Model comparison
Mercury vs Muse Spark 1.2
Muse Spark 1.2 is the stronger model overall, scoring 50.3 to 37.6 on the Noometry Index.
Last verified . 8 shared benchmarks.
MetaSummary
- They share 8 benchmarks with published results for both. Mercury scores higher in 0 categories and Muse Spark 1.2 in 6 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Muse Spark 1.2 leads 51.3 to 17.5.
Side by side
| Mercury | Muse Spark 1.2 | |
|---|---|---|
| Provider | Inception | Meta |
| Noometry Index | 37.6 | 50.3 |
| Released | — | 2026-08-05 |
| Weights | Proprietary | Proprietary |
| Context window | — | 1.05M |
| Max output | — | 131K |
| Input $ / M tokens | — | $1.25 |
| Output $ / M tokens | — | $4.25 |
| Results tracked | 9 | 31 |
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Category by category
Coding Muse Spark 1.2 leads
Mercury: 38.7 (#170), Muse Spark 1.2: 49.2 (#51)
| Benchmark | Mercury | Muse Spark 1.2 |
|---|---|---|
| LMArena Coding | 1322 | 1495 |
| DeepSWE | — | 54.9% |
| LMArena WebDev | — | 1533 |
| FrontierSWE | — | 12% |
| SciCode | — | 56.4% |
| WeirdML | — | 60.3% |
Agentic & Tool Use Not comparable
Mercury: —, Muse Spark 1.2: 29.4 (#87)
| Benchmark | Mercury | Muse Spark 1.2 |
|---|---|---|
| APEX-Agents | — | 36.4% |
| GDP.pdf | — | 16% |
Reasoning Muse Spark 1.2 leads
Mercury: 17.5 (#293), Muse Spark 1.2: 51.3 (#34)
| Benchmark | Mercury | Muse Spark 1.2 |
|---|---|---|
| LMArena Hard Prompts | 1285 | 1486 |
| SimpleBench | — | 74.5% |
| Kagi LLM Benchmark | 21.6% | — |
| NYT Connections (extended) | — | 79.2% |
| CritPt | — | 17.7% |
| DTBench | — | 94.7% |
| LMCA | — | 48.4% |
| Epoch Capabilities Index | — | 154.87 |
Math Not comparable
Mercury: —, Muse Spark 1.2: 46.4 (#70)
| Benchmark | Mercury | Muse Spark 1.2 |
|---|---|---|
| ProofBench | — | 43% |
| LMArena Math | — | 1471 |
Knowledge Not comparable
Mercury: —, Muse Spark 1.2: 54.1 (#53)
| Benchmark | Mercury | Muse Spark 1.2 |
|---|---|---|
| SimpleQA Verified | — | 60.3% |
| LMArena Expert | — | 1480 |
Multimodal Not comparable
Mercury: —, Muse Spark 1.2: 43.4 (#25)
| Benchmark | Mercury | Muse Spark 1.2 |
|---|---|---|
| LMArena Vision | — | 1305 |
Multilingual Muse Spark 1.2 leads
Mercury: 41.6 (#206), Muse Spark 1.2: 57.1 (#11)
| Benchmark | Mercury | Muse Spark 1.2 |
|---|---|---|
| LMArena Non-English | 1260 | 1478 |
| LMArena Chinese | — | 1511 |
| LMArena French | — | 1513 |
| LMArena Russian | — | 1487 |
| LMArena Spanish | — | 1498 |
Instruction Following Muse Spark 1.2 leads
Mercury: 65.2 (#224), Muse Spark 1.2: 76.7 (#36)
| Benchmark | Mercury | Muse Spark 1.2 |
|---|---|---|
| LMArena Instruction Following | 1239 | 1461 |
Long Context Muse Spark 1.2 leads
Mercury: 38.4 (#198), Muse Spark 1.2: 45.2 (#48)
| Benchmark | Mercury | Muse Spark 1.2 |
|---|---|---|
| LMArena Longer Query | 1266 | 1475 |
Writing & Preference Muse Spark 1.2 leads
Mercury: 46.2 (#221), Muse Spark 1.2: 72.3 (#14)
| Benchmark | Mercury | Muse Spark 1.2 |
|---|---|---|
| LMArena Text | 1282 | 1482 |
| LMArena Creative Writing | 1191 | 1449 |
| LMArena Multi-Turn | 1282 | 1494 |
| EQ-Bench Creative Writing | — | 1840 |
Frequently asked questions
Is Mercury better than Muse Spark 1.2?
Muse Spark 1.2 is the stronger model overall, scoring 50.3 to 37.6 on the Noometry Index.
Is Mercury or Muse Spark 1.2 better for coding?
Muse Spark 1.2 scores higher on coding benchmarks: 49.2 versus 38.7 in the Noometry coding category.
How many benchmarks do Mercury and Muse Spark 1.2 share?
8 benchmarks have published results for both models. Mercury has 9 scored results on Noometry and Muse Spark 1.2 has 31.