Model Comparison

Grok 4.5 vs Hy3Which is better in 2026?

Grok 4.5 significantly outperforms across most benchmarks.

Verdict: Grok 4.5 vs Hy3 — which is better?

Grok 4.5 (by xAI) 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.

Grok 4.5 outperforms in 4 benchmarks (DeepSWE, GPQA, SWE-Bench Pro, Terminal-Bench 2.1), while Hy3 is better at 0 benchmarks. Grok 4.5 significantly outperforms across most benchmarks.

Choose Grok 4.5 if…

  • you want the strongest raw capability — it leads on 4 of 4 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

4 benchmarks

Grok 4.5 outperforms in 4 benchmarks (DeepSWE, GPQA, SWE-Bench Pro, Terminal-Bench 2.1), while Hy3 is better at 0 benchmarks.

Grok 4.5 significantly outperforms across most benchmarks.

Sat Jul 18 2026 • llm-stats.com

Arena Performance

Human preference votes

Context Window

Maximum input and output token capacity

Only Grok 4.5 specifies input context (500,000 tokens).

xAI
Grok 4.5
Input500,000 tokens
Output- tokens
Tencent
Hy3
Input- tokens
Output- tokens
Sat Jul 18 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

Grok 4.5 supports multimodal inputs, whereas Hy3 does not.

Grok 4.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

Grok 4.5

Text
Images
Audio
Video

Hy3

Text
Images
Audio
Video

License

Usage and distribution terms

Grok 4.5 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.

Grok 4.5

Proprietary

Closed source

Hy3

Apache 2.0

Open weights

Release Timeline

When each model was launched

Grok 4.5 was released on 2026-07-16, while Hy3 was released on 2026-07-06.

Grok 4.5 is 0 month newer than Hy3.

Grok 4.5

Jul 16, 2026

2 days ago

1w newer
Hy3

Jul 6, 2026

1 weeks ago

Knowledge Cutoff

When training data ends

Grok 4.5 has a documented knowledge cutoff of 2026-02-01, while Hy3's cutoff date is not specified.

We can confirm Grok 4.5's training data extends to 2026-02-01, but cannot make a direct comparison without Hy3's cutoff date.

Grok 4.5

Feb 2026

Hy3

—

Outputs Comparison

Notice missing or incorrect data?Start an Issue discussion→

Key Takeaways

xAI
Larger context window (500,000 tokens)
Supports multimodal inputs
Higher DeepSWE score (53.0% vs 28.0%)
Higher GPQA score (93.0% vs 90.4%)
Higher SWE-Bench Pro score (64.7% vs 57.9%)
Higher Terminal-Bench 2.1 score (83.3% vs 71.7%)
Tencent
Has open weights

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Grok 4.5 and Hy3 side-by-side, then vote on the output you prefer.

Grok 4.5
✓ Preferred
Hy3
Open in Playground
AI Model Comparison Table
Feature
xAI
Grok 4.5
Tencent
Hy3

FAQ

Common questions about Grok 4.5 vs Hy3.

Which is better, Grok 4.5 or Hy3?

Grok 4.5 significantly outperforms across most benchmarks. Grok 4.5 is made by xAI and Hy3 is made by Tencent. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Grok 4.5 compare to Hy3 in benchmarks?

Grok 4.5 scores GPQA: 93.0%, Terminal-Bench 2.1: 83.3%, Artificial Analysis Coding Agent Index v1.1: 76.0%, SWE-Bench Pro: 64.7%, AA-Omniscience Index: 63.0%. Hy3 scores DeepSearchQA: 91.0%, GPQA: 90.4%, IMO-AnswerBench: 90.0%, BrowseComp: 84.2%, MCP Atlas: 79.1%.

What are the context window sizes for Grok 4.5 and Hy3?

Grok 4.5 supports 500K tokens and Hy3 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 Grok 4.5 and Hy3?

Key differences include multimodal support (yes vs no), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Grok 4.5 and Hy3?

Grok 4.5 is developed by xAI and Hy3 is developed by Tencent.

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