GPT-5 Pro vs Muse Spark 1.1
GPT-5 Pro 
Muse Spark 1.1 Verdict
- Muse Spark 1.1 leads on quality: 65.0 vs 60.8.
- GPT-5 Pro is stronger in multimodal.
- Muse Spark 1.1 is stronger in knowledge, reasoning, agents & tools, coding, composite, human preference, instruction following, long context, maths.
- Muse Spark 1.1 is 21× cheaper ($2.00 vs $41.25 per 1M blended).
| Metric | GPT-5 Pro | Muse Spark 1.1 |
|---|---|---|
| BenchLeader Index | 60.8 | 65.0 |
| Knowledge score | 68.0 | 73.2 |
| Multimodal score | 67.4 | 65.0 |
| Reasoning score | 57.6 | 69.2 |
| Agents & tools score | – | 62.7 |
| Coding score | – | 68.1 |
| Composite score | – | 72.3 |
| Human preference score | – | 66.3 |
| Instruction following score | – | 77.8 |
| Long context score | – | 65.4 |
| Maths score | – | 52.2 |
| Blended price $/M | $41.25 | $2.00 |
| Output speed | – | 194 tok/s |
| Time to first answer | – | 2.6 s |
| Context window | 400k | 1.0M |
| SimpleQA Verified | – | 57.8% |
| Humanity's Last Exam | 31.6% | – |
| SimpleBench | 61.6% | – |
| SciCode | – | 58.2% |
| APEX-Agents | – | 41.9% |
| ProofBench | – | 39.0% |
| Epoch Capabilities Index | 150.3 | 154.6 |
| LMArena Text | – | 1492 |
| LMArena Hard Prompts | – | 1511 |
| LMArena Coding | – | 1531 |
| LMArena WebDev | – | 1541 |
| LMArena Vision | – | 1293 |
| LMArena Agent | – | -2.6 |
| AA Intelligence Index | – | 34.3 |
| AA-LCR | – | 77.7% |
| AA-Omniscience | – | 28.1 |
| GPQA Diamond (AA) | – | 89.8% |
| Humanity's Last Exam (AA) | – | 46.2% |
| SciCode (AA) | – | 58.8% |
| SWE-Bench Pro | – | 61.5% |
| MCP Atlas | – | 88.1% |
| MultiChallenge | – | 75.3% |
| PRBench Finance | 51.1% | 55.0% |
| PRBench Legal | 49.9% | 57.0% |
| VISTA | 52.4% | – |
| MultiNRC | 65.2% | 65.6% |
| EQ-Bench 4 | – | 1260 |
| 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 1.1: questions
- Is GPT-5 Pro better than Muse Spark 1.1?
- Muse Spark 1.1 leads on quality: 65.0 vs 60.8. The BenchLeader Index combines every independent quality benchmark; Muse Spark 1.1 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 1.1?
- Muse Spark 1.1 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 1.1 accepts more context: 1.0M against 400k tokens.