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Mungert/Jan-v2-VL-high-GGUF
Jan-v2-VL-high-GGUF is a image-text-to-text model from Mungert. Use it for the image-text-to-text task on the model card, and read the license before you ship it in a product. It is set up for transformers. The card lists the license as apache-2.0.
This model was generated using llama.cpp at commit becc4816d.
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From the Hugging Face model README
This model was generated using llama.cpp at commit becc4816d.
I've been experimenting with a new quantization approach that selectively elevates the precision of key layers beyond what the default IMatrix configuration provides.
In my testing, standard IMatrix quantization underperforms at lower bit depths, especially with Mixture of Experts (MoE) models. To address this, I'm using the --tensor-type option in llama.cpp to manually "bump" important layers to higher precision. You can see the implementation here:
👉 Layer bumping with llama.cpp
While this does increase model file size, it significantly improves precision for a given quantization level.

Jan-v2-VL is an 8B-parameter vision–language model for long-horizon, multi-step tasks in real software environments (e.g., browsers and desktop apps). It combines language reasoning with visual perception to follow complex instructions, maintain intermediate state, and recover from minor execution errors.
We recognize the importance of long-horizon execution for real-world tasks, where small per-step gains compound into much longer successful chains—so Jan-v2-VL is built for stable, many-step execution. For evaluation, we use The Illusion of Diminishing Returns: Measuring Long-Horizon Execution in LLMs, which measures execution length. This benchmark aligns with public consensus on what makes a strong coding model—steady, low-drift step execution—suggesting that robust long-horizon ability closely tracks better user experience.
Variants
Tasks where the plan and/or knowledge can be provided up front, and success hinges on stable, many-step execution with minimal drift:

Compared with its base (Qwen-3-VL-8B-Thinking), Jan-v2-VL shows no degradation on standard text-only and vision tasks—and is slightly better on several—while delivering stronger long-horizon execution on the Illusion of Diminishing Returns benchmark.



Jan-v2-VL is optimized for direct integration with the Jan App. Simply select the model from the Jan App interface for immediate access to its full capabilities.
Using vLLM:
vllm serve Menlo/Jan-v2-VL-high \
--host 0.0.0.0 \
--port 1234 \
--enable-auto-tool-choice \
--tool-call-parser hermes \
--reasoning-parser qwen3
Using llama.cpp:
llama-server --model Jan-v2-VL-high-Q8_0.gguf \
--vision-model-path mmproj-Jan-v2-VL-high.gguf \
--host 0.0.0.0 \
--port 1234 \
--jinja \
--no-context-shift
For optimal performance in agentic and general tasks, we recommend the following inference parameters:
temperature: 1.0
top_p: 0.95
top_k: 20
repetition_penalty: 1.0
presence_penalty: 1.5
Updated Soon
<!--End Original Model Card-->
Help me test my AI-Powered Quantum Network Monitor Assistant with quantum-ready security checks:
The full Open Source Code for the Quantum Network Monitor Service available at my github repos ( repos with NetworkMonitor in the name) : Source Code Quantum Network Monitor. You will also find the code I use to quantize the models if you want to do it yourself GGUFModelBuilder
💬 How to test:
Choose an AI assistant type:
TurboLLM (GPT-4.1-mini)HugLLM (Hugginface Open-source models)TestLLM (Experimental CPU-only)I’m pushing the limits of small open-source models for AI network monitoring, specifically:
🟡 TestLLM – Current experimental model (llama.cpp on 2 CPU threads on huggingface docker space):
🟢 TurboLLM – Uses gpt-4.1-mini :
🔵 HugLLM – Latest Open-source models:
"Give me info on my websites SSL certificate""Check if my server is using quantum safe encyption for communication""Run a comprehensive security audit on my server"I fund the servers used to create these model files, run the Quantum Network Monitor service, and pay for inference from Novita and OpenAI—all out of my own pocket. All the code behind the model creation and the Quantum Network Monitor project is open source. Feel free to use whatever you find helpful.
If you appreciate the work, please consider buying me a coffee ☕. Your support helps cover service costs and allows me to raise token limits for everyone.
I'm also open to job opportunities or sponsorship.
Thank you! 😊