Grok 4.3 vs Muse Spark 1.3
Grok 4.3 
Muse Spark 1.3 Verdict
- Muse Spark 1.3 (xhigh) leads on quality: 63.9 vs 60.7.
- Grok 4.3 (medium) is stronger in instruction following.
- Muse Spark 1.3 (xhigh) is stronger in agents & tools, composite, knowledge, long context, multimodal, coding.
- Grok 4.3 (medium) is 1.3× cheaper ($1.56 vs $2.00 per 1M blended).
- Muse Spark 1.3 (xhigh) streams 1.7× faster (190 vs 112 tokens per second).
| Metric | Grok 4.3 (medium) | Muse Spark 1.3 (xhigh) |
|---|---|---|
| BenchLeader Index | 60.7 | 63.9 |
| Agents & tools score | 60.1 | 60.2 |
| Composite score | 60.3 | 78.6 |
| Instruction following score | 80.0 | – |
| Knowledge score | 72.1 | 75.1 |
| Long context score | 64.0 | 68.1 |
| Multimodal score | 60.2 | 66.6 |
| Coding score | – | 70.3 |
| Blended price $/M | $1.56 | $2.00 |
| Output speed | 112 tok/s | 190 tok/s |
| Time to first answer | 12.1 s | 35.7 s |
| Context window | 1M | 1M |
| 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 | 24.8 | 45.2 |
| IFBench | 83.3% | – |
| AA-LCR | 75.0% | 83.0% |
| MMMU-Pro | 75.8% | 82.0% |
| AA-Omniscience | 16.7 | 23.1 |
| Terminal-Bench Hard | 30.3% | – |
| GPQA Diamond (AA) | 89.0% | 94.1% |
| Humanity's Last Exam (AA) | 30.0% | 47.5% |
| SciCode (AA) | – | 59.7% |
| τ²-Bench Telecom (AA) | 91.2% | – |
| Terminal-Bench 2.1 (Vals) | – | 72.3% |
| Vals Index | – | 60.3 |
Data as of 2026-09-10. Best configuration of each model; every score links to its source on the model pages.
Grok 4.3 vs Muse Spark 1.3: questions
- Is Grok 4.3 better than Muse Spark 1.3?
- Muse Spark 1.3 (xhigh) leads on quality: 63.9 vs 60.7. 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.
- Is Grok 4.3 better than Muse Spark 1.3 for agentic tasks?
- Muse Spark 1.3 scores higher in agentic tasks (60 vs 60 on the category index, where 50 is average).
- Which is cheaper, Grok 4.3 or Muse Spark 1.3?
- Grok 4.3 is cheaper: $1.56 against $2.00 per million tokens, blended at three input tokens per output token.
- Which is faster, Grok 4.3 or Muse Spark 1.3?
- Muse Spark 1.3 streams faster: 190 against 112 output tokens per second.
- Which has the larger context window?
- Both accept 1M tokens of context.