Claude Haiku 5.5 vs Muse Spark 1.3
Claude Haiku 5.5 
Muse Spark 1.3 Verdict
- Muse Spark 1.3 (max) leads on quality: 67.7 vs 61.3.
- Claude Haiku 5.5 (high) is stronger in maths.
- Muse Spark 1.3 (max) is stronger in coding, composite, knowledge, long context, reasoning, agents & tools, human preference, multimodal.
- Claude Haiku 5.5 (high) is 10× cheaper ($0.200 vs $2.00 per 1M blended).
| Metric | Claude Haiku 5.5 (high) | Muse Spark 1.3 (max) |
|---|---|---|
| BenchLeader Index | 61.3 | 67.7 |
| Coding score | 62.6 | 64.6 |
| Composite score | 72.4 | 84.1 |
| Knowledge score | 64.3 | 72.9 |
| Long context score | 63.8 | 66.8 |
| Maths score | 66.2 | 63.6 |
| Reasoning score | 72.1 | 78.1 |
| Agents & tools score | – | 70.3 |
| Human preference score | – | 69.4 |
| Multimodal score | – | 65.9 |
| Blended price $/M | $0.200 | $2.00 |
| Output speed | 174 tok/s | 175 tok/s |
| Time to first answer | 22.6 s | 70.5 s |
| Context window | 1M | 1.0M |
| FrontierMath Tiers 1–3 | – | 74.0% |
| FrontierMath Tier 4 | – | 46.3% |
| OTIS Mock AIME | 97.2% | – |
| SciCode | – | 58.8% |
| ProofBench | – | 58.0% |
| LMArena Text | – | 1494 |
| LMArena Hard Prompts | – | 1517 |
| LMArena Coding | – | 1538 |
| LMArena WebDev | 1587 | 1657 |
| LMArena Vision | – | 1309 |
| LMArena Agent | – | 4 |
| AA Intelligence Index v4.3.2 | 37.8 | 48.1 |
| AA-LCR | 77.3% | 83.0% |
| AA-Omniscience | 5.8 | 25 |
| GPQA Diamond (AA) | – | 93.5% |
| Humanity's Last Exam (AA) | 37.3% | 48.7% |
| SciCode (AA) | 48.7% | 58.8% |
| IOI | – | 56.6% |
| Terminal-Bench 2.1 (Vals) | – | 79.0% |
| Vals Index | – | 58.2 |
| CritPt | 18.6% | 24.9% |
| GDPval-AA v2.1 | 45.9% | 59.0% |
| τ³-Banking (AA) | – | 50.5% |
| ITBench SRE (AA) | – | 33.2% |
| Code Migration | – | 47.4% |
| CUA-bench | – | 5.8% |
| CyberBench | – | 72.7% |
| 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% |
| Tax Agent Bench | – | 72.4% |
| Terminal-Bench 4.0 (Vals) | – | 24.8% |
| Terminal-Bench Science | – | 10.0% |
| Vibe Code Bench 1-100 | – | 20.5% |
| Vibe Code Bench v1.1 | – | 85.9% |
| LMArena Maths | – | 1502 |
| LMArena Creative Writing | – | 1456 |
| LMArena Instruction Following | – | 1483 |
| LMArena Multi-turn | – | 1487 |
| LMArena Longer Queries | – | 1497 |
| LMArena Document | – | 1468 |
| Chess Puzzles | – | 38.0% |
| Mystery Game Puzzles | – | 25.0% |
| CursorBench | – | 41.6% |
| Terminal-Bench 4.0 (AA) | 21.7% | 33.3% |
| Terminal-Bench 2.1 (AA) | – | 84.3% |
| AutomationBench | 33.7% | 57.9% |
| GDP.pdf | 17.2% | 26.6% |
| MLCR | – | 43.3% |
| Harvey LAB | 1.1% | 8.9% |
| AA-Omniscience: accuracy | 34.8% | 43.6% |
| AA-Omniscience: non-hallucination | 55.5% | 67.1% |
| AA-Briefcase v1.1 | 1442 | 1581 |
Data as of 2026-10-11. Best configuration of each model; every score links to its source on the model pages.
Claude Haiku 5.5 vs Muse Spark 1.3: questions
- Is Claude Haiku 5.5 better than Muse Spark 1.3?
- Muse Spark 1.3 (max) leads on quality: 67.7 vs 61.3. The BenchLeader Index combines every independent quality benchmark; Muse Spark 1.3 (max) is ahead overall as of 2026-10-11, but check the category scores for your use.
- Is Claude Haiku 5.5 better than Muse Spark 1.3 for coding?
- Muse Spark 1.3 scores higher in coding (65 vs 63 on the category index, where 50 is average).
- Which is cheaper, Claude Haiku 5.5 or Muse Spark 1.3?
- Claude Haiku 5.5 is cheaper: $0.200 against $2.00 per million tokens, blended at three input tokens per output token.
- Which is faster, Claude Haiku 5.5 or Muse Spark 1.3?
- Muse Spark 1.3 streams faster: 175 against 174 output tokens per second.
- Which has the larger context window?
- Muse Spark 1.3 accepts more context: 1.0M against 1M tokens.