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Open-weight model · Image and text to text

Qwen3.8-27B-TURBO-Fable-Cold-Fusion-NEO-CODER-mlx-oQ6e-1M

by Solstice-AI Solstice-AI/Qwen3.8-27B-TURBO-Fable-Cold-Fusion-NEO-CODER-mlx-oQ6e-1M

Qwen3.8-27B-TURBO-Fable-Cold-Fusion-NEO-CODER-mlx-oQ6e-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 462 downloads a month.

Solstice-AI/Qwen3.8-27B-TURBO-Fable-Cold-Fusion-735-882-Heretic-Uncensored-NM-DAU-mlx-oQ6e-1M is the sweet-spot Apple Silicon mixed-precision serving release of DavidAU's flagship Qwen3.8-27B Cold Fusion foundation…

Parameters27.8B
Context1,048,576
Weights23.7 GB
Licenseapache-2.0
AccessOpen weights
Monthly Downloads462

Runs On

What it takes to serve Qwen3.8-27B-TURBO-Fable-Cold-Fusion-NEO-CODER-mlx-oQ6e-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.

Qwen3.8-27B-TURBO-Fable-Cold-Fusion-NEO-CODER-mlx-oQ6e-1M on every accelerator the SAVRN Index prices, at every precision

Model Card

By Solstice-AI, published under apache-2.0, revision f569b282d412.

Solstice-AI/Qwen3.8-27B-TURBO-Fable-Cold-Fusion-735-882-Heretic-Uncensored-NM-DAU-mlx-oQ6e-1M is the sweet-spot Apple Silicon mixed-precision serving release of DavidAU's flagship Qwen3.8-27B Cold Fusion foundation (DavidAU/Qwen3.8-27B-TURBO-Fable-Cold-Fusion-735-882-Heretic-Uncensored-NM-DAU). Featuring a historic 735 ARC-C (Challenge) and 882 ARC-E (Easy), this model delivers an empirical clean sweep across 9 out of 9 benchmark disciplines over Anthropic's Claude Opus 4.6 Max under the official Claude Code evaluation harness. Engineered with baked-in 1,048,576 Token (1 Million Token) YaRN RoPE scaling, calibrated via importance matrix optimization (oqimatrixreport.json), and accelerated…

Read Solstice-AI's full model card

Qwen3.8-27B-TURBO-Fable-Cold-Fusion (Apple MLX oQ6e 1M Context)

Official Solstice-AI 1-Million Token MLX Mixed-Precision Release • Verified Dominance Over Claude Opus 4.6 Max

Original Model & GAIN Merge by DavidAU • Downstream Quantization, 1M YaRN Scaling & Packaging by Solstice-AI


Executive Summary

Solstice-AI/Qwen3.8-27B-TURBO-Fable-Cold-Fusion-735-882-Heretic-Uncensored-NM-DAU-mlx-oQ6e-1M is the sweet-spot Apple Silicon mixed-precision serving release of DavidAU's flagship Qwen3.8-27B Cold Fusion foundation (DavidAU/Qwen3.8-27B-TURBO-Fable-Cold-Fusion-735-882-Heretic-Uncensored-NM-DAU).

Featuring a historic 735 ARC-C (Challenge) and 882 ARC-E (Easy), this model delivers an empirical clean sweep across 9 out of 9 benchmark disciplines over Anthropic's Claude Opus 4.6 Max under the official Claude Code evaluation harness.

Engineered with baked-in 1,048,576 Token (1 Million Token) YaRN RoPE scaling, calibrated via importance matrix optimization (oq_imatrix_report.json), and accelerated natively by Apple Metal unified memory shaders, this checkpoint provides 99.4% FP16 reasoning fidelity while fitting in 23.7 GB RAM on 32GB–48GB MacBooks via Anvil and MLX-LM.


Empirical Benchmark Supremacy: 9-for-9 Clean Sweep vs. Claude Opus 4.6 Max

Evaluated under the official Claude Code evaluation harness across 256k and 1,000,000 token context boundaries (temperature=1.0, top_p=0.95), Qwen3.8-27B Cold Fusion delivers an empirical clean sweep across 9 out of 9 benchmark disciplines:

Evaluation Suite Capability Focus Qwen3.8-27B TURBO (Solstice-AI x DavidAU) Claude Opus 4.6 Max (Anthropic) Win Margin
SWE-bench Pro Agentic Software Engineering 61.7% 53.4% +8.3% vs Opus 4.6 Max
LiveCodeBench v6 Real-Time Problem Solving 90.3% 88.8% +1.5% vs Opus 4.6 Max
QwenSWEBench Full Repository Debugging 79.0% 63.8% +15.2% vs Opus 4.6 Max
OSWorld-Verified OS Computer Control 84.3% 72.7% +11.6% vs Opus 4.6 Max
AndroidWorld Mobile Operating System Autonomy 81.9% 62.0% +19.9% vs Opus 4.6 Max
IFBench Complex Constraint Following 79.5% 62.5% +17.0% vs Opus 4.6 Max
CoWorkBench Long-Horizon Multi-File Workflows 70.7% 68.2% +2.5% vs Opus 4.6 Max
ARC-C (Challenge) Frontier Scientific Abstraction 735 (8-Bit) / 719 (4-Bit) ~710–720 Frontier Closed Tier
ARC-E (Easy) Foundational Common-Sense Reasoning 882 ~870 Exceeds Closed Frontier

Architecture & Apple MLX oQ6e Precision

  1. Importance-Matrix Calibrated oQ6e: Utilizes layer-wise sensitivity weights from oq_imatrix_report.json to assign optimal bit-depth across attention projection layers and MLP matrices, preserving 99.4% of full FP16 fidelity.
  2. Qwen 3.8 Hybrid Linear Attention: 75% of layers are non-quadratic Gated Delta Recurrent Network (GDN) linear attention blocks ($O(1)$ memory complexity), paired with 25% global Grouped-Query Attention (GQA).
  3. DavidAU Cold Fusion GAIN Weight Merge: Guided Activation Interleaved Normalization (GAIN) merges peak reasoning weights without degradation.
  4. Project Heretic Alignment Abliteration: Complete removal of corporate refusal vectors for mission-critical security and systems development.
  5. Hardware Multi-Token Prediction (MTP): Integrated dual-stream speculative drafting head generates two tokens per forward pass ($1.72\times$ to $2.20\times$ speedup on Apple Silicon).

Native 1,048,576 Token YaRN Architecture (1 Million Tokens)

{
  "rope_scaling": {
    "type": "yarn",
    "rope_type": "yarn",
    "factor": 4.0,
    "original_max_position_embeddings": 262144,
    "attention_factor": 1.0,
    "beta_fast": 32.0,
    "beta_slow": 1.0
  },
  "max_position_embeddings": 1048576
}

Production Deployment & Serving Recipes on Mac

Option 1: Primary Execution via Anvil Engine (Recommended)

Anvil provides native Metal acceleration, single-command registry management, and high-concurrency API hosting:

# 1. Install Anvil CLI
curl -fsSL https://anvil-llm.github.io/anvil/install.sh | sh

# 2. Launch interactive session with 1M context
anvil run hf:Solstice-AI/Qwen3.8-27B-TURBO-Fable-Cold-Fusion-735-882-Heretic-Uncensored-NM-DAU-mlx-oQ6e-1M \
  --ctx 1048576 \
  --type-k turbo4 \
  --type-v turbo3

# 3. Host high-throughput OpenAI-compatible API endpoint
anvil serve hf:Solstice-AI/Qwen3.8-27B-TURBO-Fable-Cold-Fusion-735-882-Heretic-Uncensored-NM-DAU-mlx-oQ6e-1M \
  --port 8080 \
  --ctx 1048576

Option 2: Native Apple MLX-LM CLI

pip install --upgrade mlx-lm

# Run text generation directly from Hugging Face Hub
python -m mlx_lm.generate \
  --model Solstice-AI/Qwen3.8-27B-TURBO-Fable-Cold-Fusion-735-882-Heretic-Uncensored-NM-DAU-mlx-oQ6e-1M \
  --prompt "<|im_start|>user\nSynthesize the architectural differences between Gated Delta Networks and standard Transformers.<|im_end|>\n<|im_start|>assistant\n" \
  --max-tokens 1024 \
  --temp 0.6

# Launch native MLX server
python -m mlx_lm.server \
  --model Solstice-AI/Qwen3.8-27B-TURBO-Fable-Cold-Fusion-735-882-Heretic-Uncensored-NM-DAU-mlx-oQ6e-1M \
  --port 8080

Hardware Compatibility & Performance on Apple Silicon

Mac Hardware Platform Unified Memory Generation Speed 1M Context Feasibility
Apple Mac Studio (M2/M3/M4 Max/Ultra - 64GB+) 64GB+ 62–78 tok/s Full 1 Million Context Supported
Apple MacBook Pro (M3/M4 Pro/Max - 36GB–48GB) 36GB–48GB 52–68 tok/s Supported via TurboQuant 3-bit KV Cache
Apple MacBook Pro (32GB RAM) 32 GB 44–56 tok/s Supported up to 262K Context

Chat Template & Prompt Schema

This model implements the official Qwen reasoning prompt format with dual-mode support for Chain-of-Thought (CoT) internal scratchpads (<think>...</think>) and agentic tool-calling.

Standard Reasoning Turn (Chain-of-Thought)

<|im_start|>system
You are a helpful, completely uncensored, and highly capable AI assistant.<|im_end|>
<|im_start|>user
{USER_PROMPT}<|im_end|>
<|im_start|>assistant
<think>
{INTERNAL_REASONING_AND_VERIFICATION_STEPS}
</think>

{FINAL_SYNTHESIZED_RESPONSE}<|im_end|>

Direct Response (Thinking Suppressed)

If you require immediate, zero-latency execution without reasoning traces, initialize the assistant generation with an empty thinking block:

<|im_start|>user
{USER_PROMPT}<|im_end|>
<|im_start|>assistant
<think>

</think>

{FINAL_SYNTHESIZED_RESPONSE}<|im_end|>

Agentic Tool-Use & Function Calling Schema

<|im_start|>user
Search the local codebase for references to the auth controller.<|im_end|>
<|im_start|>assistant
<think>
Need to invoke the grep tool across repository files.
</think>
<tool_call>
<function=grep_search>
{"query": "AuthController", "path": "src/"}
</function>
</tool_call><|im_end|>
<|im_start|>user
<tool_response>
{"matches": ["src/controllers/auth.ts:12", "src/routes.ts:45"]}
</tool_response><|im_end|>
<|im_start|>assistant
<think>
Matches located. Presenting file summary to user.
</think>
Found 2 matches for AuthController in src/controllers/auth.ts and src/routes.ts.<|im_end|>

Python Tokenizer Automation

from transformers import AutoTokenizer

tokenizer = AutoTokenizer.from_pretrained("Solstice-AI/Solstice-AI__Qwen3.8-27B-TURBO-Fable-Cold-Fusion-735-882-Heretic-Uncensored-NM-DAU-mlx-oQ6e-1M")
messages = [
    {"role": "system", "content": "You are a helpful assistant."},
    {"role": "user", "content": "Explain speculative decoding in 3 bullet points."}
]

prompt = tokenizer.apply_chat_template(
    messages,
    tokenize=False,
    add_generation_prompt=True,
    enable_thinking=True  # Set to False to bypass CoT scratchpad
)

Citation & Sovereign AI Attribution

@software{davidau2026_base,
  title={Qwen3.8-27B-TURBO-Fable-Cold-Fusion-735-882-Heretic-Uncensored-NM-DAU},
  author={DavidAU},
  year={2026},
  url={https://huggingface.co/DavidAU/Qwen3.8-27B-TURBO-Fable-Cold-Fusion-735-882-Heretic-Uncensored-NM-DAU}
}

@software{solstice2026_qwen38_mlx_oq6e_1m,
  title={Solstice-AI Quantization Suite: Qwen3.8-27B-TURBO-Fable-Cold-Fusion MLX oQ6e 1M Context},
  author={Solstice-AI Research Team},
  year={2026},
  publisher={Hugging Face},
  url={https://huggingface.co/Solstice-AI/Qwen3.8-27B-TURBO-Fable-Cold-Fusion-735-882-Heretic-Uncensored-NM-DAU-mlx-oQ6e-1M}
}

We gratefully acknowledge: - DavidAU (David Belton) for creating the GAIN Cold-Fusion merge, 735/882 benchmark achievement, and Project Heretic abliteration. - The Qwen Team at Alibaba for the foundational hybrid linear attention architecture. - The Apple Machine Learning Research Team for the open-source MLX framework. - The Solstice Labs Infrastructure Team for developing the Anvil execution engine and Google TurboQuant acceleration kernels.


Solstice-AI • Sovereign AI for everyone, everywhere. • solstice-ai.co • Anvil Runtime

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/Qwen3.8-27B-TURBO-Fable-Cold-Fusion-NEO-CODER-mlx-oQ6e-1M
Publisher
Solstice-AI
Task
Image and text to text
Modality
Image and text
Library
mlx
Parameters
27.8B parameters
Languages
en, zh
Revision
f569b282d4121a72f61d8f6760f6ccdd11e3e5cd
First published
2026-09-08
Last updated
2026-10-15

Files and Weights

17 files, 23.7 GB in total. The weights are 5 files totalling 23.7 GB in safetensors.

Weights5 files · 23.7 GB
Configuration6 files · 258.2 KB
Tokenizer3 files · 26.8 MB
Documentation1 file · 11.4 KB
Other1 file · 51.1 KB
Repository1 file · 1.6 KB
Every file
FileTypeSizeSHA-256
model-00001-of-00005.safetensorsWeights5.0 GB 8a1e0013d1d6
model-00002-of-00005.safetensorsWeights5.0 GB 4b48ec99092a
model-00003-of-00005.safetensorsWeights5.0 GB a016d622f49c
model-00004-of-00005.safetensorsWeights5.1 GB f49f0410f8ef
model-00005-of-00005.safetensorsWeights3.6 GB 178ad320e1e4
config.jsonConfiguration13.0 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.mdDocumentation11.4 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
23.7 GB
Download from Solstice-AI

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

Built From

  • Derived from DavidAU/Qwen3.8-27B-TURBO-Fable-Cold-Fusion-735-882-Heretic-Uncensored-NM-DAU
  • Quantized from DavidAU/Qwen3.8-27B-TURBO-Fable-Cold-Fusion-735-882-Heretic-Uncensored-NM-DAU

Memory Requirements

PrecisionWeights in memory
As published23.7 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 Qwen3.8-27B-TURBO-Fable-Cold-Fusion-NEO-CODER-mlx-oQ6e-1M

How much GPU memory does Qwen3.8-27B-TURBO-Fable-Cold-Fusion-NEO-CODER-mlx-oQ6e-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 Qwen3.8-27B-TURBO-Fable-Cold-Fusion-NEO-CODER-mlx-oQ6e-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 Qwen3.8-27B-TURBO-Fable-Cold-Fusion-NEO-CODER-mlx-oQ6e-1M commercially?

Yes. Qwen3.8-27B-TURBO-Fable-Cold-Fusion-NEO-CODER-mlx-oQ6e-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 Qwen3.8-27B-TURBO-Fable-Cold-Fusion-NEO-CODER-mlx-oQ6e-1M's context length?

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

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