Model comparison
Seed 2.0 Pro vs Muse Spark 1.1
Muse Spark 1.1 is the stronger model overall, scoring 49.9 to 43.2 on the Noometry Index. Seed 2.0 Pro costs 1.8× less per token, which makes it the better buy when Muse Spark 1.1's lead doesn't matter for your workload.
Last verified . 19 shared benchmarks.
ByteDance Seed
MetaSummary
- They share 19 benchmarks with published results for both. Seed 2.0 Pro scores higher in 0 categories and Muse Spark 1.1 in 9 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Muse Spark 1.1 leads 47.1 to 24.1.
- The biggest single-benchmark swing is NYT Connections (extended): 28.4% for Seed 2.0 Pro and 84.9% for Muse Spark 1.1.
- Seed 2.0 Pro is cheaper at $0.50 / $3 per million input/output tokens, against $1.25 / $4.25 for Muse Spark 1.1.
- Muse Spark 1.1 accepts more context: 1.05M tokens versus 256K.
Side by side
| Seed 2.0 Pro | Muse Spark 1.1 | |
|---|---|---|
| Provider | ByteDance Seed | Meta |
| Noometry Index | 43.2 | 49.9 |
| Released | 2026-02-14 | 2026-04-08 |
| Weights | Proprietary | Proprietary |
| Context window | 256K | 1.05M |
| Max output | 128K | 131K |
| Input $ / M tokens | $0.50 | $1.25 |
| Output $ / M tokens | $3 | $4.25 |
| Results tracked | 20 | 37 |
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Category by category
Coding Muse Spark 1.1 leads
Seed 2.0 Pro: 43.5 (#86), Muse Spark 1.1: 51.3 (#40)
| Benchmark | Seed 2.0 Pro | Muse Spark 1.1 |
|---|---|---|
| LMArena Coding | 1472 | 1498 |
| DeepSWE | — | 53.3% |
| LMArena WebDev | — | 1542 |
| SciCode | — | 58.8% |
Agentic & Tool Use Not comparable
Seed 2.0 Pro: —, Muse Spark 1.1: 30.8 (#73)
| Benchmark | Seed 2.0 Pro | Muse Spark 1.1 |
|---|---|---|
| APEX-Agents | — | 31.8% |
| τ²-bench Banking | — | 40.5% |
| GBAEval | — | 7.9% |
| GDP.pdf | — | 15% |
| Vending-Bench 2 | — | 6,520 |
Reasoning Muse Spark 1.1 leads
Seed 2.0 Pro: 24.1 (#165), Muse Spark 1.1: 47.1 (#44)
| Benchmark | Seed 2.0 Pro | Muse Spark 1.1 |
|---|---|---|
| NYT Connections (extended) | 28.4% | 84.9% |
| LMArena Hard Prompts | 1453 | 1486 |
| CritPt | — | 15.1% |
| Thematic Generalization | 57.1% | — |
| DTBench | — | 94.4% |
| LMCA | — | 49.9% |
| Surface Evolver Bench | — | 52.5% |
| Epoch Capabilities Index | — | 154.21 |
Math Muse Spark 1.1 leads
Seed 2.0 Pro: 39.3 (#108), Muse Spark 1.1: 45.5 (#76)
| Benchmark | Seed 2.0 Pro | Muse Spark 1.1 |
|---|---|---|
| LMArena Math | 1439 | 1483 |
| ProofBench | — | 39% |
Knowledge Muse Spark 1.1 leads
Seed 2.0 Pro: 40.2 (#122), Muse Spark 1.1: 53.1 (#59)
| Benchmark | Seed 2.0 Pro | Muse Spark 1.1 |
|---|---|---|
| LMArena Expert | 1440 | 1478 |
| SimpleQA Verified | — | 57.8% |
Multimodal Muse Spark 1.1 leads
Seed 2.0 Pro: 41.5 (#35), Muse Spark 1.1: 42.6 (#29)
| Benchmark | Seed 2.0 Pro | Muse Spark 1.1 |
|---|---|---|
| LMArena Vision | 1274 | 1293 |
| LMArena Document | — | 1465 |
Multilingual Muse Spark 1.1 leads
Seed 2.0 Pro: 54.5 (#39), Muse Spark 1.1: 56.7 (#17)
| Benchmark | Seed 2.0 Pro | Muse Spark 1.1 |
|---|---|---|
| LMArena Non-English | 1441 | 1472 |
| LMArena Chinese | 1489 | 1518 |
| LMArena French | 1471 | 1494 |
| LMArena German | 1442 | 1466 |
| LMArena Japanese | 1408 | 1451 |
| LMArena Korean | 1411 | 1458 |
| LMArena Russian | 1449 | 1483 |
| LMArena Spanish | 1460 | 1464 |
Instruction Following Muse Spark 1.1 leads
Seed 2.0 Pro: 74.5 (#91), Muse Spark 1.1: 76.5 (#39)
| Benchmark | Seed 2.0 Pro | Muse Spark 1.1 |
|---|---|---|
| LMArena Instruction Following | 1414 | 1457 |
Long Context Muse Spark 1.1 leads
Seed 2.0 Pro: 43.6 (#90), Muse Spark 1.1: 44.8 (#58)
| Benchmark | Seed 2.0 Pro | Muse Spark 1.1 |
|---|---|---|
| LMArena Longer Query | 1428 | 1462 |
Writing & Preference Muse Spark 1.1 leads
Seed 2.0 Pro: 62.9 (#69), Muse Spark 1.1: 73.4 (#11)
| Benchmark | Seed 2.0 Pro | Muse Spark 1.1 |
|---|---|---|
| LMArena Text | 1448 | 1479 |
| LMArena Creative Writing | 1406 | 1437 |
| LMArena Multi-Turn | 1441 | 1485 |
| EQ-Bench Creative Writing | — | 1927 |
| EQ-Bench 4 | — | 1260 |
Frequently asked questions
Is Seed 2.0 Pro better than Muse Spark 1.1?
Muse Spark 1.1 is the stronger model overall, scoring 49.9 to 43.2 on the Noometry Index. Seed 2.0 Pro costs 1.8× less per token, which makes it the better buy when Muse Spark 1.1's lead doesn't matter for your workload.
Which is cheaper, Seed 2.0 Pro or Muse Spark 1.1?
Seed 2.0 Pro is cheaper. It lists at $0.50 per million input tokens and $3 per million output tokens; Muse Spark 1.1 lists at $1.25 and $4.25.
Is Seed 2.0 Pro or Muse Spark 1.1 better for coding?
Muse Spark 1.1 scores higher on coding benchmarks: 51.3 versus 43.5 in the Noometry coding category.
Which has the bigger context window?
Muse Spark 1.1 does, with 1.05M tokens against 256K.
How many benchmarks do Seed 2.0 Pro and Muse Spark 1.1 share?
19 benchmarks have published results for both models. Seed 2.0 Pro has 20 scored results on Noometry and Muse Spark 1.1 has 37.