Tencent Hy3 vs GLM-5.2: Wins Everywhere Except Coding
When it comes to open-source agentic models, Tencent's Hy3 and Zhipu AI's GLM-5.2 are the two undisputed heavyweights right now. But which one should you actually use for your daily workflow? The data shows a very clear picture: Hy3 wins almost everywhere — except when it comes to raw coding.
Tencent's Blind Human Study Test
Relying solely on automated benchmarks can be tricky, which is why Tencent conducted a massive blind human evaluation. They brought in 270 domain experts who performed 312 head-to-head comparisons.
The experts evaluated the models across various complex tasks, grading them on a 4-point scale. The results were telling:
- Tencent Hy3 Score: 2.67 / 4
- GLM-5.1 Score: 2.51 / 4
In practical, everyday interactions and reasoning tasks evaluated by actual humans, Hy3 feels noticeably more capable and intuitive.
Where GLM-5.2 Dominates: Coding
Despite Hy3's superiority in general intelligence and reasoning, GLM-5.2 still holds the crown for developers. If your primary use case is autonomous coding, bug fixing, or terminal execution, Zhipu's model is still the one to beat.
| Benchmark | GLM-5.2 | Tencent Hy3 |
|---|---|---|
| SWE-bench Verified | 84.2% | 78.0% |
| Terminal-Bench | 81.0% | 71.7% |
An almost 10-point gap in Terminal-Bench is significant. When it comes to writing bash scripts, navigating directories autonomously, and resolving complex repository-wide issues (SWE-bench), GLM-5.2 is significantly more reliable.
Where Hy3 Dominates: Agentic Search
If GLM-5.2 is the coder, Hy3 is the researcher. Tencent specifically optimized Hy3 for deep agentic workflows, multi-step internet browsing, and long-context information retrieval.
- BrowseComp: Hy3 scores 84.2%.
- DeepSearchQA: Hy3 hits an incredible 91.0%.
These numbers don't just beat GLM-5.2; they make Hy3 highly competitive with frontier proprietary models like Claude Opus 4.8 and GPT-5.5. If you are building an AI agent that needs to trawl through financial reports, summarize 100-page PDFs, or navigate the web to answer obscure questions, Hy3 is the undisputed open-source king.
The Verdict
The choice between the two is surprisingly straightforward:
- Choose GLM-5.2 if you are building an autonomous software engineer (like Devin or AutoCoder) that relies heavily on bash execution and PR resolutions.
- Choose Tencent Hy3 for everything else — especially web-browsing agents, research assistants, and general-purpose chatbots.
Frequently Asked Questions
Which is better for coding: GLM-5.2 or Tencent Hy3?
GLM-5.2 is currently superior for pure coding tasks, scoring 84.2 on SWE-bench Verified compared to Hy3's 78.0. However, Hy3 outperforms GLM-5.2 in agentic search and complex tool-calling benchmarks.
Is Tencent Hy3 completely open-source?
Yes, Tencent Hy3 was released under the Apache 2.0 license, making its model weights fully open and available for commercial use and fine-tuning.
What is the context window size of Tencent Hy3?
Tencent Hy3 features a massive 256K token context window, making it excellent for analyzing large codebases or long documents in a single prompt.