Noometry

Model comparison

Muse Spark 1.2 vs Solar Pro 3

Muse Spark 1.2 has enough public results to be ranked (#48); Solar Pro 3 does not yet, so treat this comparison as directional.

Last verified . 2 shared benchmarks.

Muse Spark 1.2 Meta

50.3

Rank #48 Confirmed

Solar Pro 3 Upstage

33.9

Unranked Sparse

Summary

  • They share 2 benchmarks with published results for both. Muse Spark 1.2 scores higher in 2 categories and Solar Pro 3 in 0 categories; 2 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Muse Spark 1.2 leads 51.3 to 22.4.
  • The biggest single-benchmark swing is SciCode: 56.4% for Muse Spark 1.2 and 24.7% for Solar Pro 3.
  • Solar Pro 3 is cheaper at $0.25 / $0.25 per million input/output tokens, against $1.25 / $4.25 for Muse Spark 1.2.
  • Muse Spark 1.2 accepts more context: 1.05M tokens versus 131K.

Side by side

Muse Spark 1.2Solar Pro 3
ProviderMetaUpstage
Noometry Index50.333.9
Released2026-08-052026-01
WeightsProprietaryProprietary
Context window1.05M131K
Max output131K8K
Input $ / M tokens$1.25$0.25
Output $ / M tokens$4.25$0.25
Results tracked312

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Category by category

Coding Muse Spark 1.2 leads

Muse Spark 1.2: 49.2 (#51), Solar Pro 3: 34.8

BenchmarkMuse Spark 1.2Solar Pro 3
SciCode56.4%24.7%
DeepSWE54.9%—
LMArena WebDev1533—
FrontierSWE12%—
WeirdML60.3%—
LMArena Coding1495—

Agentic & Tool Use Not comparable

Muse Spark 1.2: 29.4 (#87), Solar Pro 3: —

BenchmarkMuse Spark 1.2Solar Pro 3
APEX-Agents36.4%—
GDP.pdf16%—

Reasoning Muse Spark 1.2 leads

Muse Spark 1.2: 51.3 (#34), Solar Pro 3: 22.4

BenchmarkMuse Spark 1.2Solar Pro 3
CritPt17.7%0%
SimpleBench74.5%—
NYT Connections (extended)79.2%—
LMArena Hard Prompts1486—
DTBench94.7%—
LMCA48.4%—
Epoch Capabilities Index154.87—

Math Not comparable

Muse Spark 1.2: 46.4 (#70), Solar Pro 3: —

BenchmarkMuse Spark 1.2Solar Pro 3
ProofBench43%—
LMArena Math1471—

Knowledge Not comparable

Muse Spark 1.2: 54.1 (#53), Solar Pro 3: —

BenchmarkMuse Spark 1.2Solar Pro 3
SimpleQA Verified60.3%—
LMArena Expert1480—

Multimodal Not comparable

Muse Spark 1.2: 43.4 (#25), Solar Pro 3: —

BenchmarkMuse Spark 1.2Solar Pro 3
LMArena Vision1305—

Multilingual Not comparable

Muse Spark 1.2: 57.1 (#11), Solar Pro 3: —

BenchmarkMuse Spark 1.2Solar Pro 3
LMArena Non-English1478—
LMArena Chinese1511—
LMArena French1513—
LMArena Russian1487—
LMArena Spanish1498—

Instruction Following Not comparable

Muse Spark 1.2: 76.7 (#36), Solar Pro 3: —

BenchmarkMuse Spark 1.2Solar Pro 3
LMArena Instruction Following1461—

Long Context Not comparable

Muse Spark 1.2: 45.2 (#48), Solar Pro 3: —

BenchmarkMuse Spark 1.2Solar Pro 3
LMArena Longer Query1475—

Writing & Preference Not comparable

Muse Spark 1.2: 72.3 (#14), Solar Pro 3: —

BenchmarkMuse Spark 1.2Solar Pro 3
LMArena Text1482—
LMArena Creative Writing1449—
EQ-Bench Creative Writing1840—
LMArena Multi-Turn1494—

Frequently asked questions

Is Muse Spark 1.2 better than Solar Pro 3?

Muse Spark 1.2 has enough public results to be ranked (#48); Solar Pro 3 does not yet, so treat this comparison as directional.

Which is cheaper, Muse Spark 1.2 or Solar Pro 3?

Solar Pro 3 is cheaper. It lists at $0.25 per million input tokens and $0.25 per million output tokens; Muse Spark 1.2 lists at $1.25 and $4.25.

Is Muse Spark 1.2 or Solar Pro 3 better for coding?

Muse Spark 1.2 scores higher on coding benchmarks: 49.2 versus 34.8 in the Noometry coding category.

Which has the bigger context window?

Muse Spark 1.2 does, with 1.05M tokens against 131K.

How many benchmarks do Muse Spark 1.2 and Solar Pro 3 share?

2 benchmarks have published results for both models. Muse Spark 1.2 has 31 scored results on Noometry and Solar Pro 3 has 2.

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