Noometry

Model comparison

GPT-5 Pro vs Muse Spark 1.1

Muse Spark 1.1 is the stronger model overall, scoring 49.9 to 46.4 on the Noometry Index.

Last verified . 1 shared benchmarks.

GPT-5 Pro OpenAI

46.4

Rank #64 Confirmed

Muse Spark 1.1 Meta

49.9

Rank #51 Confirmed

Summary

  • They share 1 benchmark with published results for both. GPT-5 Pro scores higher in 2 categories and Muse Spark 1.1 in 2 categories; 4 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Muse Spark 1.1 leads 47.1 to 38.9.
  • Muse Spark 1.1 is cheaper at $1.25 / $4.25 per million input/output tokens, against $15 / $120 for GPT-5 Pro.
  • Muse Spark 1.1 accepts more context: 1.05M tokens versus 400K.

Side by side

GPT-5 ProMuse Spark 1.1
ProviderOpenAIMeta
Noometry Index46.449.9
Released2025-10-062026-04-08
WeightsProprietaryProprietary
Context window400K1.05M
Max output272K131K
Input $ / M tokens$15$1.25
Output $ / M tokens$120$4.25
Results tracked1237

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Category by category

Coding Muse Spark 1.1 leads

GPT-5 Pro: 44.0 (#80), Muse Spark 1.1: 51.3 (#40)

BenchmarkGPT-5 ProMuse Spark 1.1
DeepSWE—53.3%
LMArena WebDev—1542
SciCode—58.8%
WeirdML60.4%—
LMArena Coding—1498
AlgoTune1.31—

Agentic & Tool Use Not comparable

GPT-5 Pro: —, Muse Spark 1.1: 30.8 (#73)

BenchmarkGPT-5 ProMuse 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

GPT-5 Pro: 38.9 (#62), Muse Spark 1.1: 47.1 (#44)

BenchmarkGPT-5 ProMuse Spark 1.1
Epoch Capabilities Index150.28154.21
ARC-AGI-218.3%—
SimpleBench61.6%—
Kagi LLM Benchmark76.8%—
NYT Connections (extended)—84.9%
ARC-AGI-170.2%—
CritPt—15.1%
EnigmaEval18.8%—
LMArena Hard Prompts—1486
DTBench—94.4%
LMCA—49.9%
Surface Evolver Bench—52.5%

Math GPT-5 Pro leads

GPT-5 Pro: 48.5 (#63), Muse Spark 1.1: 45.5 (#76)

BenchmarkGPT-5 ProMuse Spark 1.1
FrontierMath (Tiers 1-3)55.8%—
FrontierMath Tier 419.5%—
ProofBench—39%
LMArena Math—1483
FrontierMath Tier 4 (v1)14.6%—

Knowledge GPT-5 Pro leads

GPT-5 Pro: 56.7 (#42), Muse Spark 1.1: 53.1 (#59)

BenchmarkGPT-5 ProMuse Spark 1.1
Humanity's Last Exam31.6%—
SimpleQA Verified—57.8%
LMArena Expert—1478

Multimodal Not comparable

GPT-5 Pro: —, Muse Spark 1.1: 42.6 (#29)

BenchmarkGPT-5 ProMuse Spark 1.1
LMArena Vision—1293
LMArena Document—1465

Multilingual Not comparable

GPT-5 Pro: —, Muse Spark 1.1: 56.7 (#17)

BenchmarkGPT-5 ProMuse Spark 1.1
LMArena Non-English—1472
LMArena Chinese—1518
LMArena French—1494
LMArena German—1466
LMArena Japanese—1451
LMArena Korean—1458
LMArena Russian—1483
LMArena Spanish—1464

Instruction Following Not comparable

GPT-5 Pro: —, Muse Spark 1.1: 76.5 (#39)

BenchmarkGPT-5 ProMuse Spark 1.1
LMArena Instruction Following—1457

Long Context Not comparable

GPT-5 Pro: —, Muse Spark 1.1: 44.8 (#58)

BenchmarkGPT-5 ProMuse Spark 1.1
LMArena Longer Query—1462

Writing & Preference Not comparable

GPT-5 Pro: —, Muse Spark 1.1: 73.4 (#11)

BenchmarkGPT-5 ProMuse Spark 1.1
LMArena Text—1479
LMArena Creative Writing—1437
EQ-Bench Creative Writing—1927
EQ-Bench 4—1260
LMArena Multi-Turn—1485

Frequently asked questions

Is GPT-5 Pro better than Muse Spark 1.1?

Muse Spark 1.1 is the stronger model overall, scoring 49.9 to 46.4 on the Noometry Index.

Which is cheaper, GPT-5 Pro or Muse Spark 1.1?

Muse Spark 1.1 is cheaper. It lists at $1.25 per million input tokens and $4.25 per million output tokens; GPT-5 Pro lists at $15 and $120.

Is GPT-5 Pro or Muse Spark 1.1 better for coding?

Muse Spark 1.1 scores higher on coding benchmarks: 51.3 versus 44.0 in the Noometry coding category.

Which has the bigger context window?

Muse Spark 1.1 does, with 1.05M tokens against 400K.

How many benchmarks do GPT-5 Pro and Muse Spark 1.1 share?

1 benchmark has published results for both models. GPT-5 Pro has 12 scored results on Noometry and Muse Spark 1.1 has 37.

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