GPT-5 Pro vs Muse Spark 1.2
GPT-5 Pro 
Muse Spark 1.2 Verdict
- Muse Spark 1.2 leads on quality: 62.7 vs 60.8.
- GPT-5 Pro is stronger in multimodal.
- Muse Spark 1.2 is stronger in knowledge, reasoning, coding, composite, long context, maths.
- Muse Spark 1.2 is 21× cheaper ($2.00 vs $41.25 per 1M blended).
| Metric | GPT-5 Pro | Muse Spark 1.2 |
|---|---|---|
| BenchLeader Index | 60.8 | 62.7 |
| Knowledge score | 68.0 | 77.1 |
| Multimodal score | 67.4 | – |
| Reasoning score | 57.6 | 70.7 |
| Coding score | – | 66.5 |
| Composite score | – | 79.3 |
| Long context score | – | 66.0 |
| Maths score | – | 54.3 |
| Blended price $/M | $41.25 | $2.00 |
| Output speed | – | 193 tok/s |
| Time to first answer | – | 23.4 s |
| Context window | 400k | 1.0M |
| Humanity's Last Exam | 31.6% | – |
| SimpleBench | 61.6% | 74.5% |
| ProofBench | – | 43.0% |
| Epoch Capabilities Index | 150.3 | 155.5 |
| AA Intelligence Index | – | 39.8 |
| AA-LCR | – | 79.0% |
| AA-Omniscience | – | 27.2 |
| GPQA Diamond (AA) | – | 90.4% |
| Humanity's Last Exam (AA) | – | 45.5% |
| SciCode (AA) | – | 57.4% |
| IOI | – | 49.5% |
| 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 1.2: questions
- Is GPT-5 Pro better than Muse Spark 1.2?
- Muse Spark 1.2 leads on quality: 62.7 vs 60.8. The BenchLeader Index combines every independent quality benchmark; Muse Spark 1.2 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 1.2?
- Muse Spark 1.2 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 1.2 accepts more context: 1.0M against 400k tokens.