2.00
4-bit 13.9 GB 16.7 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 Oct 16, 2026.

Qwopus3.8-27B-Flash-mlx-oQ4e-1M on every accelerator the SAVRN Index prices, at every precision

Model Card

By Solstice-AI, published under apache-2.0, revision fceeadf79d4c.

Solstice-AI/Qwopus3.8-27B-Flash-mlx-oQ4e-1M provides the official, production-grade Apple Silicon MLX (oQ4e) release of Qwopus3.8-27B-Flash with a native-behaving 1,048,576-token (1M) context window. Official Apple Silicon MLX oQ4e mixed-precision release tailored for macOS unified memory execution with native-behaving 1M context. Evaluated under the standardized benchmark harness: 1M YaRN Scaling & Quantization Suite: Solstice-AI

Read Solstice-AI's full model card

Qwopus3.8-27B-Flash-1M (Apple Silicon MLX (oQ4e))

Official Solstice-AI Quantization • Native-Like 1M Context Window • Full Multimodal Vision • Zero Command Flags Required


Model Overview

Solstice-AI/Qwopus3.8-27B-Flash-mlx-oQ4e-1M provides the official, production-grade Apple Silicon MLX (oQ4e) release of Qwopus3.8-27B-Flash with a native-behaving 1,048,576-token (1M) context window.

Official Apple Silicon MLX oQ4e mixed-precision release tailored for macOS unified memory execution with native-behaving 1M context.

Key Specifications

Attribute Specification
Base Model Jackrong/Qwopus3.8-27B-Flash
Architecture Qwen3.5 / Qwopus Conditional Generation with Multimodal Vision
Quantization Format Apple Silicon MLX oQ4e (Mixed-precision with BF16 attention & projections)
Context Window 1,048,576 tokens (1M native YaRN context)
Target Platform Apple Silicon Macs (M-series with unified memory)
Target Engine MLX, mlx-lm

Benchmark Highlights & Validation

Evaluated under the standardized benchmark harness:

Benchmark Suite Discipline Qwopus3.8-27B-Flash (1M) Claude Opus 4.6 Max GPT-4o
SWE-bench Pro Agentic Software Engineering 61.7% 53.4% 48.9%
LiveCodeBench v6 Algorithmic Problem Solving 90.3% 88.8% 72.8%
QwenSWEBench Complex Architecture Refactoring 79.0% 63.8% 61.2%
OSWorld-Verified Desktop & Operating System Automation 84.3% 72.7% 58.7%
ARC-C (Challenge) Frontier Scientific Reasoning 735 (8-Bit) / 719 (4-Bit) ~710–720 63.8%
Long-Context Needle 256K → 1M Tokens Retrieval 100% (Bit-Exact) Pass Pass

Attribution & Acknowledgments

Configuration

Architecture
Qwen3_5ForConditionalGeneration
Context length (tokens)
1,048,576
Layers
64
Hidden size
5,120
Feed-forward size
17,408
Attention heads
24
Key/value heads
4
Head dimension
256
Vocabulary size
248,320
Stored precision
bfloat16
Model type
qwen3_5

Identity and Version

Repository
Solstice-AI/Qwopus3.8-27B-Flash-mlx-oQ4e-1M
Publisher
Solstice-AI
Task
Image and text to text
Modality
Image and text
Library
mlx
Parameters
27.8B parameters
Languages
en, zh
Revision
fceeadf79d4c8379e57689ba5b5a730a40db835f
First published
2026-09-09
Last updated
2026-10-15

Files and Weights

16 files, 17.0 GB in total. The weights are 4 files totalling 17.0 GB in safetensors.

Weights4 files · 17.0 GB
Configuration6 files · 279.3 KB
Tokenizer3 files · 26.8 MB
Documentation1 file · 3.2 KB
Other1 file · 51.1 KB
Repository1 file · 1.6 KB
Every file
FileTypeSizeSHA-256
model-00001-of-00004.safetensorsWeights5.0 GB 33b99736a57f
model-00002-of-00004.safetensorsWeights5.0 GB 4a3ec7e9b86b
model-00003-of-00004.safetensorsWeights5.0 GB 34fe487e3e81
model-00004-of-00004.safetensorsWeights1.9 GB 438c59df9a49
config.jsonConfiguration34.0 KB —
generation_config.jsonConfiguration213 B —
model.safetensors.index.jsonConfiguration212.2 KB —
oq_imatrix_report.jsonConfiguration31.3 KB —
preprocessor_config.jsonConfiguration390 B —
processor_config.jsonConfiguration1.2 KB —
README.mdDocumentation3.2 KB —
chat_template.jinjaOther51.1 KB —
.gitattributesRepository1.6 KB —
tokenizer.jsonTokenizer20.0 MB 87a7830d63fc
tokenizer_config.jsonTokenizer59.4 KB —
vocab.jsonTokenizer6.7 MB —

License and Download

License
apache-2.0
Access
Open weights, no gate
Download size
17.0 GB
Download from Solstice-AI

Released by Solstice-AI through its official repository on Hugging Face. Read the license.

Built From

  • Derived from Jackrong/Qwopus3.8-27B-Flash
  • Quantized from Jackrong/Qwopus3.8-27B-Flash

Memory Requirements

PrecisionWeights in memory
As published17.0 GB
16-bit55.6 GB
8-bit27.8 GB
4-bit13.9 GB

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

Questions About Qwopus3.8-27B-Flash-mlx-oQ4e-1M

How much GPU memory does Qwopus3.8-27B-Flash-mlx-oQ4e-1M need?

About 66.7 GB at 16-bit and 16.7 GB at 4-bit: the weights (27.8B parameters) plus a working margin. A long context needs more.

What is the cheapest GPU to run Qwopus3.8-27B-Flash-mlx-oQ4e-1M 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 Qwopus3.8-27B-Flash-mlx-oQ4e-1M commercially?

Yes. Qwopus3.8-27B-Flash-mlx-oQ4e-1M is released under Apache License 2.0. The Apache License 2.0 is a permissive open-source license. It permits commercial use, modification and redistribution. It requires keeping the license and copyright notices and any NOTICE file, stating significant changes, and it includes an express patent grant from contributors.

What is Qwopus3.8-27B-Flash-mlx-oQ4e-1M's context length?

1,048,576 tokens, from the maximum position embeddings in its published configuration.

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