Model comparison
GPT-5 Pro vs Muse Spark
Muse Spark is the stronger model overall, scoring 50.6 to 46.4 on the Noometry Index.
Last verified . 3 shared benchmarks.
MetaSummary
- They share 3 benchmarks with published results for both. GPT-5 Pro scores higher in 2 categories and Muse Spark in 2 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Muse Spark leads 65.7 to 56.7.
- The biggest single-benchmark swing is Humanity's Last Exam: 31.6% for GPT-5 Pro and 40.6% for Muse Spark.
Side by side
| GPT-5 Pro | Muse Spark | |
|---|---|---|
| Provider | OpenAI | Meta |
| Noometry Index | 46.4 | 50.6 |
| Released | 2025-10-06 | 2026-04-08 |
| Weights | Proprietary | Proprietary |
| Context window | 400K | — |
| Max output | 272K | — |
| Input $ / M tokens | $15 | — |
| Output $ / M tokens | $120 | — |
| Results tracked | 12 | 27 |
Sponsored placements are available on pages like this one. Advertise on Noometry
Category by category
Coding Muse Spark leads
GPT-5 Pro: 44.0 (#80), Muse Spark: 46.2 (#69)
| Benchmark | GPT-5 Pro | Muse Spark |
|---|---|---|
| SciCode | — | 51.5% |
| WeirdML | 60.4% | — |
| LMArena Coding | — | 1481 |
| AlgoTune | 1.31 | — |
Reasoning GPT-5 Pro leads
GPT-5 Pro: 38.9 (#62), Muse Spark: 35.9 (#67)
| Benchmark | GPT-5 Pro | Muse Spark |
|---|---|---|
| Epoch Capabilities Index | 150.28 | 152.04 |
| ARC-AGI-2 | 18.3% | — |
| SimpleBench | 61.6% | — |
| Kagi LLM Benchmark | 76.8% | — |
| ARC-AGI-1 | 70.2% | — |
| CritPt | — | 11.3% |
| EnigmaEval | 18.8% | — |
| LMArena Hard Prompts | — | 1474 |
Math Too close to call
GPT-5 Pro: 48.5 (#63), Muse Spark: 47.8 (#66)
| Benchmark | GPT-5 Pro | Muse Spark |
|---|---|---|
| FrontierMath Tier 4 (v1) | 14.6% | 14.6% |
| FrontierMath (Tiers 1-3) | 55.8% | — |
| FrontierMath Tier 4 | 19.5% | — |
| OTIS Mock AIME 2024-2025 | — | 88.9% |
| ProofBench | — | 17% |
| LMArena Math | — | 1455 |
| FrontierMath (Feb 2025 set) | — | 39% |
Knowledge Muse Spark leads
GPT-5 Pro: 56.7 (#42), Muse Spark: 65.7 (#13)
| Benchmark | GPT-5 Pro | Muse Spark |
|---|---|---|
| Humanity's Last Exam | 31.6% | 40.6% |
| GPQA Diamond | — | 89.8% |
| LMArena Expert | — | 1457 |
Multimodal Not comparable
GPT-5 Pro: —, Muse Spark: 43.4 (#24)
| Benchmark | GPT-5 Pro | Muse Spark |
|---|---|---|
| LMArena Vision | — | 1306 |
| LMArena Document | — | 1444 |
Multilingual Not comparable
GPT-5 Pro: —, Muse Spark: 56.1 (#24)
| Benchmark | GPT-5 Pro | Muse Spark |
|---|---|---|
| LMArena Non-English | — | 1464 |
| LMArena Chinese | — | 1509 |
| LMArena French | — | 1497 |
| LMArena German | — | 1497 |
| LMArena Korean | — | 1459 |
| LMArena Russian | — | 1466 |
| LMArena Spanish | — | 1472 |
Instruction Following Not comparable
GPT-5 Pro: —, Muse Spark: 75.9 (#51)
| Benchmark | GPT-5 Pro | Muse Spark |
|---|---|---|
| LMArena Instruction Following | — | 1442 |
Long Context Not comparable
GPT-5 Pro: —, Muse Spark: 44.4 (#69)
| Benchmark | GPT-5 Pro | Muse Spark |
|---|---|---|
| LMArena Longer Query | — | 1451 |
Writing & Preference Not comparable
GPT-5 Pro: —, Muse Spark: 66.0 (#39)
| Benchmark | GPT-5 Pro | Muse Spark |
|---|---|---|
| LMArena Text | — | 1474 |
| LMArena Creative Writing | — | 1459 |
| LMArena Multi-Turn | — | 1477 |
Frequently asked questions
Is GPT-5 Pro better than Muse Spark?
Muse Spark is the stronger model overall, scoring 50.6 to 46.4 on the Noometry Index.
Is GPT-5 Pro or Muse Spark better for coding?
Muse Spark scores higher on coding benchmarks: 46.2 versus 44.0 in the Noometry coding category.
How many benchmarks do GPT-5 Pro and Muse Spark share?
3 benchmarks have published results for both models. GPT-5 Pro has 12 scored results on Noometry and Muse Spark has 27.