Hy3 vs Seed 2.1 Pro: Specs & Benchmark Comparison
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| Characteristic | Hy3 | Seed 2.1 Pro |
|---|---|---|
| Company | Tencent | ByteDance |
| Release Date | July 6, 2026 | June 24, 2026 |
| Parameters | 295B | — |
| Multimodal | No | Yes |
| Average Score | 0.6 | 0.6 |
| Benchmarks | ||
| APEX-Agents | 0.3 | 0.3 |
| WildClawBench | 0.5 | 0.6 |
| MathArena Apex | 0.4 | 0.3 |
| FrontierScience Research | 0.2 | 0.3 |
| HorizonMath | 0.1 | 0.0 |
| SuperChem | 0.5 | 0.6 |
| DeepSWE | 0.3 | 0.3 |
| MCP Atlas | 0.8 | 0.8 |
| Toolathlon | 0.5 | 0.5 |
| BrowseComp | 0.8 | 0.9 |
| NL2Repo | 0.5 | 0.5 |
| Terminal-Bench 2.1 | 0.7 | 0.7 |
| SWE-Bench Pro | 0.6 | 0.6 |
| FrontierScience Olympiad | 0.7 | 0.8 |
Visual Benchmark Comparison
Hy3
Seed 2.1 Pro
APEX-Agents0.3 vs 0.3
0.3
0.3
WildClawBench0.5 vs 0.6
0.5
0.6
MathArena Apex0.4 vs 0.3
0.4
0.3
FrontierScience Research0.2 vs 0.3
0.2
0.3
HorizonMath0.1 vs 0.0
0.1
0.0
SuperChem0.5 vs 0.6
0.5
0.6
DeepSWE0.3 vs 0.3
0.3
0.3
MCP Atlas0.8 vs 0.8
0.8
0.8
Toolathlon0.5 vs 0.5
0.5
0.5
BrowseComp0.8 vs 0.9
0.8
0.9
NL2Repo0.5 vs 0.5
0.5
0.5
Terminal-Bench 2.10.7 vs 0.7
0.7
0.7
SWE-Bench Pro0.6 vs 0.6
0.6
0.6
FrontierScience Olympiad0.7 vs 0.8
0.7
0.8
Verdict
Both models show equal results — the choice depends on your specific use case.
Overall Performance
Both models show comparable average scores: Hy3 — 0.6, Seed 2.1 Pro — 0.6.
Recency
Both models were released around the same time: 7/6/2026 and 6/24/2026.
More About These Models
Related Comparisons
Frequently Asked Questions
Which is better for coding — Hy3 or Seed 2.1 Pro?
Direct comparison on the SWE-Bench benchmark is not available. We recommend reviewing other metrics on the comparison page.
Which model is cheaper — Hy3 or Seed 2.1 Pro?
API pricing data is available on the individual model pages.
Which has a larger context window — Hy3 or Seed 2.1 Pro?
Context window data is available on the individual model pages.
The Hy3 and Seed 2.1 Pro comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Hy3 or Seed 2.1 Pro page. See also the complete list of AI model comparisons.