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GPT-5.4 Pro vs Muse Spark
GPT-5.4 Pro (OpenAI) and Muse Spark (Meta AI) compared on benchmarks, pricing, context window, and use-case rankings.
- GPT-5.4 Pro leads on overall intelligence (ECI 158 vs 154).
| Attribute | GPT-5.4 Pro | Muse Spark |
|---|---|---|
| Scores | ||
| Intelligence (ECI) | 158 | 154 |
| Coding | — | 79 |
| Math | 97 | 66 |
| Reasoning & Knowledge | 82 | 84 |
| Agentic & Tools | — | 64 |
| Specifications | ||
| Developer | OpenAI | Meta AI |
| Family | GPT | — |
| Released | Mar 5, 2026 | Apr 8, 2026 |
| Parameters | — | — |
| Availability | API access | API access |
| Context window | 1.1M | — |
| Price — $/M input | $30.00 | — |
| Price — $/M output | $180.00 | — |
| Inputs | text, image, file | — |
| Outputs | text | — |
| Benchmarks | ||
| ARC-AGI | 95% | — |
| ARC-AGI-2 | 83% | — |
| FrontierMath | 50% | 39% |
| FrontierMath Tier 4 | 38% | 15% |
| GPQA Diamond | 95% | 90% |
| Humanity's Last Exam | 44% | 41% |
| SimpleBench | 74% | — |
| SimpleQA Verified | 48% | 66% |
| WeirdML | 57% | — |
| AIME 2024/2025 | — | 89% |
| SciCode | — | 52% |
| WebDev Arena | — | 1513 |
| τ²-bench | — | 92% |
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.
Frequently asked questions
Is GPT-5.4 Pro better than Muse Spark?
On Epoch AI's Capabilities Index, GPT-5.4 Pro scores higher (158) than Muse Spark (154). The right pick depends on your task — compare their coding, math, and reasoning scores in the table above.
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Benchmarks & model data from Epoch AI (CC BY); pricing & specs from OpenRouter. ECI = Epoch Capabilities Index.