Muse Spark 1.3 Max vs GPT-6 Astra: Benchmark Comparison
Muse Spark 1.3 Max has the higher score on 5 of 18 shared benchmarks; GPT-6 Astra leads on 13.
The largest observed score gap is 52.86 pts on Terminal-Bench Science , where GPT-6 Astra leads.
Reported ±1 standard-error ranges overlap on 3 of 16 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 | Muse Spark 1.3 Max | GPT-6 Astra | Gap | Reported uncertainty |
|---|---|---|---|---|
| Vals Index | 58.16% ±1.19 | 63.13% ±1.19 | 4.96 pts | Reported ±1 SE ranges do not overlap |
| Vals RSI Index | 19.64% | 27.07% | 7.43 pts | Uncertainty comparison unavailable |
| Harvey's Legal Agent Benchmark | 23.75% ±3.55 | 5.42% ±1.17 | 18.33 pts | Reported ±1 SE ranges do not overlap |
| Legal Research Bench | 55.29% ±3.46 | 39.42% ±3.40 | 15.86 pts | Reported ±1 SE ranges do not overlap |
| EMB | 67.43% ±3.06 | 71.70% ±2.48 | 4.27 pts | Reported ±1 SE ranges overlap |
| Finance Agent (v2) | 59.96% ±2.06 | 53.54% ±2.08 | 6.42 pts | Reported ±1 SE ranges do not overlap |
| Tax Agent Bench | 72.44% ±2.88 | 63.34% ±3.15 | 9.11 pts | Reported ±1 SE ranges do not overlap |
| ProofBench v1.1 | 58.00% ±4.96 | 99.00% ±1.00 | 41.00 pts | Reported ±1 SE ranges do not overlap |
| MysteryMechanism | 36.04% ±3.23 | 53.15% ±3.36 | 17.12 pts | Reported ±1 SE ranges do not overlap |
| Terminal-Bench Science | 10.00% ±3.61 | 62.86% ±5.82 | 52.86 pts | Reported ±1 SE ranges do not overlap |
| Code Migration | 47.41% ±4.26 | 67.74% ±4.22 | 20.33 pts | Reported ±1 SE ranges do not overlap |
| IOI | 56.56% ±2.52 | 100.00% ±0.00 | 43.44 pts | Reported ±1 SE ranges do not overlap |
| ProgramBench | 2.50% ±1.11 | 5.50% ±1.62 | 3.00 pts | Reported ±1 SE ranges do not overlap |
| Terminal-Bench 4.0 | 24.75% ±0.51 | 59.60% ±4.40 | 34.85 pts | Reported ±1 SE ranges do not overlap |
| Vibe Code Bench 1-100 | 20.46% ±3.85 | 27.64% ±4.08 | 7.18 pts | Reported ±1 SE ranges overlap |
| Vibe Code Bench v1.1 | 85.86% ±2.51 | 89.59% ±2.17 | 3.74 pts | Reported ±1 SE ranges overlap |
| CyberBench v1.1 | 72.74% ±5.67 | 41.07% ±2.56 | 31.67 pts | Reported ±1 SE ranges do not overlap |
| CUA-bench | 5.83% | 19.17% | 13.33 pts | Uncertainty comparison unavailable |
Performance by category
| Category | Muse Spark 1.3 Max average | GPT-6 Astra average |
|---|---|---|
| Legal | 39.52% | 22.42% |
| Finance | 66.61% | 62.86% |
| Math | 58.00% | 99.00% |
| Science | 23.02% | 58.00% |
| Coding | 39.59% | 58.35% |
| Cyber | 72.74% | 41.07% |
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 | Muse Spark 1.3 Max cost | GPT-6 Astra cost | Muse Spark 1.3 Max latency | GPT-6 Astra latency |
|---|---|---|---|---|
| Vals Index | $3.79 | $18.46 | 23m33s | 27m48s |
| Vals RSI Index | $48.82 | $759.51 | 90h00m | 90h00m |
| Harvey's Legal Agent Benchmark | $2.26 | $26.16 | 14m35s | 24m49s |
| Legal Research Bench | $0.59 | $10.58 | 5m17s | 24m51s |
| EMB | $2.55 | $5.83 | 13m50s | 13m24s |
| Finance Agent (v2) | $0.76 | $6.82 | 3m19s | 11m33s |
| Tax Agent Bench | $0.39 | $5.80 | 4m09s | 15m01s |
| ProofBench v1.1 | $0.48 | $1.71 | 9m29s | 5m08s |
| MysteryMechanism | $0.85 | $1.56 | 7m32s | 8m09s |
| Terminal-Bench Science | $6.09 | $20.80 | 1h24m | 1h49m |
| Code Migration | $14.21 | $44.36 | 1h24m | 58m30s |
| IOI | $1.73 | $6.50 | 28m58s | 31m40s |
| ProgramBench | $54.29 | $11.57 | 5h28m | 27m02s |
| Terminal-Bench 4.0 | $6.65 | $9.58 | 52m56s | 35m42s |
| Vibe Code Bench 1-100 | $5.60 | $84.72 | 20m02s | 3h26m |
| Vibe Code Bench v1.1 | $2.54 | $38.51 | 16m18s | 39m04s |
| CyberBench v1.1 | $3.34 | $1.84 | 16m18s | 4m10s |
| CUA-bench | $143.48 | $1821.37 | 36.39s | 32.09s |
Results available only for Muse Spark 1.3 Max
None.
Results available only for GPT-6 Astra
- MedCode
- MedScribe
- BioMysteryBench
- SAGE
- SRE Bench
- Time Horizon Index: KSP