Hy4 preview vs o3
Hy4 preview leads the LLM Stats Score 51.5 to 31.3.
Tencent · OpenAI · Updated for 2026
Which is better?
Hy4 preview leads the overall LLM Stats Score 51.5 to 31.3, ranking #10 overall.
In the 1 individual benchmarks reported for both models, Hy4 preview wins 1; 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 Hy4 preview
- overall performance matters — it scores 51.5 and ranks #10 on LLM Stats
- your work emphasizes reasoning and coding — it leads those capability indexes
- you value its reported benchmark strengths — it wins 1 of 1 exact shared results
- you want the most recent training data — it shipped Aug 2026
- you need open weights you can self-host or fine-tune
Choose o3
- you want predictable pricing at $2.00/M input and $8.00/M output
At a glance
The differences that matter most.
Capability indexes
Additional strengths measured across groups of related public benchmarks
Individual benchmarks
32 reported for Hy4 preview · 22 for o3
Hy4 preview outperforms in 1 benchmarks (GPQA), while o3 is better at 0 benchmarks.
Hy4 preview significantly outperforms across most benchmarks.
Human preference
Blind head-to-head votes and playground preference scores
Context Window
Maximum input and output token capacity
Only o3 specifies input context (200,000 tokens). Only o3 specifies output context (100,000 tokens).
Input capabilities
Documented input modalities across available providers
o3 supports multimodal inputs, whereas Hy4 preview does not.
o3 can handle both text and other forms of data like images, making it suitable for multimodal applications.
Hy4 preview
o3
License
Usage and distribution terms
Hy4 preview is licensed under Apache 2.0, while o3 uses a proprietary license.
License differences may affect how you can use these models in commercial or open-source projects.
Apache 2.0
Open weights
Proprietary
Closed source
Release Timeline
When each model was launched
Hy4 preview was released on 2026-08-28, while o3 was released on 2025-04-16.
Hy4 preview is 17 months newer than o3.
Aug 28, 2026
3 days ago
1.4yr newerApr 16, 2025
1.4 years ago
Knowledge Cutoff
When training data ends
o3 has a documented knowledge cutoff of 2024-05-31, while Hy4 preview's cutoff date is not specified.
We can confirm o3's training data extends to 2024-05-31, but cannot make a direct comparison without Hy4 preview's cutoff date.
—
May 2024
Outputs Comparison
Judge for yourself.
Run your own prompts against Hy4 preview and o3 side-by-side, then vote on the output you prefer.
FAQ
Common questions about Hy4 preview vs o3.