Model comparison
GPT-5 vs Muse Spark
GPT-5 and Muse Spark score almost the same on the Noometry Index (50.9 vs 50.6), so choose on price, context window or the category you care about most.
Last verified . 26 shared benchmarks.
MetaSummary
- They share 26 benchmarks with published results for both. GPT-5 scores higher in 5 categories and Muse Spark in 4 categories; 9 gaps are clear of the uncertainty.
- The widest gap is in long context, where GPT-5 leads 69.5 to 44.4.
- The biggest single-benchmark swing is Humanity's Last Exam: 25.3% for GPT-5 and 40.6% for Muse Spark.
Side by side
| GPT-5 | Muse Spark | |
|---|---|---|
| Provider | OpenAI | Meta |
| Noometry Index | 50.9 | 50.6 |
| Released | 2025-08-07 | 2026-04-08 |
| Weights | Proprietary | Proprietary |
| Context window | 400K | — |
| Max output | 128K | — |
| Input $ / M tokens | $1.25 | — |
| Output $ / M tokens | $10 | — |
| Results tracked | 69 | 27 |
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Category by category
Coding GPT-5 leads
GPT-5: 50.3 (#47), Muse Spark: 46.2 (#69)
| Benchmark | GPT-5 | Muse Spark |
|---|---|---|
| SciCode | 42.9% | 51.5% |
| LMArena Coding | 1436 | 1481 |
| SWE-bench Verified | 73.6% | — |
| SWE-bench Verified (bash only) | 65% | — |
| Aider Polyglot | 88% | — |
| LMArena WebDev | 1418 | — |
| GSO | 6.9% | — |
| WeirdML | 60.7% | — |
| ALE-Bench | 1,162 | — |
| AlgoTune | 1.67 | — |
Agentic & Tool Use Not comparable
GPT-5: 33.1 (#56), Muse Spark: —
| Benchmark | GPT-5 | Muse Spark |
|---|---|---|
| Terminal-Bench | 49.6% | — |
| GDPval | 34.8% | — |
| Remote Labor Index | 1.7% | — |
| DeepResearch Bench | 49.6% | — |
| BALROG | 32.8% | — |
| LMArena Search | 1133 | — |
| METR Time Horizons | 69.6% | — |
Reasoning GPT-5 leads
GPT-5: 38.3 (#64), Muse Spark: 35.9 (#67)
| Benchmark | GPT-5 | Muse Spark |
|---|---|---|
| CritPt | 12.6% | 11.3% |
| LMArena Hard Prompts | 1416 | 1474 |
| Epoch Capabilities Index | 150 | 152.04 |
| ARC-AGI-2 | 9.9% | — |
| SimpleBench | 56.7% | — |
| Kagi LLM Benchmark | 72.7% | — |
| ARC-AGI-1 | 65.7% | — |
| Chess Puzzles | 37% | — |
| EnigmaEval | 10.5% | — |
| EBR-Bench | 12.7% | — |
| Mystery Game Puzzles | 23% | — |
| DTBench | 90.7% | — |
| LMCA | 40% | — |
| ForecastBench | 61.4 | — |
Math GPT-5 leads
GPT-5: 55.0 (#44), Muse Spark: 47.8 (#66)
| Benchmark | GPT-5 | Muse Spark |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 91.4% | 88.9% |
| ProofBench | 18% | 17% |
| LMArena Math | 1407 | 1455 |
| FrontierMath (Feb 2025 set) | 32.4% | 39% |
| FrontierMath Tier 4 (v1) | 12.5% | 14.6% |
| FrontierMath (Tiers 1-3) | 55.4% | — |
| FrontierMath Tier 4 | 22% | — |
| Omni-MATH | 64.7% | — |
| MATH Level 5 | 98.1% | — |
Knowledge Muse Spark leads
GPT-5: 56.6 (#43), Muse Spark: 65.7 (#13)
| Benchmark | GPT-5 | Muse Spark |
|---|---|---|
| GPQA Diamond | 86.2% | 89.8% |
| Humanity's Last Exam | 25.3% | 40.6% |
| LMArena Expert | 1419 | 1457 |
| SimpleQA Verified | 50.1% | — |
| MMLU-Pro | 86.3% | — |
| Confabulations | 10.3% | — |
| Vectara Hallucination Rate | 14.7% | — |
| GPQA (HELM) | 79.2% | — |
Multimodal GPT-5 leads
GPT-5: 46.8 (#13), Muse Spark: 43.4 (#24)
| Benchmark | GPT-5 | Muse Spark |
|---|---|---|
| LMArena Vision | 1232 | 1306 |
| GeoBench | 81% | — |
| VPCT | 66% | — |
| LMArena Document | — | 1444 |
Multilingual Muse Spark leads
GPT-5: 51.4 (#110), Muse Spark: 56.1 (#24)
| Benchmark | GPT-5 | Muse Spark |
|---|---|---|
| LMArena Non-English | 1397 | 1464 |
| LMArena Chinese | 1422 | 1509 |
| LMArena French | 1410 | 1497 |
| LMArena German | 1416 | 1497 |
| LMArena Korean | 1360 | 1459 |
| LMArena Russian | 1406 | 1466 |
| LMArena Spanish | 1399 | 1472 |
| LMArena Japanese | 1409 | — |
Instruction Following Muse Spark leads
GPT-5: 73.8 (#113), Muse Spark: 75.9 (#51)
| Benchmark | GPT-5 | Muse Spark |
|---|---|---|
| LMArena Instruction Following | 1388 | 1442 |
| IFEval | 87.5% | — |
Long Context GPT-5 leads
GPT-5: 69.5 (#2), Muse Spark: 44.4 (#69)
| Benchmark | GPT-5 | Muse Spark |
|---|---|---|
| LMArena Longer Query | 1399 | 1451 |
| Fiction.LiveBench | 97.2% | — |
Writing & Preference Muse Spark leads
GPT-5: 63.4 (#65), Muse Spark: 66.0 (#39)
| Benchmark | GPT-5 | Muse Spark |
|---|---|---|
| LMArena Text | 1406 | 1474 |
| LMArena Creative Writing | 1365 | 1459 |
| LMArena Multi-Turn | 1426 | 1477 |
| Short-Story Creative Writing | 86% | — |
| EQ-Bench Creative Writing | 1627 | — |
| WildBench | 85.7% | — |
Frequently asked questions
Is GPT-5 better than Muse Spark?
GPT-5 and Muse Spark score almost the same on the Noometry Index (50.9 vs 50.6), so choose on price, context window or the category you care about most.
Is GPT-5 or Muse Spark better for coding?
GPT-5 scores higher on coding benchmarks: 50.3 versus 46.2 in the Noometry coding category.
How many benchmarks do GPT-5 and Muse Spark share?
26 benchmarks have published results for both models. GPT-5 has 69 scored results on Noometry and Muse Spark has 27.