Model Comparison
GPT-5.6 Terra vs Hy3Which is better in 2026?
GPT-5.6 Terra significantly outperforms across most benchmarks.
Verdict: GPT-5.6 Terra vs Hy3 — which is better?
GPT-5.6 Terra (by OpenAI) and Hy3 (by Tencent) are two of the AI models people compare most. Here is how they stack up on benchmarks, price and capabilities, and which one to pick in 2026.
GPT-5.6 Terra outperforms in 6 benchmarks (BrowseComp, DeepSWE, GPQA, SWE-Bench Pro, Terminal-Bench 2.1, Toolathlon), while Hy3 is better at 0 benchmarks. GPT-5.6 Terra significantly outperforms across most benchmarks.
Choose GPT-5.6 Terra if…
- you want the strongest raw capability — it leads on 6 of 6 shared benchmarks
- you want the most recent training data — it shipped Jul 2026
Choose Hy3 if…
- you need open weights you can self-host or fine-tune
Performance Benchmarks
Comparative analysis across standard metrics
GPT-5.6 Terra outperforms in 6 benchmarks (BrowseComp, DeepSWE, GPQA, SWE-Bench Pro, Terminal-Bench 2.1, Toolathlon), while Hy3 is better at 0 benchmarks.
GPT-5.6 Terra significantly outperforms across most benchmarks.
Arena Performance
Human preference votes
Context Window
Maximum input and output token capacity
Only GPT-5.6 Terra specifies input context (1,050,000 tokens). Only GPT-5.6 Terra specifies output context (128,000 tokens).
Input Capabilities
Supported data types and modalities
GPT-5.6 Terra supports multimodal inputs, whereas Hy3 does not.
GPT-5.6 Terra can handle both text and other forms of data like images, making it suitable for multimodal applications.
GPT-5.6 Terra
Hy3
License
Usage and distribution terms
GPT-5.6 Terra is licensed under a proprietary license, while Hy3 uses Apache 2.0.
License differences may affect how you can use these models in commercial or open-source projects.
Proprietary
Closed source
Apache 2.0
Open weights
Release Timeline
When each model was launched
GPT-5.6 Terra was released on 2026-07-09, while Hy3 was released on 2026-07-06.
GPT-5.6 Terra is 0 month newer than Hy3.
Jul 9, 2026
1 weeks ago
3d newerJul 6, 2026
1 weeks ago
Knowledge Cutoff
When training data ends
GPT-5.6 Terra has a documented knowledge cutoff of 2026-02-16, while Hy3's cutoff date is not specified.
We can confirm GPT-5.6 Terra's training data extends to 2026-02-16, but cannot make a direct comparison without Hy3's cutoff date.
Feb 2026
—
Outputs Comparison
Key Takeaways
Hy3
View detailsTencent
Detailed Comparison
Interactive Arena
Judge for yourself.
Run your own prompts against GPT-5.6 Terra and Hy3 side-by-side, then vote on the output you prefer.
| Feature | | |
|---|
FAQ
Common questions about GPT-5.6 Terra vs Hy3.