Model Comparison

Hy3 vs Seed 2.0 LiteWhich is better in 2026?

Hy3 significantly outperforms across most benchmarks.

Verdict: Hy3 vs Seed 2.0 Lite — which is better?

Hy3 (by Tencent) and Seed 2.0 Lite (by ByteDance) 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 2 benchmarks (GPQA, SWE-Bench Verified), while Seed 2.0 Lite is better at 0 benchmarks. Hy3 significantly outperforms across most benchmarks.

Choose Hy3 if…

  • you want the strongest raw capability — it leads on 2 of 2 shared benchmarks
  • you want the most recent training data — it shipped Jul 2026
  • you need open weights you can self-host or fine-tune

Choose Seed 2.0 Lite if…

  • you are already invested in the ByteDance ecosystem

Performance Benchmarks

Comparative analysis across standard metrics

2 benchmarks

Hy3 outperforms in 2 benchmarks (GPQA, SWE-Bench Verified), while Seed 2.0 Lite is better at 0 benchmarks.

Hy3 significantly outperforms across most benchmarks.

Tue Jul 21 2026 • llm-stats.com

Arena Performance

Human preference votes

Input Capabilities

Supported data types and modalities

Seed 2.0 Lite supports multimodal inputs, whereas Hy3 does not.

Seed 2.0 Lite can handle both text and other forms of data like images, making it suitable for multimodal applications.

Hy3

Text
Images
Audio
Video

Seed 2.0 Lite

Text
Images
Audio
Video

License

Usage and distribution terms

Hy3 is licensed under Apache 2.0, while Seed 2.0 Lite 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

Seed 2.0 Lite

Proprietary

Closed source

Release Timeline

When each model was launched

Hy3 was released on 2026-07-06, while Seed 2.0 Lite was released on 2026-02-14.

Hy3 is 5 months newer than Seed 2.0 Lite.

Hy3

Jul 6, 2026

2 weeks ago

4mo newer
Seed 2.0 Lite

Feb 14, 2026

5 months ago

Knowledge Cutoff

When training data ends

Seed 2.0 Lite has a documented knowledge cutoff of 2024-01-01, while Hy3's cutoff date is not specified.

We can confirm Seed 2.0 Lite's training data extends to 2024-01-01, but cannot make a direct comparison without Hy3's cutoff date.

Hy3

—

Seed 2.0 Lite

Jan 2024

Outputs Comparison

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Key Takeaways

Tencent
Has open weights
Higher GPQA score (90.4% vs 85.1%)
Higher SWE-Bench Verified score (78.0% vs 73.5%)
ByteDance
Supports multimodal inputs

Detailed Comparison

Interactive Arena

Judge for yourself.

Run your own prompts against Hy3 and Seed 2.0 Lite side-by-side, then vote on the output you prefer.

Hy3
✓ Preferred
Seed 2.0 Lite
Open in Playground
AI Model Comparison Table
Feature
Tencent
Hy3
ByteDance
Seed 2.0 Lite

FAQ

Common questions about Hy3 vs Seed 2.0 Lite.

Which is better, Hy3 or Seed 2.0 Lite?

Hy3 significantly outperforms across most benchmarks. Hy3 is made by Tencent and Seed 2.0 Lite is made by ByteDance. The best choice depends on your use case — compare their benchmark scores, pricing, and capabilities above.

How does Hy3 compare to Seed 2.0 Lite in benchmarks?

Hy3 scores DeepSearchQA: 91.0%, GPQA: 90.4%, IMO-AnswerBench: 90.0%, BrowseComp: 84.2%, MCP Atlas: 79.1%. Seed 2.0 Lite scores AIME 2025: 93.0%, AIME 2026: 88.3%, GPQA: 85.1%, LiveCodeBench v6: 81.7%, SWE-Bench Verified: 73.5%.

What are the main differences between Hy3 and Seed 2.0 Lite?

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 Seed 2.0 Lite?

Hy3 is developed by Tencent and Seed 2.0 Lite is developed by ByteDance.

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