Model comparison
Composer 2 vs Muse Spark 1.1
Head-to-head evidence from 2 shared benchmark results across 2 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.
Public leaderboard positions: Composer 2 unranked (Not scored); Muse Spark 1.1 #6 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.
Evidence parity. Composer 2 and Muse Spark 1.1 share 2 comparable benchmark results. 2 of 8 categories are comparable. 3 results are unique to Composer 2; 37 to Muse Spark 1.1.
Updated July 23, 2026- Shared results
- 2
- Composer 2 only
- 3
- Muse Spark 1.1 only
- 37
- Comparable categories
- 2 / 8
Treat this as a split decision. Composer 2 makes more sense if its workflow fits your team better; Muse Spark 1.1 is the better fit if agentic is the priority or you need the larger 1M context window.
Confidence note. This is a partial-evidence comparison with 2 shared benchmark results across 2 evidence categories; 2 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.
Why this result
Composer 2 and Muse Spark 1.1 finish on the same BenchAlign overall score, so this is less about a single winner and more about where the edge shows up. The BenchAlign headline says tie; the benchmark table is where the real choice happens.
Muse Spark 1.1 gives you the larger context window at 1M, compared with 200K for Composer 2.
Category breakdown
Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.
| Category | Composer 2 | Δ | Muse Spark 1.1 |
|---|---|---|---|
| Agentic | Composer 261.7 | Margin→ 18.7 | Muse Spark 1.180.4 |
| Coding | Composer 258.0 | Margin→ 3.5 | Muse Spark 1.161.5 |
| Knowledge | Composer 2Not measured | MarginNo overlap | Muse Spark 1.162.1 |
| Multimodal | Composer 2Not measured | MarginNo overlap | Muse Spark 1.188.4 |
Decisive benchmark drivers
The largest measured benchmark gaps in this matchup, with exact reported values.
More
- Source ↗
Terminal-Bench 2.0
AgenticA 61.7%B 80%Winner: Muse Spark 1.1Δ 18.3Terminal-Bench 2.0: Composer 2 scored 61.7%; Muse Spark 1.1 scored 80%. Muse Spark 1.1 wins this benchmark.
Operational comparison
Runtime and commercial metrics are compared only when both models have a complete sourced value.
| Metric | Composer 2 | Muse Spark 1.1 | Comparison |
|---|---|---|---|
| Input / output priceUSD per 1M tokens | Composer 2$0.5 input / $2.5 output | Muse Spark 1.1Not available | A complete price comparison is not available. |
| Generation speedtokens per second | Composer 2Not available | Muse Spark 1.1Not available | A complete speed comparison is not available. |
| First-answer latencyseconds to first token | Composer 2Not available | Muse Spark 1.1Not available | A complete latency comparison is not available. |
| Context windowmaximum listed tokens | Composer 2200K | Muse Spark 1.11M | Muse Spark 1.1 lists the larger context window. |
Benchmark Deep Dive
AgenticMuse Spark 1.1 wins20 benchmarks
| Benchmark | Composer 2 | Muse Spark 1.1 | Result |
|---|---|---|---|
| Terminal-Bench 2.0Source | 61.7% | 80% | Muse Spark 1.1 leads |
| MCP AtlasSource | — | 88.1% | Not comparable |
| ToolathlonSource | — | 75.6% | Not comparable |
| OSWorld-VerifiedSource | — | 80.8% | Not comparable |
| DeepSearchQASource | — | 84.9% | Not comparable |
| CyberGymSource | — | 59.0% | Not comparable |
| Finance Agent v2Source | — | 57.2% | Not comparable |
| deepSweSource | — | 53.3% | Not comparable |
| OSWorld 2.0Source | — | 14.2% | Not comparable |
| JobBenchSource | — | 54.7% | Not comparable |
| CybenchSource | — | 92.9% | Not comparable |
| ExploitGymSource | — | 0.8% | Not comparable |
| AA Agentic IndexSource | — | 37.5% | Not comparable |
| GDPval-AASource | — | 43.7% | Not comparable |
| GDPval-AASource | — | 1374 | Not comparable |
| AA BriefcaseSource | — | 863 | Not comparable |
| AA AutomationBenchSource | — | 42.8% | Not comparable |
| AA Harvey LABSource | — | 93.1% | Not comparable |
| AA Tau3 BankingSource | — | 25.2% | Not comparable |
| aaTerminalBench21Source | — | 77.9% | Not comparable |
CodingMuse Spark 1.1 wins7 benchmarks
| Benchmark | Composer 2 | Muse Spark 1.1 | Result |
|---|---|---|---|
| SWE MultilingualSource | 73.7% | — | Not comparable |
| SWE-RebenchSource | 58% | — | Not comparable |
| React Native EvalsSource | 96.1% | — | Not comparable |
| Terminal-Bench 2.0Source | 61.7% | 80.0% | Muse Spark 1.1 leads |
| SWE-bench ProSource | — | 61.5% | Not comparable |
| AA Coding IndexSource | — | 71.3% | Not comparable |
| AA-SciCodeSource | — | 58.2% | Not comparable |
Reasoning3 benchmarks
Knowledge9 benchmarks
| Benchmark | Composer 2 | Muse Spark 1.1 | Result |
|---|---|---|---|
| HLESource | — | 62.1% | Not comparable |
| HLE w/o toolsSource | — | 52.2% | Not comparable |
| HealthBench ProfessionalSource | — | 59.3% | Not comparable |
| Artificial Analysis Intelligence IndexSource | — | 50.6% | Not comparable |
| AA-GPQA DiamondSource | — | 89.8% | Not comparable |
| AA-HLESource | — | 45.1% | Not comparable |
| AA-Omniscience IndexSource | — | 18.0% | Not comparable |
| AA-Omniscience AccuracySource | — | 40.6% | Not comparable |
| AA-Omniscience Hallucination RateSource | — | 38.1% | Not comparable |
Frequently Asked Questions (3)
Which is better, Composer 2 or Muse Spark 1.1?
Composer 2 and Muse Spark 1.1 are tied on the BenchAlign overall score, so the right pick depends on which category matters most for your use case.
Which is better for coding, Composer 2 or Muse Spark 1.1?
Muse Spark 1.1 has the edge for coding in this comparison, averaging 61.5 versus 58. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
Which is better for agentic tasks, Composer 2 or Muse Spark 1.1?
Muse Spark 1.1 has the edge for agentic tasks in this comparison, averaging 80.4 versus 61.7. Inside this category, Terminal-Bench 2.0 is the benchmark that creates the most daylight between them.
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