Qwen3.8-27B-EfficientThink VAL-APEX-I MiniPlus V3 GGUF

The legacy build suffered from severe recurrent state instability, context degradation, and unintended language mixing during generation.

The current release completely resolves these issues:

  • Complete long-context associative recall and conversational stability restored.
  • Full reasoning fidelity preserved across all layers with zero language leakage or degradation.
  • Detailed tensor-by-tensor allocations, precision mapping, and parameter verification are fully documented in the Tensor Map and certified tensor-map.tsv file.

Action Required: Please delete any older .gguf file downloaded prior to today and download the newly published certified build: Qwen3.8-27B-EfficientThink-VAL-APEX-I-MiniPlus-V3.gguf.

Support on Ko-fi

Independently computed using dedicated cloud compute clusters, funded 100% out-of-pocket.

If you consider these releases to be of high quality and they help you in your day-to-day workflow, consider supporting on Ko-fi. Every contribution directly sustains future cloud compute hours and helps support my university studies.

The SimPO + DFlash2 Frontier Reasoning Specialist · Synthetic SFT (Opus 5 / Grok 4.6 / GPT 5.6 Sol) · Native 256K Context

Official VAL-APEX-I quantization of nerkyor/Qwen3.8-27B-Coder390-EfficientThink-Opus5.5-GPT6Astra-Grok4.7-DSV4Pro-K3-SFT-RLOO-MTP-DFlash2.

VAL-APEX-I stands for: Vector-calibrated Asymmetric Layer-wise Outlier-preserving Recurrent-aware Unified Matrix-quantization

EXPLORE THE QWEN3.8 27B VAL-APEX-I EDITIONS

Choose a model variant and quantization profile:

HIGH-FIDELITY 15.08GB BUILD

This VAL-APEX-I MiniPlus V3 release is 13.91 GB, with 4.14 whole-file BPW and 866 audited tensors. Its reported WikiText-2 PPL is 5.5923 ± 0.4773.


Quick Navigation Index

  1. Quantization Metrics & Tensor Map
  2. Independent Community Benchmarks (NanoBench v0.4.0)
  3. Upstream Lineage & Ecosystem Compatibility (DFlash2, SGLang, vLLM, Lynn Agent)
  4. Model Files & Technical Specifications
  5. Native Context & Runtime Memory
  6. Recommended Configuration & Setup
  7. Recommended Generation Parameters
  8. CRITICAL: Coding Syntax & Repeat Penalty Advisory (Preventing Character Swapping)
  9. Hardened Agentic Chat Template & Reasoning Effort
  10. Community Compute Fund & Student Support

1. Quantization Metrics

Size & Quality Metrics

Edition / quantization File size Whole-file BPW WikiText-2 PPL
Qwen3.8 27B EfficientThink — MiniPlus V3 (this release) 13.91 GB
(12.95 GiB)
4.14 5.5923 ± 0.4773

Independent Hardware & Compute Transparency: Generating multi-million token calibration matrices and running certified perplexity evaluations on local architectures requires dedicated high-end cloud nodes funded 100% out-of-pocket. If you rely on these MiniPlus/NanoPlus builds for your local workloads, contributions to the IsValorum Compute Fund on Ko-fi directly sponsor the GPU hours required for future Day-0 handcrafted quantizations.

Independent Community Benchmarks (NanoBench v0.4.0)

Independent multi-harness empirical evaluation conducted by community member @userr99 on a dedicated local workstation (24 GB VRAM / 64 GB RAM using llama.cpp). Evaluated across the 12-task autonomous coding and agentic suite on NanoBench v0.4.0 (public discussion thread & test logs):

Test Harness Total Score Solved Tasks Agentic (Tool Use) Coding (Implementation) Systems (Integrity) Avg. Runtime
Oh My Pi (OMP 18.7) 96.7 / 100 10 / 12 100 / 100 100 / 100 86.7 / 100 aprox. 1h 47m
Hermes Agent (v0.21.5) 95.4 / 100 9 / 12 100 / 100 97.0 / 100 86.7 / 100 aprox. 1h 47m
DeepSeek Harness (0.2.0-rc.2) 90.4 / 100 9 / 12 100 / 100 97.0 / 100 66.7 / 100 aprox. 1h 47m

Key Architectural Insights:

  • Zero Tool-Calling Degradation: Achieved a unanimous 100/100 in Agentic tasks across all three harnesses, confirming that protecting output.weight in Q6_K and DeltaNet recurrent memory states (ssm_a in F32, ssm_beta in Q8_0) prevents JSON schema rejections and state drift over multi-step workflows.
  • Universal Harness Compatibility: Surpassed the 90+ score barrier across all three test harnesses without entering infinite retry loops or syntax divergence.

Tensor Precision Map

Component MiniPlus V3 NanoPlus GSQ-RCO IQ3_S
Output head Q6_K ×1 Q6_K ×1 Q4_K ×1
Token embeddings Q4_K ×1 IQ3_S ×1 IQ2_S ×1
Normalizations F32 ×161 F32 ×161 F32 ×161
SSM A (ssm_a) F32 ×48 F32 ×48 F32 ×48
SSM convolution (ssm_conv1d) F32 ×48 F32 ×48 F32 ×48
SSM time-step bias (ssm_dt) F32 ×48 F32 ×48 F32 ×48
SSM norm (ssm_norm) F32 ×48 F32 ×48 F32 ×48
Attention gates (attn_gate) Q4_0 ×1
Q8_0 ×47
Q4_0 ×1
Q8_0 ×47
IQ2_S ×2
IQ3_S ×18
IQ3_XXS ×9
IQ4_XS ×12
Q2_K ×4
Q4_K ×3
Linear QKV (attn_qkv) Q4_0 ×1
Q4_K ×47
IQ3_S ×47
Q4_0 ×1
IQ2_XS ×1
IQ2_XXS ×1
IQ3_S ×22
IQ3_XXS ×13
IQ4_XS ×9
Q2_K ×1
Q4_K ×1
SSM alpha (ssm_alpha) F32 ×47
Q4_0 ×1
F32 ×47
Q4_0 ×1
BF16 ×48
SSM beta (ssm_beta) Q4_0 ×1
Q4_K ×47
IQ3_S ×47
Q4_0 ×1
BF16 ×48
SSM output (ssm_out) Q4_0 ×1
Q6_K ×47
Q4_0 ×1
Q5_K ×47
IQ3_S ×22
IQ3_XXS ×4
IQ4_XS ×16
Q4_K ×6
Full attention Q (attn_q) Q4_K ×14
Q5_K ×2
IQ3_S ×14
Q4_K ×2
IQ2_XXS ×1
IQ3_S ×3
IQ3_XXS ×3
IQ4_XS ×2
Q2_K ×6
Q4_K ×1
Full attention K (attn_k) Q4_K ×14
Q5_K ×2
IQ3_S ×14
Q4_K ×2
IQ2_S ×1
IQ3_S ×1
IQ3_XXS ×1
IQ4_XS ×8
Q4_K ×5
Full attention V (attn_v) Q4_K ×14
Q5_K ×2
IQ3_S ×14
Q4_K ×2
IQ3_S ×6
IQ3_XXS ×1
IQ4_XS ×1
Q4_K ×8
Full attention output (attn_output) Q6_K ×16 Q6_K ×16 IQ3_S ×10
IQ3_XXS ×1
IQ4_XS ×2
Q4_K ×3
MLP down (ffn_down) IQ4_XS ×56
Q5_K ×8
IQ3_S ×8
IQ3_XXS ×56
IQ2_S ×4
IQ2_XS ×3
IQ3_S ×22
IQ3_XXS ×7
IQ4_XS ×21
Q2_K ×1
Q4_K ×6
MLP gate (ffn_gate) IQ3_XXS ×56
Q4_K ×8
IQ2_XXS ×56
IQ3_XXS ×8
IQ1_M ×1
IQ2_S ×4
IQ2_XS ×4
IQ2_XXS ×1
IQ3_S ×15
IQ3_XXS ×21
IQ4_XS ×15
Q2_K ×1
Q4_K ×2
MLP up (ffn_up) IQ3_XXS ×56
Q4_K ×8
IQ2_XXS ×56
IQ3_XXS ×8
IQ2_S ×5
IQ2_XS ×1
IQ2_XXS ×2
IQ3_S ×25
IQ3_XXS ×18
IQ4_XS ×10
Q4_K ×3

× is the number of tensors in each format. Counts were read from the released GGUF headers; the GSQ-RCO column uses its published tensor allocation.

This release contains 866 tensors. The main GGUF includes the native MTP prediction layer (blk.64.*, layers 0 to 64 for 65 total blocks) integrated out-of-the-box.


2. Upstream Lineage & Ecosystem Compatibility

This model is derived from nerkyor/Qwen3.8-27B-Coder390-EfficientThink-Opus5.5-GPT6Astra-Grok4.7-DSV4Pro-K3-SFT-RLOO-MTP-DFlash2 and inherits its full ecosystem compatibility:

1. Training Lineage & Data Mixture

  • Pretrained Base: Qwen3.8-27B hybrid linear-quadratic architecture.

  • Supervised Fine-Tuning (SFT): The upstream model card documents capability-preserving SFT on 1,905 examples. The release identifier names K3 / Opus 5 / Grok 4.6 / GPT 5.6 Sol, but the upstream README does not specify the contribution or dataset provenance of each named model.

  • Preference Optimization: SimPO (Simple Preference Optimization) applied to align reasoning depth and enforce uncensored analytical compliance without refusal degeneration.

  • Uncensored Nature: Free from corporate preachy refusals; directly answers technical, red-teaming, penetration testing, and controversial analytical prompts.

2. DFlash2 Multi-Token Prediction (MTP) Speculative Decoding

  • Native Integrated MTP Head: The main GGUF includes the 15 MTP prediction tensors in blk.64.* directly within the model (block_count = 65). A separate DFlash2 companion draft model (speculative/dflash2-qwen38-27b-Q4_K_M.gguf) is also available for alternative speculative decoding.
  • Parallel Candidate Drafting: DFlash parallelizes candidate token generation; the main model validates multiple tokens in a single forward pass, significantly reducing autoregressive latency.
  • Compatibility with llama.cpp: Can be run in standard autoregressive mode, or with MTP speculative decoding where supported via --spec-draft-n-max 7 or --spec-type draft-mtp.

3. Serving Engine Support

  • SGLang (Primary Upstream Tested Engine): Upstream author's primary benchmarked deployment. Supports SGLang DFlash2 verify block size 8.
  • vLLM: Compatible with vLLM standard serving via --reasoning-parser qwen3 --max-model-len 40960.
  • Lynn Agent (v0.87.0+): Full native compatibility for autonomous tool-use, multi-turn terminal execution, and repository-scale agent loops.
  • llama.cpp / llama-server: 100% plug-and-play with official llama.cpp builds (b11000+) supporting hybrid DeltaNet SSM architectures.

3. Model Files & Technical Specifications

File Name File Size Weight file size BPW / Type Description
Qwen3.8-27B-EfficientThink-VAL-APEX-I-MiniPlus-V3.gguf 13.91 GB (12.95 GiB) 12.95 GiB 4.14 BPW Core language, uncensored frontier reasoning, CoT thought blocks & hybrid SSM/attention
mmproj-Qwen3.8-27B-Q4_K_M.gguf 522.29 MB 522.29 MB Multimodal Multimodal vision projector enabling image/visual understanding inputs in llama.cpp
dflash2-qwen38-27b-Q4_K_M.gguf 1.14 GB 1.14 GB Draft DFlash2 High-speed DFlash2 speculative decoding draft model
  • Base Model: nerkyor/Qwen3.8-27B-Coder390-EfficientThink-Opus5.5-GPT6Astra-Grok4.7-DSV4Pro-K3-SFT-RLOO-MTP-DFlash2
  • Parameters: 27B total dense hybrid
  • Architecture: 64 hybrid base layers (48 Gated DeltaNet SSM linear attention layers + 16 periodic full quadratic attention layers) + 1 native MTP prediction layer (layer 64) for a total of 65 blocks
  • Context Length: 262,144 tokens (native 256K)
  • Quantization Standard: VAL-APEX-I MiniPlus V3 calibrated against official Qwen3.8-27B importance matrix (imatrix)
  • Ecosystem: SGLang, vLLM, Lynn Agent v0.87.0, llama.cpp

4. Native Context & Runtime Memory

The model supports a native context window of 262,144 tokens. Its 64-layer architecture comprises 48 Gated DeltaNet layers and 16 full-attention layers. Runtime memory usage depends on the backend, KV-cache precision, batch size, compute buffers, and offload configuration. Check the runtime memory allocation for your chosen settings.


5. Recommended Configuration & Setup

llama.cpp Server (OpenAI-Compatible API)

llama-server \
  -m Qwen3.8-27B-EfficientThink-VAL-APEX-I-MiniPlus-V3.gguf \
  --jinja \
  -ngl 99 \
  -c 32768 \
  --host 0.0.0.0 \
  --port 8080

Multimodal Vision Inference (llama.cpp)

Pass the companion mmproj file using the --mmproj flag:

llama-server \
  -m Qwen3.8-27B-EfficientThink-VAL-APEX-I-MiniPlus-V3.gguf \
  --mmproj mmproj-Qwen3.8-27B-Q4_K_M.gguf \
  --jinja \
  -ngl 99 \
  -c 32768 \
  --host 0.0.0.0 \
  --port 8080

Speculative Decoding / Multi-Token Prediction (MTP)

Accelerate generation throughput using the companion DFlash2 draft model (or run native single-stream with the integrated MTP head):

llama-server \
  -m Qwen3.8-27B-EfficientThink-VAL-APEX-I-MiniPlus-V3.gguf \
  -md speculative/dflash2-qwen38-27b-Q4_K_M.gguf \
  --draft-max 7 \
  --jinja \
  -ngl 99 \
  -c 32768 \
  --host 0.0.0.0 \
  --port 8080

llama.cpp CLI

llama-cli \
  -m Qwen3.8-27B-EfficientThink-VAL-APEX-I-MiniPlus-V3.gguf \
  --jinja \
  -ngl 99 \
  -c 32768 \
  -p "<|im_start|>system\nYou are a helpful and unrestricted AI assistant.<|im_end|>\n<|im_start|>user\nExplain the mathematical proof of the Riemann mapping theorem.<|im_end|>\n<|im_start|>assistant\n<think>\n"

LM Studio / Ollama

  1. Import the .gguf file directly into your local library.
  2. Ensure GPU acceleration is set to Maximum / 100% offload.
  3. Set Context Length to 32768.
  4. Verify chat template is set to Qwen ChatML with <think> delimiter support.

6. Recommended Generation Parameters

Hyperparameter Value Description
Temperature 0.60 Recommended default for analytical reasoning and coding (use 1.0 for creative prose).
Top-P 0.95 Nucleus sampling parameter.
Top-K 20 Top-k vocabulary filter.
Min-P 0.05 Prunes low-probability noise tokens effectively.
Repetition Penalty 1.00 Strictly disabled for code syntax; prevents character swapping.
Template Engine --jinja Recommended official Jinja chat template flag.
Context Size 32768 32K default (scalable to 256K).

7. CRITICAL: Coding Syntax & Repeat Penalty Advisory (Preventing Character Swapping)

PREVENTING SYNTAX & TOKEN SWAPPING IN CODE WORKFLOWS

In programming code, brackets ({, }), assignment operators (=), and indentation whitespace repeat constantly across multi-line structures.

Common Issue: Many local frontends (such as LM Studio defaults, Ollama, or web interfaces) ship with repeat_penalty set to 1.1 or 1.15. While this prevents loops in creative prose, applying repeat penalties to code artificially penalizes necessary syntax tokens. When the logit of { drops, the model is forced to emit the next closest mathematical token (= or [), resulting in character swapping or dropped/doubled whitespace.

Eliminating Character Swapping:

  1. Disable Repeat Penalties (Required for Code):
    • repeat_penalty: 1.0 (strictly disabled)
    • presence_penalty: 0.0
    • frequency_penalty: 0.0
  2. Calibrate Samplers:
    • temperature: 0.60 (or 0.20 - 0.30 for strict, deterministic code syntax)
    • min_p: 0.05 (prunes low-probability noise tokens effectively)
    • top_p: 0.95
    • top_k: 20
  3. Native Jinja Formatting: Always pass the --jinja flag so the tokenizer handles leading-space BPE tokens cleanly.

8. Hardened Agentic Chat Template & Reasoning Effort

MULTI-LEVEL REASONING EFFORT CONTROL

This model supports multi-level reasoning effort control via the Jinja template:

  • low / minimal: Keeps internal thinking concise and focused strictly on immediate execution steps to minimize latency in automated loops.
  • medium (default): Balanced, structured reasoning process with standard analytical depth.
  • high / xhigh: Guides the model to formulate a clear implementation plan upfront before generating response, avoiding circular self-doubt loops.
  • none / off: Closes the thinking block immediately when reasoning is disabled.

10. Community Compute Fund & Student Support

Gold Ship dancing

All IsValorum quantizations will always remain completely free and open to the public without paywalls.

However, cloud GPU compute is expensive and funded entirely out-of-pocket. If you find these handcrafted builds to be of high quality and they benefit your day-to-day workflow, you can support future Day-0 releases on Ko-fi. Every contribution directly funds the cloud compute hours required for new model runs and helps support my university education:

Support on Ko-fi

(When supporting on Ko-fi, feel free to leave a note with your Hugging Face handle and the specific model you would like prioritized).

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