Claude Sonnet 5.5 vs Muse Spark 1.3 Max: Benchmark Comparison
Claude Sonnet 5.5 has the higher score on 11 of 14 shared benchmarks; Muse Spark 1.3 Max leads on 3.
The largest observed score gap is 42.00 pts on ProofBench v1.1 , where Claude Sonnet 5.5 leads.
Reported ±1 standard-error ranges overlap on 1 of 14 shared benchmarks with comparable uncertainty data. This is not a pairwise statistical significance test.
Shared benchmark results
Scores and reported standard errors come from the latest visible Vals benchmark version available for both models.
| Benchmark | Claude Sonnet 5.5 | Muse Spark 1.3 Max | Gap | Reported uncertainty |
|---|---|---|---|---|
| Immigration | 68.96% ±1.54 | 64.93% ±1.56 | 4.03 pts | Reported ±1 SE ranges do not overlap |
| Legal Research Bench | 48.08% ±3.47 | 55.29% ±3.46 | 7.21 pts | Reported ±1 SE ranges do not overlap |
| Tax Agent Bench | 41.96% ±3.56 | 42.44% ±3.51 | 0.48 pts | Reported ±1 SE ranges overlap |
| ProofBench v1.1 | 100.00% ±0.00 | 58.00% ±4.96 | 42.00 pts | Reported ±1 SE ranges do not overlap |
| MysteryMechanism | 49.10% ±3.36 | 36.04% ±3.23 | 13.06 pts | Reported ±1 SE ranges do not overlap |
| Terminal-Bench-Science | 47.14% ±6.01 | 10.00% ±3.61 | 37.14 pts | Reported ±1 SE ranges do not overlap |
| IOI | 83.06% ±3.74 | 56.56% ±2.52 | 26.50 pts | Reported ±1 SE ranges do not overlap |
| ProgramBench | 6.50% ±1.75 | 2.50% ±1.11 | 4.00 pts | Reported ±1 SE ranges do not overlap |
| SWE-bench Multimodal | 58.33% ±2.25 | 43.13% ±2.26 | 15.21 pts | Reported ±1 SE ranges do not overlap |
| Terminal-Bench 4.0 | 64.14% ±1.01 | 24.75% ±0.51 | 39.39 pts | Reported ±1 SE ranges do not overlap |
| Vibe Code Bench v1.1 | 92.39% ±1.26 | 85.86% ±2.51 | 6.54 pts | Reported ±1 SE ranges do not overlap |
| CyberBench v1.1 | 59.58% ±5.21 | 72.74% ±5.67 | 13.15 pts | Reported ±1 SE ranges do not overlap |
| SRE Bench | 30.15% ±2.84 | 3.82% ±1.19 | 26.34 pts | Reported ±1 SE ranges do not overlap |
| Access to Justice Benchmark | 74.94% ±0.70 | 72.15% ±0.72 | 2.79 pts | Reported ±1 SE ranges do not overlap |
Performance by category
| Category | Claude Sonnet 5.5 average | Muse Spark 1.3 Max average |
|---|---|---|
| Legal | 58.52% | 60.11% |
| Finance | 41.96% | 42.44% |
| Math | 100.00% | 58.00% |
| Science | 48.12% | 23.02% |
| Coding | 60.88% | 42.56% |
| Cyber | 44.87% | 38.28% |
| Social Mobility | 74.94% | 72.15% |
Cost and latency
Cost per test appears only where the benchmark reports it for both models. Latency is the measured completion time for that benchmark.
| Benchmark | Claude Sonnet 5.5 cost | Muse Spark 1.3 Max cost | Claude Sonnet 5.5 latency | Muse Spark 1.3 Max latency |
|---|---|---|---|---|
| Immigration | $1.16 | $0.06 | 11m03s | 97.63s |
| Legal Research Bench | $13.66 | $0.59 | 1h33m | 5m17s |
| Tax Agent Bench | $8.73 | $0.39 | 59m21s | 4m09s |
| ProofBench v1.1 | $0.52 | $0.48 | 5m48s | 9m29s |
| MysteryMechanism | $2.98 | $0.85 | 23m30s | 7m32s |
| Terminal-Bench-Science | $19.57 | $6.09 | 2h46m | 1h24m |
| IOI | $5.81 | $1.73 | 45m51s | 28m58s |
| ProgramBench | $22.62 | $54.29 | 2h07m | 5h28m |
| SWE-bench Multimodal | $3.26 | $0.86 | 24m13s | 10m52s |
| Terminal-Bench 4.0 | $10.75 | $6.65 | 1h22m | 52m56s |
| Vibe Code Bench v1.1 | $19.73 | $2.54 | 1h01m | 16m18s |
| CyberBench v1.1 | $2.91 | $3.34 | 33m53s | 16m18s |
| SRE Bench | $17.27 | $25.86 | 1h55m | 1h47m |
| Access to Justice Benchmark | $2.37 | $0.22 | 17m34s | 4m13s |
Results available only for Claude Sonnet 5.5
- Vals Index
- Vals Finance Index
- Vals Legal Index
- Vals Science Index
- HLAB-Vals-1.1
- ClaimBench
- EMB v1.1
- Finance Agent v2.1
- MedCode
- MedScribe
- BioMysteryBench
- SAGE
- Code Migration v1.1
- Public Benefits Bench v1.1
Results available only for Muse Spark 1.3 Max
- Vals RSI Index
- Vibe Code Bench 1-100
- CUA-bench