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Qwen2.5 7B

Qwen2.5 7B, self-quantized to GGUF by Atomic Chat. Built straight from Qwen's original weights with a per-tensor importance matrix, so this is not a repack of somebody else's files. Runs fully offline.

Highlights

  • 7.6B parameters: the weights this repo quantizes.
  • Context length: 32,768 tokens (32K), as published by Qwen.
  • 28 layers: Dense decoder, hybrid sliding-window (131072) and global attention.
  • Full imatrix ladder: every quant is calibrated with an importance matrix.
  • Multilingual support: for over 29 languages, including Chinese, English, French, Spanish, Portuguese, German, Italian, Russian, Japanese, Korean, Vietnamese, Thai, Arabic, and more.

These GGUFs are self-quantized from the original weights, not a repack. The importance matrix keeps low-bit quants closer to the full-precision model.

Always pass --jinja so the Qwen2.5 7B chat template is applied. Without it the model can emit malformed turns.

Model Overview

Property Value
Base model Qwen/Qwen2.5-7B-Instruct
Parameters 7.6B
Layers 28
Sliding window 131072 tokens
Context length 32,768 tokens (32K)
Vocabulary 152,064
Modalities Text
Architecture Dense decoder, hybrid sliding-window (131072) and global attention, 28 attention heads over 4 KV heads, Qwen2ForCausalLM
This repo GGUF quants (imatrix). Quants: Q4_K_M, UD-Q4_K_XL, Q5_K_M, Q6_K, Q8_0

Choosing a quant

Quant Size Notes
Q4_K_M 4.7 GB Recommended default. Best balance of size, speed and quality.
UD-Q4_K_XL 5.1 GB Dynamic. Embeddings and output kept at Q8_0 for higher quality at a Q4 footprint.
Q5_K_M 5.4 GB Higher quality, low loss.
Q6_K 6.3 GB Near lossless, noticeably lighter than Q8_0.
Q8_0 8.1 GB Effectively lossless, reference quality.

Pick the largest file that fits your (V)RAM with room for context. Q4_K_M or UD-Q4_K_XL is the sweet spot for most setups; Q6_K or Q8_0 for maximum fidelity.

Get started

Run Qwen2.5 7B locally with:

  • Atomic Chat: the easiest path. Open the app, search AtomicChat/Qwen2.5-7B-Instruct-GGUF, pick a quant, hit Use this model.
  • llama.cpp: llama-server -hf AtomicChat/Qwen2.5-7B-Instruct-GGUF:Q4_K_M --jinja -c 8192
  • Ollama: ollama run hf.co/AtomicChat/Qwen2.5-7B-Instruct-GGUF:Q4_K_M
  • LM Studio / Jan: search the repo id, download any quant.

Best practices

Parameter Value
temperature 0.7
top_p 0.8
top_k 20
repetition_penalty 1.05

Qwen's recommended sampling configuration for Qwen/Qwen2.5-7B-Instruct.

Run in llama.cpp

git clone https://github.com/ggml-org/llama.cpp
cmake llama.cpp -B llama.cpp/build -DBUILD_SHARED_LIBS=OFF -DGGML_CUDA=ON
cmake --build llama.cpp/build --config Release -j --target llama-cli llama-server
./llama.cpp/build/bin/llama-server \
    -hf AtomicChat/Qwen2.5-7B-Instruct-GGUF:Q4_K_M \
    --jinja -ngl 99 -c 8192 -fa on

How these were made

  1. Download Qwen/Qwen2.5-7B-Instruct (original weights).
  2. Convert to f16 GGUF with llama.cpp.
  3. Build an importance matrix over our calibration corpus.
  4. Quantize the ladder with --imatrix.
  5. UD-Q4_K_XL additionally pins the token-embedding and output tensors to Q8_0.

License

Original model by Qwen, released under the Apache 2.0 license. Full terms: Apache 2.0. Quantized by Atomic Chat.

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