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GPT-5 nano vs Muse Spark
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| Attribute | GPT-5 nano | Muse Spark |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 141 | 153 |
| Coding | 25 | 76 |
| Math | 12 | 64 |
| Reasoning & Knowledge | 7 | 82 |
| Agentic & Tools | 9 | 63 |
| Specifications | ||
| Developer | OpenAI | Meta AI |
| Family | GPT | — |
| Released | Aug 7, 2025 | Apr 8, 2026 |
| Parameters | — | — |
| Availability | API access | API access |
| Context window | 400K | — |
| Price — $/M input | $0.05 | — |
| Price — $/M output | $0.40 | — |
| Inputs | text, image, file | — |
| Outputs | text | — |
| Benchmarks | ||
| AIME 2024/2025 | 81% | 89% |
| ARC-AGI | 21% | — |
| ARC-AGI-2 | 3% | — |
| FrontierMath | 8% | 39% |
| FrontierMath Tier 4 | 2% | 15% |
| GPQA Diamond | 69% | 90% |
| Humanity's Last Exam | 8% | 41% |
| LiveCodeBench | 79% | — |
| MATH Level 5 | 95% | — |
| MMLU-Pro | 78% | — |
| SciCode | 37% | 52% |
| SimpleQA Verified | 12% | 66% |
| Terminal-Bench | 22% | — |
| WeirdML | 38% | — |
| τ²-bench | 37% | 92% |
| WebDev Arena | — | 1513 |
Use-case scores are 0–100 percentile composites across each area’s benchmarks, ranked against every model from the past year. Highlighted cells lead each row. Open a model for the full picture.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.