Grok 4.20 Multi-Agent vs Muse Spark 1.3
Grok 4.20 Multi-Agent 
Muse Spark 1.3 Verdict
- Muse Spark 1.3 (max) leads on quality: 69.4 vs 59.2.
- Muse Spark 1.3 (max) is stronger in coding, human preference, maths, multimodal, reasoning, agents & tools, composite, knowledge, long context.
- Grok 4.20 Multi-Agent is 1.3× cheaper ($1.56 vs $2.00 per 1M blended).
| Metric | Grok 4.20 Multi-Agent | Muse Spark 1.3 (max) |
|---|---|---|
| BenchLeader Index | 59.2 | 69.4 |
| Coding score | 65.5 | 66.7 |
| Human preference score | 67.0 | 69.8 |
| Maths score | 64.4 | 66.0 |
| Multimodal score | 60.4 | 67.4 |
| Reasoning score | 65.9 | 82.9 |
| Agents & tools score | – | 71.0 |
| Composite score | – | 89.7 |
| Knowledge score | – | 75.9 |
| Long context score | – | 68.0 |
| Blended price $/M | $1.56 | $2.00 |
| Output speed | 304 tok/s | 241 tok/s |
| Time to first answer | 9.9 s | 29.3 s |
| Context window | 1M | 1.0M |
| FrontierMath Tiers 1–3 | – | 74.0% |
| FrontierMath Tier 4 | – | 46.3% |
| LMArena Text | 1470 | 1493 |
| LMArena Hard Prompts | 1483 | 1516 |
| LMArena Coding | 1508 | 1537 |
| LMArena WebDev | – | 1652 |
| LMArena Vision | 1260 | 1315 |
| LMArena Agent | – | 4.2 |
| AA Intelligence Index | – | 48.1 |
| AA-LCR | – | 83.0% |
| AA-Omniscience | – | 25 |
| GPQA Diamond (AA) | – | 93.5% |
| Humanity's Last Exam (AA) | – | 48.7% |
| SciCode (AA) | – | 58.8% |
| IOI | – | 56.6% |
| Terminal-Bench 2.1 (Vals) | – | 79.0% |
| Vals Index | – | 64.5 |
| CritPt | – | 24.9% |
| GDPval (AA) | – | 58.7% |
| τ²-Bench Banking (AA) | – | 50.5% |
| Code Migration | – | 47.4% |
| Excel Modeling Benchmark | – | 67.4% |
| Finance Agent v2 | – | 60.0% |
| Harvey's Legal Agent Benchmark | – | 23.8% |
| Legal Research Bench | – | 55.3% |
| MysteryMechanism | – | 36.0% |
| Terminal-Bench 4.0 (Vals) | – | 27.8% |
| Terminal-Bench Science | – | 14.3% |
| Vibe Code Bench 1-100 | – | 20.5% |
| Vibe Code Bench v1.1 | – | 85.9% |
| LMArena Maths | 1453 | 1496 |
| LMArena Creative Writing | 1448 | 1453 |
| LMArena Instruction Following | 1443 | 1483 |
| LMArena Multi-turn | 1473 | 1493 |
| LMArena Longer Queries | 1457 | 1506 |
| LMArena Search | 1205 | – |
| LMArena Document | – | 1468 |
| Chess Puzzles | – | 38.0% |
| Mystery Game Puzzles | – | 25.0% |
Data as of 2026-09-21. Best configuration of each model; every score links to its source on the model pages.
Grok 4.20 Multi-Agent vs Muse Spark 1.3: questions
- Is Grok 4.20 Multi-Agent better than Muse Spark 1.3?
- Muse Spark 1.3 (max) leads on quality: 69.4 vs 59.2. The BenchLeader Index combines every independent quality benchmark; Muse Spark 1.3 (max) is ahead overall as of 2026-09-21, but check the category scores for your use.
- Is Grok 4.20 Multi-Agent better than Muse Spark 1.3 for coding?
- Muse Spark 1.3 scores higher in coding (67 vs 66 on the category index, where 50 is average).
- Which is cheaper, Grok 4.20 Multi-Agent or Muse Spark 1.3?
- Grok 4.20 Multi-Agent is cheaper: $1.56 against $2.00 per million tokens, blended at three input tokens per output token.
- Which is faster, Grok 4.20 Multi-Agent or Muse Spark 1.3?
- Grok 4.20 Multi-Agent streams faster: 304 against 241 output tokens per second.
- Which has the larger context window?
- Muse Spark 1.3 accepts more context: 1.0M against 1M tokens.