@jakevin7: Recently I've been reading about GLM 5.2 and found some interesting things to share. GLM-5.2 uses MTP (Multi-Token Prediction) to accelerate inference: a lightweight "draft model" quickly predicts multiple tokens, then the main model verifies them all at once; if accepted, it skips the decoding steps.

X AI KOLs Following Models

Summary

GLM-5.2 adopts MTP (Multi-Token Prediction) technology to accelerate inference and fixes a training-inference discrepancy in GLM-5.1's MTP that caused KV cache mixing issues.

Recently I've been reading about GLM 5.2 and found some interesting things to share. GLM-5.2 uses MTP (Multi-Token Prediction) to accelerate inference: a lightweight "draft model" quickly predicts multiple tokens, then the main model verifies them all at once; if accepted, it skips the decoding steps. The documentation mentions an interesting bug fix: GLM-5.1's MTP had a "training-inference discrepancy" starting from step 2+, which caused the KV cache to mix results from the target model and the MTP model, leading to a lower acceptance rate. GLM-5.2 solves this with IndexShare + KVShare.
Original Article
View Cached Full Text

Cached at: 06/20/26, 08:22 PM

Recently, I’ve been reading the documentation for GLM 5.2 and found some interesting things to share.

GLM-5.2 uses MTP (Multi-Token Prediction) to accelerate inference: a lightweight “draft model” first predicts multiple tokens quickly, then the large model verifies them all at once; if accepted, it skips the decoding steps.

There’s an interesting bug fix in the documentation: GLM-5.1’s MTP had a “training-inference discrepancy” starting from the 2nd step, causing the KV cache to mix results from the target model and the MTP model, resulting in a low acceptance rate. GLM-5.2 resolves this through IndexShare + KVShare.

Similar Articles

@karminski3: Local deployment of GLM-5.2 with vLLM finally gets fast! Good news for local GLM-5.2 deployment! As we know, GLM-5.2 now comes with a built-in MTP head for speculative decoding. However, this only works with the bf16 original precision GLM-5.2, which...

X AI KOLs Timeline

Community efforts, including a hybrid quantization approach by dnhkng, have enabled vLLM and SGLang to support GLM-5.2 with MTP heads, boosting local inference speed from 2 token/s to over 43 token/s on dual GH200 hardware. The challenge involved managing DSA-based MTP and quantization compatibility.

Multi-Token Prediction Done Right

Hugging Face Daily Papers

Soft-MTP 提出一种 KL 梯度恢复技巧,去除多token预测训练中的噪声残差梯度,在无额外开销下改进困惑度、投机解码与推理能力。