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Grok-1.5V vs Hy4 preview

Hy4 preview leads the LLM Stats Score 51.5 to -0.6.

xAI · Tencent · Updated for 2026

Which is better?

Hy4 preview leads the overall LLM Stats Score 51.5 to -0.6, ranking #10 overall.

Based on current LLM Stats indexes, shared benchmarks, pricing, and model metadata for 2026.

Choose Grok-1.5V

  • you are already invested in the xAI ecosystem

Choose Hy4 preview

  • overall performance matters — it scores 51.5 and ranks #10 on LLM Stats
  • your work emphasizes reasoning — it leads those capability indexes
  • you want the most recent training data — it shipped Aug 2026
  • you need open weights you can self-host or fine-tune

At a glance

The differences that matter most.

Grok-1.5V
xAI
Hy4 preview
Tencent
Core performance indexes
LLM Stats Score
-0.6
#315
51.5
#10
Reasoning
0.1
#302
51.2
#8
Cost, coverage & limits
Benchmark wins
—
—
Input price
— / M
— / M
Output price
— / M
— / M
Context window
—
—

Individual benchmarks

7 reported for Grok-1.5V · 32 for Hy4 preview

No common benchmarks found

Grok-1.5V and Hy4 previewdon't have any common benchmark datasets to compare. They may have been evaluated on different testing suites.

Human preference

Blind head-to-head votes and playground preference scores

Input capabilities

Documented input modalities across available providers

Grok-1.5V supports multimodal inputs, whereas Hy4 preview does not.

Grok-1.5V can handle both text and other forms of data like images, making it suitable for multimodal applications.

Grok-1.5V

Text
Images
Audio
Video

Hy4 preview

Text
Images
Audio
Video

License

Usage and distribution terms

Grok-1.5V is licensed under a proprietary license, while Hy4 preview uses Apache 2.0.

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

Grok-1.5V

Proprietary

Closed source

Hy4 preview

Apache 2.0

Open weights

Release Timeline

When each model was launched

Grok-1.5V was released on 2024-04-12, while Hy4 preview was released on 2026-08-28.

Hy4 preview is 29 months newer than Grok-1.5V.

Grok-1.5V

Apr 12, 2024

2.4 years ago

Hy4 preview

Aug 28, 2026

3 days ago

2.4yr 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→

Judge for yourself.

Run your own prompts against Grok-1.5V and Hy4 preview side-by-side, then vote on the output you prefer.

Grok-1.5V
✓ Preferred
Hy4 preview
Open in Playground

FAQ

Common questions about Grok-1.5V vs Hy4 preview.

Which is better, Grok-1.5V or Hy4 preview?

Hy4 preview leads the LLM Stats Score 51.5 to -0.6. Grok-1.5V is made by xAI and Hy4 preview is made by Tencent. The best choice depends on your use case — compare their capability indexes, individual benchmarks, pricing, and limits above.

How does Grok-1.5V compare to Hy4 preview in benchmarks?

Grok-1.5V scores AI2D: 88.3%, DocVQA: 85.6%, TextVQA: 78.1%, ChartQA: 76.1%, RealWorldQA: 68.7%. Hy4 preview scores GPQA: 92.3%, Terminal-Bench 2.1: 85.4%, WideSearch: 83.9%, MCP Atlas: 83.7%, SWE-bench Multilingual: 82.9%.

What are the main differences between Grok-1.5V and Hy4 preview?

Key differences include LLM Stats Score (-0.6 vs 51.5), multimodal support (yes vs no), licensing (Proprietary vs Apache 2.0). See the full comparison above for benchmark-by-benchmark results.

Who makes Grok-1.5V and Hy4 preview?

Grok-1.5V is developed by xAI and Hy4 preview is developed by Tencent.

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