Model Comparison

GPT-5.5 vs Hy3Which is better in 2026?

GPT-5.5 significantly outperforms across most benchmarks.

Verdict: GPT-5.5 vs Hy3 — which is better?

GPT-5.5 (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-5.5 outperforms in 4 benchmarks (BrowseComp, GPQA, SWE-Bench Pro, Toolathlon), while Hy3 is better at 1 benchmark (MCP Atlas). GPT-5.5 significantly outperforms across most benchmarks.

Choose GPT-5.5 if…

  • you want the strongest raw capability — it leads on 4 of 5 shared benchmarks

Choose Hy3 if…

  • you want the most recent training data — it shipped Jul 2026
  • you need open weights you can self-host or fine-tune

Performance Benchmarks

Comparative analysis across standard metrics

5 benchmarks

GPT-5.5 outperforms in 4 benchmarks (BrowseComp, GPQA, SWE-Bench Pro, Toolathlon), while Hy3 is better at 1 benchmark (MCP Atlas).

GPT-5.5 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 GPT-5.5 specifies input context (1,050,000 tokens). Only GPT-5.5 specifies output context (128,000 tokens).

OpenAI
GPT-5.5
Input1,050,000 tokens
Output128,000 tokens
Tencent
Hy3
Input- tokens
Output- tokens
Fri Jul 17 2026 • llm-stats.com

Input Capabilities

Supported data types and modalities

GPT-5.5 supports multimodal inputs, whereas Hy3 does not.

GPT-5.5 can handle both text and other forms of data like images, making it suitable for multimodal applications.

GPT-5.5

Text
Images
Audio
Video

Hy3

Text
Images
Audio
Video

License

Usage and distribution terms

GPT-5.5 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.

GPT-5.5

Proprietary

Closed source

Hy3

Apache 2.0

Open weights

Release Timeline

When each model was launched

GPT-5.5 was released on 2026-04-23, while Hy3 was released on 2026-07-06.

Hy3 is 2 months newer than GPT-5.5.

GPT-5.5

Apr 23, 2026

2 months ago

Hy3

Jul 6, 2026

1 weeks ago

2mo newer

Knowledge Cutoff

When training data ends

GPT-5.5 has a documented knowledge cutoff of 2025-12-01, while Hy3's cutoff date is not specified.

We can confirm GPT-5.5's training data extends to 2025-12-01, but cannot make a direct comparison without Hy3's cutoff date.

GPT-5.5

Dec 2025

Hy3

—

Outputs Comparison

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Key Takeaways

OpenAI
Larger context window (1,050,000 tokens)
Supports multimodal inputs
Higher BrowseComp score (84.4% vs 84.2%)
Higher GPQA score (93.6% vs 90.4%)
Higher SWE-Bench Pro score (58.6% vs 57.9%)
Higher Toolathlon score (55.6% vs 48.5%)
Tencent
Has open weights
Higher MCP Atlas score (79.1% vs 75.3%)

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against GPT-5.5 and Hy3 side-by-side, then vote on the output you prefer.

GPT-5.5
✓ Preferred
Hy3
Open in Playground
AI Model Comparison Table
Feature
OpenAI
GPT-5.5
Tencent
Hy3

FAQ

Common questions about GPT-5.5 vs Hy3.

Which is better, GPT-5.5 or Hy3?

GPT-5.5 significantly outperforms across most benchmarks. GPT-5.5 is made by OpenAI and Hy3 is made by Tencent. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does GPT-5.5 compare to Hy3 in benchmarks?

GPT-5.5 scores Tau2 Telecom: 98.0%, ARC-AGI: 95.0%, GPQA: 93.6%, ARC-AGI v2: 85.0%, GDPval-MM: 84.9%. 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 GPT-5.5 and Hy3?

GPT-5.5 supports 1.1M 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 GPT-5.5 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 GPT-5.5 and Hy3?

GPT-5.5 is developed by OpenAI and Hy3 is developed by Tencent.

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