Model Comparison

Hy3 vs Grok 4.5Which is better in 2026?

Grok 4.5 significantly outperforms across most benchmarks.

Verdict: Hy3 vs Grok 4.5 — which is better?

Hy3 (by Tencent) and Grok 4.5 (by xAI) 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.

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

Choose Hy3 if…

  • you need open weights you can self-host or fine-tune

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

Performance Benchmarks

Comparative analysis across standard metrics

4 benchmarks

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

Grok 4.5 significantly outperforms across most benchmarks.

Fri Jul 17 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).

Tencent
Hy3
Input- tokens
Output- tokens
xAI
Grok 4.5
Input500,000 tokens
Output- tokens
Fri Jul 17 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.

Hy3

Text
Images
Audio
Video

Grok 4.5

Text
Images
Audio
Video

License

Usage and distribution terms

Hy3 is licensed under Apache 2.0, while Grok 4.5 uses a proprietary license.

License differences may affect how you can use these models in commercial or open-source projects.

Hy3

Apache 2.0

Open weights

Grok 4.5

Proprietary

Closed source

Release Timeline

When each model was launched

Hy3 was released on 2026-07-06, while Grok 4.5 was released on 2026-07-08.

Grok 4.5 is 0 month newer than Hy3.

Hy3

Jul 6, 2026

1 weeks ago

Grok 4.5

Jul 8, 2026

1 weeks ago

2d 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→

Key Takeaways

Tencent
Has open weights
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%)

Detailed Comparison

Interactive Arena

Judge for yourself.

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

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

FAQ

Common questions about Hy3 vs Grok 4.5.

Which is better, Hy3 or Grok 4.5?

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

How does Hy3 compare to Grok 4.5 in benchmarks?

Hy3 scores DeepSearchQA: 91.0%, GPQA: 90.4%, IMO-AnswerBench: 90.0%, BrowseComp: 84.2%, MCP Atlas: 79.1%. 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%.

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

Hy3 supports an unknown number of tokens and Grok 4.5 supports 500K tokens. A larger context window lets you process longer documents, conversations, or codebases in a single request.

What are the main differences between Hy3 and Grok 4.5?

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

Who makes Hy3 and Grok 4.5?

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

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