GPT-5 Pro vs Muse Spark 1.3
GPT-5 Pro 
Muse Spark 1.3 Verdict
- Muse Spark 1.3 (xhigh) leads on quality: 63.9 vs 60.8.
- GPT-5 Pro is stronger in multimodal, reasoning.
- Muse Spark 1.3 (xhigh) is stronger in knowledge, agents & tools, coding, composite, long context.
- Muse Spark 1.3 (xhigh) is 21× cheaper ($2.00 vs $41.25 per 1M blended).
| Metric | GPT-5 Pro | Muse Spark 1.3 (xhigh) |
|---|---|---|
| BenchLeader Index | 60.8 | 63.9 |
| Knowledge score | 68.0 | 75.1 |
| Multimodal score | 67.4 | 66.6 |
| Reasoning score | 57.6 | – |
| Agents & tools score | – | 60.2 |
| Coding score | – | 70.3 |
| Composite score | – | 78.6 |
| Long context score | – | 68.1 |
| Blended price $/M | $41.25 | $2.00 |
| Output speed | – | 190 tok/s |
| Time to first answer | – | 35.7 s |
| Context window | 400k | 1M |
| Humanity's Last Exam | 31.6% | – |
| SimpleBench | 61.6% | – |
| Epoch Capabilities Index | 150.3 | – |
| LMArena WebDev | – | 1625 |
| LiveBench | – | 81.6% |
| LiveBench Reasoning | – | 89.7% |
| LiveBench Coding | – | 81.1% |
| LiveBench Agentic Coding | – | 64.1% |
| LiveBench Mathematics | – | 96.0% |
| LiveBench Data Analysis | – | 79.6% |
| LiveBench Language | – | 82.8% |
| AA Intelligence Index | – | 45.2 |
| AA-LCR | – | 83.0% |
| MMMU-Pro | – | 82.0% |
| AA-Omniscience | – | 23.1 |
| GPQA Diamond (AA) | – | 94.1% |
| Humanity's Last Exam (AA) | – | 47.5% |
| SciCode (AA) | – | 59.7% |
| Terminal-Bench 2.1 (Vals) | – | 72.3% |
| Vals Index | – | 60.3 |
| PRBench Finance | 51.1% | – |
| PRBench Legal | 49.9% | – |
| VISTA | 52.4% | – |
| MultiNRC | 65.2% | – |
| Kagi LLM Benchmark | 76.8% | – |
| ARC-AGI-1 | 70.2% | – |
| ARC-AGI-2 | 18.3% | – |
Data as of 2026-09-10. Best configuration of each model; every score links to its source on the model pages.
GPT-5 Pro vs Muse Spark 1.3: questions
- Is GPT-5 Pro better than Muse Spark 1.3?
- Muse Spark 1.3 (xhigh) leads on quality: 63.9 vs 60.8. The BenchLeader Index combines every independent quality benchmark; Muse Spark 1.3 (xhigh) is ahead overall as of 2026-09-10, but check the category scores for your use.
- Which is cheaper, GPT-5 Pro or Muse Spark 1.3?
- Muse Spark 1.3 is cheaper: $2.00 against $41.25 per million tokens, blended at three input tokens per output token.
- Which has the larger context window?
- Muse Spark 1.3 accepts more context: 1M against 400k tokens.