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GLM-5.3 vs Hy4 preview

GLM-5.3 and Hy4 preview are closely matched at 53.8 and 51.3 on the LLM Stats Score.

Zhipu AI · Tencent · Updated for 2026

Which is better?

GLM-5.3 and Hy4 preview are closely matched on the overall LLM Stats Score at 53.8 and 51.3.

In the 10 individual benchmarks reported for both models, GLM-5.3 wins 8; this is a narrower head-to-head signal than the composite indexes.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose GLM-5.3

  • you value its reported benchmark strengths — it wins 8 of 10 exact shared results

Choose Hy4 preview

  • you want the most recent training data — it shipped Aug 2026
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

GLM-5.3
Zhipu AI
Hy4 preview
Tencent
Core performance indexes
LLM Stats Score
53.8
#8
51.3
#13
Reasoning
53.1
#5
51.0
#10
Coding
43.4
#5
39.9
#11
Agents
39.9
#6
36.7
#13
Cost, coverage & limits
Benchmark wins
8 of 10
2 of 10
Input price
$1.40 / M
— / M
Output price
$4.40 / M
— / M
Context window
1,000,000
—

Capability indexes

Additional strengths measured across groups of related public benchmarks

1 shared
Index
GLM-5.3
Hy4 preview
Tool use
34.0#3
31.4#10
Conservative TrueSkill rating · higher is betterHow scores work

Individual benchmarks

17 reported for GLM-5.3 · 32 for Hy4 preview

10 shared

GLM-5.3 outperforms in 8 benchmarks (Agents' Last Exam, AutomationBench, CyberGym, GDPval-AA, PostTrainBench, Program Bench, SWE-Marathon, Terminal-Bench 2.1), while Hy4 preview is better at 2 benchmarks (NL2Repo, Toolathlon).

GLM-5.3 significantly outperforms across most benchmarks.

Thu Sep 03 2026 • llm-stats.com

Human preference

Blind head-to-head votes and playground preference scores

Model Size

Parameter count comparison

17.0B diff

Hy4 preview has 17.0B more parameters than GLM-5.3, making it 2.3% larger.

Zhipu AI
GLM-5.3
753.0Bparameters
Tencent
Hy4 preview
770.0Bparameters
753.0B
GLM-5.3
770.0B
Hy4 preview

Context Window

Maximum input and output token capacity

Only GLM-5.3 specifies input context (1,000,000 tokens). Only GLM-5.3 specifies output context (131,072 tokens).

Zhipu AI
GLM-5.3
Input1,000,000 tokens
Output131,072 tokens
Tencent
Hy4 preview
Input- tokens
Output- tokens
Thu Sep 03 2026 • llm-stats.com

Release Timeline

When each model was launched

GLM-5.3 was released on 2026-08-14, while Hy4 preview was released on 2026-08-28.

Hy4 preview is 0 month newer than GLM-5.3.

GLM-5.3

Aug 14, 2026

2 weeks ago

Hy4 preview

Aug 28, 2026

5 days ago

2w newer

Knowledge Cutoff

When training data ends

Neither model specifies a knowledge cutoff date.

Unable to compare the recency of their training data.

No cutoff dates available

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Judge for yourself.

Run your own prompts against GLM-5.3 and Hy4 preview side-by-side, then vote on the output you prefer.

GLM-5.3
✓ Preferred
Hy4 preview
Open in Playground

FAQ

Common questions about GLM-5.3 vs Hy4 preview.

Which is better, GLM-5.3 or Hy4 preview?

GLM-5.3 and Hy4 preview are closely matched on the LLM Stats Score at 53.8 and 51.3. GLM-5.3 is made by Zhipu AI and Hy4 preview is made by Tencent. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does GLM-5.3 compare to Hy4 preview in benchmarks?

GLM-5.3 scores Terminal-Bench 2.1: 88.2%, CyberGym: 84.5%, FrontierSWE: 78.1%, Toolathlon: 73.0%, DeepSWE 1.1: 66.9%. Hy4 preview scores GPQA: 92.3%, Terminal-Bench 2.1: 85.4%, WideSearch: 83.9%, MCP Atlas: 83.7%, SWE-bench Multilingual: 82.9%.

What are the context window sizes for GLM-5.3 and Hy4 preview?

GLM-5.3 supports 1.0M tokens and Hy4 preview supports an unknown number of tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between GLM-5.3 and Hy4 preview?

Key differences include LLM Stats Score (53.8 vs 51.3), licensing (Unknown vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes GLM-5.3 and Hy4 preview?

GLM-5.3 is developed by Zhipu AI and Hy4 preview is developed by Tencent.

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