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Model comparison

Claude Sonnet 5 vs Muse Spark 1.1

Data verified

Head-to-head evidence from 26 shared benchmark results across 5 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.

65.32/100
Margin
12.1pts
winning →
77.44/100
2 category wins2 category wins

Public leaderboard positions: Claude Sonnet 5 #29 (Estimated); Muse Spark 1.1 #6 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.

Evidence parity. Claude Sonnet 5 and Muse Spark 1.1 share 26 comparable benchmark results. 4 of 8 categories are comparable. 10 results are unique to Claude Sonnet 5; 13 to Muse Spark 1.1.

Updated July 23, 2026
Shared results
26
Claude Sonnet 5 only
10
Muse Spark 1.1 only
13
Comparable categories
4 / 8

Pick Muse Spark 1.1 if you want the stronger benchmark profile. Claude Sonnet 5 only becomes the better choice if coding is the priority.

Confidence note. This is a partial-evidence comparison with 26 shared benchmark results across 5 evidence categories; 4 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.

Why this result

Muse Spark 1.1 is clearly ahead on the BenchAlign aggregate, 77.44 to 65.32. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Muse Spark 1.1's sharpest advantage is in knowledge, where it averages 62.1 against 57.4. The single biggest benchmark swing on the page is HLE, 57.4% to 62.1%. Claude Sonnet 5 does hit back in coding, so the answer changes if that is the part of the workload you care about most.

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 scores and score margins for Claude Sonnet 5 and Muse Spark 1.1
CategoryClaude Sonnet 5ΔMuse Spark 1.1
CodingClaude Sonnet 576.7Margin← 15.2Muse Spark 1.161.5
KnowledgeClaude Sonnet 557.4Margin→ 4.7Muse Spark 1.162.1
AgenticClaude Sonnet 581.9Margin← 1.5Muse Spark 1.180.4
MultimodalClaude Sonnet 588.3Margin→ 0.1Muse Spark 1.188.4

Decisive benchmark drivers

The largest measured benchmark gaps in this matchup, with exact reported values.

More
A · Claude Sonnet 5B · Muse Spark 1.1

  1. HLE

    Knowledge
    Source ↗
    A 57.4%B 62.1%
    Winner: Muse Spark 1.1Δ 4.7
    HLE: Claude Sonnet 5 scored 57.4%; Muse Spark 1.1 scored 62.1%. Muse Spark 1.1 wins this benchmark.

  2. SWE-bench Pro

    Coding
    Source ↗
    A 63.2%B 61.5%
    Winner: Claude Sonnet 5Δ 1.7
    SWE-bench Pro: Claude Sonnet 5 scored 63.2%; Muse Spark 1.1 scored 61.5%. Claude Sonnet 5 wins this benchmark.

  3. Terminal-Bench 2.0

    Agentic
    Source ↗
    A 80.4%B 80%
    Winner: Claude Sonnet 5Δ 0.4
    Terminal-Bench 2.0: Claude Sonnet 5 scored 80.4%; Muse Spark 1.1 scored 80%. Claude Sonnet 5 wins this benchmark.

  4. OSWorld-Verified

    Agentic
    Source ↗
    A 81.2%B 80.8%
    Winner: Claude Sonnet 5Δ 0.4
    OSWorld-Verified: Claude Sonnet 5 scored 81.2%; Muse Spark 1.1 scored 80.8%. Claude Sonnet 5 wins this benchmark.

  5. CharXiv

    Multimodal
    Source ↗
    A 88.3%B 88.4%
    Winner: Muse Spark 1.1Δ 0.1
    CharXiv: Claude Sonnet 5 scored 88.3%; Muse Spark 1.1 scored 88.4%. Muse Spark 1.1 wins this benchmark.

Operational comparison

Runtime and commercial metrics are compared only when both models have a complete sourced value.

MetricClaude Sonnet 5Muse Spark 1.1Comparison
Input / output priceUSD per 1M tokensClaude Sonnet 5$2 input / $10 outputMuse Spark 1.1Not availableA complete price comparison is not available.
Generation speedtokens per secondClaude Sonnet 5Not availableMuse Spark 1.1Not availableA complete speed comparison is not available.
First-answer latencyseconds to first tokenClaude Sonnet 5Not availableMuse Spark 1.1Not availableA complete latency comparison is not available.
Context windowmaximum listed tokensClaude Sonnet 51MMuse Spark 1.11MListed context windows are equal.

Benchmark Deep Dive

AgenticClaude Sonnet 5 wins
BenchmarkClaude Sonnet 5Muse Spark 1.1Result
Terminal-Bench 2.0Source 80.4%80%Claude Sonnet 5 leads
BrowseCompSource 84.7%—Not comparable
HLE w/ toolsSource 57.4%—Not comparable
OSWorld-VerifiedSource 81.2%80.8%Claude Sonnet 5 leads
GDPval-AASource 16071374Claude Sonnet 5 leads
AA Agentic IndexSource 46.7%37.5%Claude Sonnet 5 leads
GDPval-AASource 55.4%43.7%Claude Sonnet 5 leads
AA BriefcaseSource 1388863Claude Sonnet 5 leads
AA AutomationBenchSource 39.2%42.8%Muse Spark 1.1 leads
AA EnterpriseOps-GymSource 44.7%—Not comparable
AA Harvey LABSource 90.1%93.1%Muse Spark 1.1 leads
AA Tau3 BankingSource 28.2%25.2%Claude Sonnet 5 leads
aaTerminalBench21Source 80.5%77.9%Claude Sonnet 5 leads
MCP AtlasSource —88.1%Not comparable
ToolathlonSource —75.6%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
CodingClaude Sonnet 5 wins
BenchmarkClaude Sonnet 5Muse Spark 1.1Result
SWE-bench VerifiedSource 85.2%—Not comparable
SWE-bench ProSource 63.2%61.5%Claude Sonnet 5 leads
SWE MultilingualSource 78.3%—Not comparable
SWE MultimodalSource 28.1%—Not comparable
Terminal-Bench 2.0Source 80.4%80.0%Claude Sonnet 5 leads
FrontierCode 1.1 MainSource 42.7%—Not comparable
cursorBench32Source 61.5%—Not comparable
AA Coding IndexSource 71.5%71.3%Claude Sonnet 5 leads
AA-SciCodeSource 53.6%58.2%Muse Spark 1.1 leads
Reasoning
BenchmarkClaude Sonnet 5Muse Spark 1.1Result
AA-LCRSource 70.7%63.3%Claude Sonnet 5 leads
CritPtSource 16.9%15.1%Claude Sonnet 5 leads
MRCR 1MSource —54.1%Not comparable
KnowledgeMuse Spark 1.1 wins
BenchmarkClaude Sonnet 5Muse Spark 1.1Result
HLESource 57.4%62.1%Muse Spark 1.1 leads
HLE w/o toolsSource 43.2%52.2%Muse Spark 1.1 leads
Artificial Analysis Intelligence IndexSource 53.4%50.6%Claude Sonnet 5 leads
AA-GPQA DiamondSource 91.1%89.8%Claude Sonnet 5 leads
AA-HLESource 39.6%45.1%Muse Spark 1.1 leads
AA-Omniscience IndexSource 15.3%18.0%Muse Spark 1.1 leads
AA-Omniscience AccuracySource 38.3%40.6%Muse Spark 1.1 leads
AA-Omniscience Hallucination RateSource 37.3%38.1%Claude Sonnet 5 leads
HealthBench ProfessionalSource —59.3%Not comparable
MultimodalMuse Spark 1.1 wins
BenchmarkClaude Sonnet 5Muse Spark 1.1Result
CharXivSource 88.3%88.4%Muse Spark 1.1 leads
CharXiv w/o toolsSource 77%—Not comparable
AA-MMMU-ProSource 77.3%—Not comparable
Design Arena WebsiteSource 13141299Claude Sonnet 5 leads
BabyVisionSource —76.3%Not comparable
Frequently Asked Questions (5)

Which is better, Claude Sonnet 5 or Muse Spark 1.1?

Muse Spark 1.1 is ahead on BenchLM's BenchAlign leaderboard, 77.44 to 65.32. The biggest single separator in this matchup is HLE, where the scores are 57.4% and 62.1%.

Which is better for knowledge tasks, Claude Sonnet 5 or Muse Spark 1.1?

Muse Spark 1.1 has the edge for knowledge tasks in this comparison, averaging 62.1 versus 57.4. Inside this category, HLE w/o tools is the benchmark that creates the most daylight between them.

Which is better for coding, Claude Sonnet 5 or Muse Spark 1.1?

Claude Sonnet 5 has the edge for coding in this comparison, averaging 76.7 versus 61.5. Inside this category, AA-SciCode is the benchmark that creates the most daylight between them.

Which is better for agentic tasks, Claude Sonnet 5 or Muse Spark 1.1?

Claude Sonnet 5 has the edge for agentic tasks in this comparison, averaging 81.9 versus 80.4. Inside this category, AA Briefcase is the benchmark that creates the most daylight between them.

Which is better for multimodal and grounded tasks, Claude Sonnet 5 or Muse Spark 1.1?

Muse Spark 1.1 has the edge for multimodal and grounded tasks in this comparison, averaging 88.4 versus 88.3. Inside this category, Design Arena Website is the benchmark that creates the most daylight between them.

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