Model comparison
Seed 2.0 Pro vs Mercury
Seed 2.0 Pro is the stronger model overall, scoring 43.2 to 37.6 on the Noometry Index.
Last verified . 8 shared benchmarks.
ByteDance SeedSummary
- They share 8 benchmarks with published results for both. Seed 2.0 Pro scores higher in 6 categories and Mercury in 0 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Seed 2.0 Pro leads 62.9 to 46.2.
Side by side
| Seed 2.0 Pro | Mercury | |
|---|---|---|
| Provider | ByteDance Seed | Inception |
| Noometry Index | 43.2 | 37.6 |
| Released | 2026-02-14 | — |
| Weights | Proprietary | Proprietary |
| Context window | 256K | — |
| Max output | 128K | — |
| Input $ / M tokens | $0.50 | — |
| Output $ / M tokens | $3 | — |
| Results tracked | 20 | 9 |
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Category by category
Coding Seed 2.0 Pro leads
Seed 2.0 Pro: 43.5 (#86), Mercury: 38.7 (#170)
| Benchmark | Seed 2.0 Pro | Mercury |
|---|---|---|
| LMArena Coding | 1472 | 1322 |
Reasoning Seed 2.0 Pro leads
Seed 2.0 Pro: 24.1 (#165), Mercury: 17.5 (#293)
| Benchmark | Seed 2.0 Pro | Mercury |
|---|---|---|
| LMArena Hard Prompts | 1453 | 1285 |
| Kagi LLM Benchmark | — | 21.6% |
| NYT Connections (extended) | 28.4% | — |
| Thematic Generalization | 57.1% | — |
Math Not comparable
Seed 2.0 Pro: 39.3 (#108), Mercury: —
| Benchmark | Seed 2.0 Pro | Mercury |
|---|---|---|
| LMArena Math | 1439 | — |
Knowledge Not comparable
Seed 2.0 Pro: 40.2 (#122), Mercury: —
| Benchmark | Seed 2.0 Pro | Mercury |
|---|---|---|
| LMArena Expert | 1440 | — |
Multimodal Not comparable
Seed 2.0 Pro: 41.5 (#35), Mercury: —
| Benchmark | Seed 2.0 Pro | Mercury |
|---|---|---|
| LMArena Vision | 1274 | — |
Multilingual Seed 2.0 Pro leads
Seed 2.0 Pro: 54.5 (#39), Mercury: 41.6 (#206)
| Benchmark | Seed 2.0 Pro | Mercury |
|---|---|---|
| LMArena Non-English | 1441 | 1260 |
| LMArena Chinese | 1489 | — |
| LMArena French | 1471 | — |
| LMArena German | 1442 | — |
| LMArena Japanese | 1408 | — |
| LMArena Korean | 1411 | — |
| LMArena Russian | 1449 | — |
| LMArena Spanish | 1460 | — |
Instruction Following Seed 2.0 Pro leads
Seed 2.0 Pro: 74.5 (#91), Mercury: 65.2 (#224)
| Benchmark | Seed 2.0 Pro | Mercury |
|---|---|---|
| LMArena Instruction Following | 1414 | 1239 |
Long Context Seed 2.0 Pro leads
Seed 2.0 Pro: 43.6 (#90), Mercury: 38.4 (#198)
| Benchmark | Seed 2.0 Pro | Mercury |
|---|---|---|
| LMArena Longer Query | 1428 | 1266 |
Writing & Preference Seed 2.0 Pro leads
Seed 2.0 Pro: 62.9 (#69), Mercury: 46.2 (#221)
| Benchmark | Seed 2.0 Pro | Mercury |
|---|---|---|
| LMArena Text | 1448 | 1282 |
| LMArena Creative Writing | 1406 | 1191 |
| LMArena Multi-Turn | 1441 | 1282 |
Frequently asked questions
Is Seed 2.0 Pro better than Mercury?
Seed 2.0 Pro is the stronger model overall, scoring 43.2 to 37.6 on the Noometry Index.
Is Seed 2.0 Pro or Mercury better for coding?
Seed 2.0 Pro scores higher on coding benchmarks: 43.5 versus 38.7 in the Noometry coding category.
How many benchmarks do Seed 2.0 Pro and Mercury share?
8 benchmarks have published results for both models. Seed 2.0 Pro has 20 scored results on Noometry and Mercury has 9.