> For the complete documentation index, see [llms.txt](https://unsloth.ai/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://unsloth.ai/docs/basics/inference-and-deployment/saving-to-gguf/speculative-decoding.md).
# Speculative Decoding
Speculative Decoding with llama-server, llama.cpp, vLLM and more for 2x faster inference
## :llama:Speculative Decoding in llama.cpp, llama-server
Speculative decoding in llama.cpp can be easily enabled via `llama-cli` and `llama-server` via the `--model-draft` argument. Note you must have a draft model, which generally is a smaller model, but it must have the same tokenizer
### Spec Decoding for GLM 4.7
```python
# !pip install huggingface_hub hf_transfer
import os
os.environ["HF_HUB_ENABLE_HF_TRANSFER"] = "0" # Can sometimes rate limit, so set to 0 to disable
from huggingface_hub import snapshot_download
snapshot_download(
repo_id = "unsloth/GLM-4.7-GGUF",
local_dir = "unsloth/GLM-4.7-GGUF",
allow_patterns = ["*UD-Q2_K_XL*"], # Dynamic 2bit Use "*UD-TQ1_0*" for Dynamic 1bit
)
snapshot_download(
repo_id = "unsloth/GLM-4.5-Air-GGUF",
local_dir = "unsloth/GLM-4.5-Air-GGUF",
allow_patterns = ["*UD-Q4_K_XL*"], # Dynamic 4bit. Use "*UD-TQ1_0*" for Dynamic 1bit
)
```
{% code overflow="wrap" %}
```bash
./llama.cpp/llama-cli \
--model unsloth/GLM-4.7-GGUF/UD-Q2_K_XL/GLM-4.7-UD-Q2_K_XL-00001-of-00003.gguf \
--threads -1 \
--fit on \
--prio 3 \
--temp 1.0 \
--top-p 0.95 \
--ctx-size 16384 \
--jinja
```
{% endcode %}
{% code overflow="wrap" %}
```bash
./llama.cpp/llama-cli \
--model unsloth/GLM-4.7-GGUF/UD-Q2_K_XL/GLM-4.7-UD-Q2_K_XL-00001-of-00003.gguf \
--model-draft unsloth/GLM-4.5-Air-GGUF/UD-Q4_K_XL/GLM-4.5-Air-UD-Q4_K_XL-00001-of-00002.gguf \
--threads -1 \
--fit on \
--prio 3 \
--temp 1.0 \
--top-p 0.95 \
--ctx-size 16384 \
--ctx-size-draft 16384 \
--jinja \
--device CUDA0 \
--device-draft CUDA0,CUDA1
```
{% endcode %}
{% code overflow="wrap" %}
```bash
./llama.cpp/llama-server \
--model unsloth/GLM-4.7-GGUF/UD-Q2_K_XL/GLM-4.7-UD-Q2_K_XL-00001-of-00003.gguf \
--alias "unsloth/GLM-4.7" \
--threads -1 \
--fit on \
--prio 3 \
--temp 1.0 \
--top-p 0.95 \
--ctx-size 16384 \
--port 8001 \
--jinja
```
{% endcode %}
---
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