Model comparison
Seed 2.0 Pro vs Hy3
Hy3 is the stronger model overall, scoring 44.2 to 43.2 on the Noometry Index.
Last verified . 18 shared benchmarks.
ByteDance Seed
TencentSummary
- They share 18 benchmarks with published results for both. Seed 2.0 Pro scores higher in 2 categories and Hy3 in 6 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in coding, where Hy3 leads 46.8 to 43.5.
- The biggest single-benchmark swing is NYT Connections (extended): 28.4% for Seed 2.0 Pro and 41.2% for Hy3.
- Hy3 is cheaper at $0.0825 / $0.33 per million input/output tokens, against $0.50 / $3 for Seed 2.0 Pro.
- Hy3 accepts more context: 262K tokens versus 256K.
- Hy3 has downloadable open weights; the other is API-only.
Side by side
| Seed 2.0 Pro | Hy3 | |
|---|---|---|
| Provider | ByteDance Seed | Tencent |
| Noometry Index | 43.2 | 44.2 |
| Released | 2026-02-14 | 2026-07-06 |
| Weights | Proprietary | Open |
| Context window | 256K | 262K |
| Max output | 128K | 128K |
| Input $ / M tokens | $0.50 | $0.0825 |
| Output $ / M tokens | $3 | $0.33 |
| Results tracked | 20 | 19 |
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Category by category
Coding Hy3 leads
Seed 2.0 Pro: 43.5 (#86), Hy3: 46.8 (#63)
| Benchmark | Seed 2.0 Pro | Hy3 |
|---|---|---|
| LMArena Coding | 1472 | 1464 |
| LMArena WebDev | — | 1508 |
Reasoning Hy3 leads
Seed 2.0 Pro: 24.1 (#165), Hy3: 26.1 (#136)
| Benchmark | Seed 2.0 Pro | Hy3 |
|---|---|---|
| NYT Connections (extended) | 28.4% | 41.2% |
| LMArena Hard Prompts | 1453 | 1447 |
| Thematic Generalization | 57.1% | — |
Math Too close to call
Seed 2.0 Pro: 39.3 (#108), Hy3: 40.1 (#93)
| Benchmark | Seed 2.0 Pro | Hy3 |
|---|---|---|
| LMArena Math | 1439 | 1475 |
Knowledge Too close to call
Seed 2.0 Pro: 40.2 (#122), Hy3: 40.8 (#114)
| Benchmark | Seed 2.0 Pro | Hy3 |
|---|---|---|
| LMArena Expert | 1440 | 1460 |
Multimodal Not comparable
Seed 2.0 Pro: 41.5 (#35), Hy3: —
| Benchmark | Seed 2.0 Pro | Hy3 |
|---|---|---|
| LMArena Vision | 1274 | — |
Multilingual Seed 2.0 Pro leads
Seed 2.0 Pro: 54.5 (#39), Hy3: 53.5 (#65)
| Benchmark | Seed 2.0 Pro | Hy3 |
|---|---|---|
| LMArena Non-English | 1441 | 1426 |
| LMArena Chinese | 1489 | 1493 |
| LMArena French | 1471 | 1461 |
| LMArena German | 1442 | 1439 |
| LMArena Japanese | 1408 | 1392 |
| LMArena Korean | 1411 | 1395 |
| LMArena Russian | 1449 | 1432 |
| LMArena Spanish | 1460 | 1456 |
Instruction Following Too close to call
Seed 2.0 Pro: 74.5 (#91), Hy3: 75.1 (#70)
| Benchmark | Seed 2.0 Pro | Hy3 |
|---|---|---|
| LMArena Instruction Following | 1414 | 1426 |
Long Context Too close to call
Seed 2.0 Pro: 43.6 (#90), Hy3: 44.1 (#75)
| Benchmark | Seed 2.0 Pro | Hy3 |
|---|---|---|
| LMArena Longer Query | 1428 | 1442 |
Writing & Preference Too close to call
Seed 2.0 Pro: 62.9 (#69), Hy3: 62.2 (#81)
| Benchmark | Seed 2.0 Pro | Hy3 |
|---|---|---|
| LMArena Text | 1448 | 1439 |
| LMArena Creative Writing | 1406 | 1402 |
| LMArena Multi-Turn | 1441 | 1436 |
Frequently asked questions
Is Seed 2.0 Pro better than Hy3?
Hy3 is the stronger model overall, scoring 44.2 to 43.2 on the Noometry Index.
Which is cheaper, Seed 2.0 Pro or Hy3?
Hy3 is cheaper. It lists at $0.0825 per million input tokens and $0.33 per million output tokens; Seed 2.0 Pro lists at $0.50 and $3.
Is Seed 2.0 Pro or Hy3 better for coding?
Hy3 scores higher on coding benchmarks: 46.8 versus 43.5 in the Noometry coding category.
Which has the bigger context window?
Hy3 does, with 262K tokens against 256K.
How many benchmarks do Seed 2.0 Pro and Hy3 share?
18 benchmarks have published results for both models. Seed 2.0 Pro has 20 scored results on Noometry and Hy3 has 19.