Model comparison
Seed 2.0 Pro vs Yi-Lightning
Seed 2.0 Pro is the stronger model overall, scoring 43.2 to 37.1 on the Noometry Index.
Last verified . 17 shared benchmarks.
ByteDance SeedSummary
- They share 17 benchmarks with published results for both. Seed 2.0 Pro scores higher in 7 categories and Yi-Lightning in 1 category; 8 gaps are clear of the uncertainty.
- The widest gap is in coding, where Seed 2.0 Pro leads 43.5 to 27.4.
Side by side
| Seed 2.0 Pro | Yi-Lightning | |
|---|---|---|
| Provider | ByteDance Seed | 01.AI |
| Noometry Index | 43.2 | 37.1 |
| Released | 2026-02-14 | 2024-12-02 |
| Weights | Proprietary | Proprietary |
| Context window | 256K | — |
| Max output | 128K | — |
| Input $ / M tokens | $0.50 | — |
| Output $ / M tokens | $3 | — |
| Results tracked | 20 | 18 |
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Category by category
Coding Seed 2.0 Pro leads
Seed 2.0 Pro: 43.5 (#86), Yi-Lightning: 27.4 (#320)
| Benchmark | Seed 2.0 Pro | Yi-Lightning |
|---|---|---|
| LMArena Coding | 1472 | 1312 |
| Aider Polyglot | — | 12.9% |
Reasoning Yi-Lightning leads
Seed 2.0 Pro: 24.1 (#165), Yi-Lightning: 25.9 (#139)
| Benchmark | Seed 2.0 Pro | Yi-Lightning |
|---|---|---|
| LMArena Hard Prompts | 1453 | 1302 |
| NYT Connections (extended) | 28.4% | — |
| Thematic Generalization | 57.1% | — |
Math Seed 2.0 Pro leads
Seed 2.0 Pro: 39.3 (#108), Yi-Lightning: 36.2 (#172)
| Benchmark | Seed 2.0 Pro | Yi-Lightning |
|---|---|---|
| LMArena Math | 1439 | 1300 |
Knowledge Seed 2.0 Pro leads
Seed 2.0 Pro: 40.2 (#122), Yi-Lightning: 35.4 (#185)
| Benchmark | Seed 2.0 Pro | Yi-Lightning |
|---|---|---|
| LMArena Expert | 1440 | 1286 |
Multimodal Not comparable
Seed 2.0 Pro: 41.5 (#35), Yi-Lightning: —
| Benchmark | Seed 2.0 Pro | Yi-Lightning |
|---|---|---|
| LMArena Vision | 1274 | — |
Multilingual Seed 2.0 Pro leads
Seed 2.0 Pro: 54.5 (#39), Yi-Lightning: 42.2 (#196)
| Benchmark | Seed 2.0 Pro | Yi-Lightning |
|---|---|---|
| LMArena Non-English | 1441 | 1269 |
| LMArena Chinese | 1489 | 1320 |
| LMArena French | 1471 | 1305 |
| LMArena German | 1442 | 1267 |
| LMArena Japanese | 1408 | 1228 |
| LMArena Korean | 1411 | 1192 |
| LMArena Russian | 1449 | 1255 |
| LMArena Spanish | 1460 | 1315 |
Instruction Following Seed 2.0 Pro leads
Seed 2.0 Pro: 74.5 (#91), Yi-Lightning: 67.4 (#196)
| Benchmark | Seed 2.0 Pro | Yi-Lightning |
|---|---|---|
| LMArena Instruction Following | 1414 | 1278 |
Long Context Seed 2.0 Pro leads
Seed 2.0 Pro: 43.6 (#90), Yi-Lightning: 39.4 (#181)
| Benchmark | Seed 2.0 Pro | Yi-Lightning |
|---|---|---|
| LMArena Longer Query | 1428 | 1297 |
Writing & Preference Seed 2.0 Pro leads
Seed 2.0 Pro: 62.9 (#69), Yi-Lightning: 50.2 (#184)
| Benchmark | Seed 2.0 Pro | Yi-Lightning |
|---|---|---|
| LMArena Text | 1448 | 1302 |
| LMArena Creative Writing | 1406 | 1280 |
| LMArena Multi-Turn | 1441 | 1311 |
Frequently asked questions
Is Seed 2.0 Pro better than Yi-Lightning?
Seed 2.0 Pro is the stronger model overall, scoring 43.2 to 37.1 on the Noometry Index.
Is Seed 2.0 Pro or Yi-Lightning better for coding?
Seed 2.0 Pro scores higher on coding benchmarks: 43.5 versus 27.4 in the Noometry coding category.
How many benchmarks do Seed 2.0 Pro and Yi-Lightning share?
17 benchmarks have published results for both models. Seed 2.0 Pro has 20 scored results on Noometry and Yi-Lightning has 18.