Model comparison
Mercury 2 vs Muse Spark 1.1
Muse Spark 1.1 is the stronger model overall, scoring 49.9 to 38.8 on the Noometry Index. Mercury 2 costs 5.3× less per token, which makes it the better buy when Muse Spark 1.1's lead doesn't matter for your workload.
Last verified . 14 shared benchmarks.
MetaSummary
- They share 14 benchmarks with published results for both. Mercury 2 scores higher in 0 categories and Muse Spark 1.1 in 7 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Muse Spark 1.1 leads 45.9 to 23.0.
- The biggest single-benchmark swing is SciCode: 38.7% for Mercury 2 and 58.8% for Muse Spark 1.1.
- Mercury 2 is cheaper at $0.25 / $0.75 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 128K.
Side by side
| Mercury 2 | Muse Spark 1.1 | |
|---|---|---|
| Provider | Inception | Meta |
| Noometry Index | 38.8 | 49.9 |
| Released | 2026-02-20 | 2026-04-08 |
| Weights | Proprietary | Proprietary |
| Context window | 128K | 1.05M |
| Max output | 50K | 131K |
| Input $ / M tokens | $0.25 | $1.25 |
| Output $ / M tokens | $0.75 | $4.25 |
| Results tracked | 17 | 36 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Muse Spark 1.1 leads
Mercury 2: 33.2 (#250), Muse Spark 1.1: 50.8 (#38)
| Benchmark | Mercury 2 | Muse Spark 1.1 |
|---|---|---|
| LMArena WebDev | 1170 | 1542 |
| SciCode | 38.7% | 58.8% |
| LMArena Coding | 1391 | 1497 |
| DeepSWE | — | 53.3% |
| WeirdML | 43.2% | — |
| ALE-Bench | 785.58 | — |
Agentic & Tool Use Not comparable
Mercury 2: —, Muse Spark 1.1: 33.9 (#45)
| Benchmark | Mercury 2 | Muse Spark 1.1 |
|---|---|---|
| τ²-bench Banking | — | 40.5% |
| GBAEval | — | 7.9% |
| GDP.pdf | — | 15% |
| Vending-Bench 2 | — | 6,520 |
Reasoning Muse Spark 1.1 leads
Mercury 2: 23.0 (#170), Muse Spark 1.1: 45.9 (#41)
| Benchmark | Mercury 2 | Muse Spark 1.1 |
|---|---|---|
| CritPt | 0.8% | 15.1% |
| LMArena Hard Prompts | 1362 | 1486 |
| NYT Connections (extended) | — | 84.9% |
| DTBench | — | 94.4% |
| LMCA | — | 49.9% |
| Surface Evolver Bench | — | 52.5% |
| Epoch Capabilities Index | — | 154.32 |
Math Not comparable
Mercury 2: —, Muse Spark 1.1: 44.0 (#67)
| Benchmark | Mercury 2 | Muse Spark 1.1 |
|---|---|---|
| ProofBench | — | 39% |
| LMArena Math | — | 1477 |
Knowledge Muse Spark 1.1 leads
Mercury 2: 35.6 (#170), Muse Spark 1.1: 52.8 (#55)
| Benchmark | Mercury 2 | Muse Spark 1.1 |
|---|---|---|
| LMArena Expert | 1358 | 1480 |
| SimpleQA Verified | — | 57.8% |
| Vectara Hallucination Rate | 12.3% | — |
Multimodal Not comparable
Mercury 2: —, Muse Spark 1.1: 41.9 (#28)
| Benchmark | Mercury 2 | Muse Spark 1.1 |
|---|---|---|
| LMArena Vision | — | 1292 |
| LMArena Document | — | 1465 |
Multilingual Muse Spark 1.1 leads
Mercury 2: 46.8 (#153), Muse Spark 1.1: 56.8 (#16)
| Benchmark | Mercury 2 | Muse Spark 1.1 |
|---|---|---|
| LMArena Non-English | 1331 | 1471 |
| LMArena Chinese | 1416 | 1518 |
| LMArena Russian | 1303 | 1482 |
| LMArena French | — | 1494 |
| LMArena German | — | 1466 |
| LMArena Japanese | — | 1445 |
| LMArena Korean | — | 1459 |
| LMArena Spanish | — | 1471 |
Instruction Following Muse Spark 1.1 leads
Mercury 2: 70.4 (#161), Muse Spark 1.1: 76.8 (#36)
| Benchmark | Mercury 2 | Muse Spark 1.1 |
|---|---|---|
| LMArena Instruction Following | 1328 | 1457 |
Long Context Muse Spark 1.1 leads
Mercury 2: 40.4 (#149), Muse Spark 1.1: 44.8 (#55)
| Benchmark | Mercury 2 | Muse Spark 1.1 |
|---|---|---|
| LMArena Longer Query | 1329 | 1463 |
Writing & Preference Muse Spark 1.1 leads
Mercury 2: 54.0 (#151), Muse Spark 1.1: 73.6 (#11)
| Benchmark | Mercury 2 | Muse Spark 1.1 |
|---|---|---|
| LMArena Text | 1355 | 1479 |
| LMArena Creative Writing | 1289 | 1440 |
| LMArena Multi-Turn | 1358 | 1484 |
| EQ-Bench Creative Writing | — | 1927 |
| EQ-Bench 4 | — | 1260 |
Frequently asked questions
Is Mercury 2 better than Muse Spark 1.1?
Muse Spark 1.1 is the stronger model overall, scoring 49.9 to 38.8 on the Noometry Index. Mercury 2 costs 5.3× 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, Mercury 2 or Muse Spark 1.1?
Mercury 2 is cheaper. It lists at $0.25 per million input tokens and $0.75 per million output tokens; Muse Spark 1.1 lists at $1.25 and $4.25.
Is Mercury 2 or Muse Spark 1.1 better for coding?
Muse Spark 1.1 scores higher on coding benchmarks: 50.8 versus 33.2 in the Noometry coding category.
Which has the bigger context window?
Muse Spark 1.1 does, with 1.05M tokens against 128K.
How many benchmarks do Mercury 2 and Muse Spark 1.1 share?
14 benchmarks have published results for both models. Mercury 2 has 17 scored results on Noometry and Muse Spark 1.1 has 36.