Claude Fable 5 vs Muse Spark 1.3 Max: Benchmark Comparison
Claude Fable 5 has the higher score on 8 of 13 shared benchmarks; Muse Spark 1.3 Max leads on 5.
The largest observed score gap is 37.00 pts on ProofBench v1.1 , where Claude Fable 5 leads.
Reported ±1 standard-error ranges overlap on 6 of 12 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 Fable 5 | Muse Spark 1.3 Max | Gap | Reported uncertainty |
|---|---|---|---|---|
| Vals Index | 61.39% ±1.00 | 58.16% ±1.19 | 3.23 pts | Reported ±1 SE ranges do not overlap |
| Vals RSI Index | 24.32% | 19.64% | 4.68 pts | Uncertainty comparison unavailable |
| Harvey's Legal Agent Benchmark | 11.25% ±2.15 | 23.75% ±3.55 | 12.50 pts | Reported ±1 SE ranges do not overlap |
| Legal Research Bench | 49.52% ±3.48 | 55.29% ±3.46 | 5.77 pts | Reported ±1 SE ranges overlap |
| EMB | 73.67% ±2.47 | 67.43% ±3.06 | 6.24 pts | Reported ±1 SE ranges do not overlap |
| Finance Agent (v2) | 56.31% ±0.84 | 59.96% ±2.06 | 3.64 pts | Reported ±1 SE ranges do not overlap |
| Tax Agent Bench | 69.82% ±3.12 | 72.44% ±2.88 | 2.62 pts | Reported ±1 SE ranges overlap |
| ProofBench v1.1 | 95.00% ±2.19 | 58.00% ±4.96 | 37.00 pts | Reported ±1 SE ranges do not overlap |
| Terminal-Bench Science | 15.71% ±4.38 | 10.00% ±3.61 | 5.71 pts | Reported ±1 SE ranges overlap |
| Code Migration | 55.06% ±4.61 | 47.41% ±4.26 | 7.65 pts | Reported ±1 SE ranges overlap |
| ProgramBench | 2.00% ±0.99 | 2.50% ±1.11 | 0.50 pts | Reported ±1 SE ranges overlap |
| Terminal-Bench 4.0 | 41.41% ±1.34 | 24.75% ±0.51 | 16.67 pts | Reported ±1 SE ranges do not overlap |
| Vibe Code Bench v1.1 | 90.35% ±2.10 | 85.86% ±2.51 | 4.50 pts | Reported ±1 SE ranges overlap |
Performance by category
| Category | Claude Fable 5 average | Muse Spark 1.3 Max average |
|---|---|---|
| Legal | 30.38% | 39.52% |
| Finance | 66.60% | 66.61% |
| Math | 95.00% | 58.00% |
| Science | 15.71% | 10.00% |
| Coding | 47.21% | 40.13% |
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 Fable 5 cost | Muse Spark 1.3 Max cost | Claude Fable 5 latency | Muse Spark 1.3 Max latency |
|---|---|---|---|---|
| Vals Index | $29.59 | $3.79 | 42m24s | 23m33s |
| Vals RSI Index | $491.22 | $48.82 | 90h00m | 90h00m |
| Harvey's Legal Agent Benchmark | $19.23 | $2.26 | 26m53s | 14m35s |
| Legal Research Bench | $9.79 | $0.59 | 22m18s | 5m17s |
| EMB | $12.35 | $2.55 | 26m34s | 13m50s |
| Finance Agent (v2) | $8.06 | $0.76 | 10m11s | 3m19s |
| Tax Agent Bench | $6.70 | $0.39 | 14m27s | 4m09s |
| ProofBench v1.1 | $5.45 | $0.48 | 13m43s | 9m29s |
| Terminal-Bench Science | $51.99 | $6.09 | 1h59m | 1h24m |
| Code Migration | $112.10 | $14.21 | 1h49m | 1h24m |
| ProgramBench | $75.68 | $54.29 | 2h37m | 5h28m |
| Terminal-Bench 4.0 | $30.34 | $6.65 | 1h08m | 52m56s |
| Vibe Code Bench v1.1 | $41.71 | $2.54 | 1h02m | 16m18s |
Results available only for Claude Fable 5
- LegalBench
- MortgageTax
- TaxEval v2
- MedCode
- MedScribe
- GPQA Diamond
- MMLU Pro
- MMMU Pro
- SAGE
- LiveCodeBench
- SWE-bench
- Public Benefits Bench v1.1
Results available only for Muse Spark 1.3 Max
- MysteryMechanism
- IOI
- Vibe Code Bench 1-100
- CyberBench v1.1
- CUA-bench