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Model comparison

Claude Sonnet 5 vs Muse Spark

Data verified

Head-to-head evidence from 20 shared benchmark results across 5 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.

65.32/100
Margin
5.7pts
winning →
71.04/100
4 category wins0 category wins

Public leaderboard positions: Claude Sonnet 5 #29 (Estimated); Muse Spark #13 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.

Evidence parity. Claude Sonnet 5 and Muse Spark share 20 comparable benchmark results. 4 of 8 categories are comparable. 16 results are unique to Claude Sonnet 5; 19 to Muse Spark.

Updated July 23, 2026
Shared results
20
Claude Sonnet 5 only
16
Muse Spark only
19
Comparable categories
4 / 8

Pick Muse Spark if you want the stronger benchmark profile. Claude Sonnet 5 only becomes the better choice if agentic is the priority or you need the larger 1M context window.

Confidence note. This is a partial-evidence comparison with 20 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 is clearly ahead on the BenchAlign aggregate, 71.04 to 65.32. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Claude Sonnet 5 gives you the larger context window at 1M, compared with 262K for Muse Spark.

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
CategoryClaude Sonnet 5ΔMuse Spark
AgenticClaude Sonnet 581.9Margin← 22.9Muse Spark59.0
CodingClaude Sonnet 576.7Margin← 8.9Muse Spark67.8
KnowledgeClaude Sonnet 557.4Margin← 7.0Muse Spark50.4
MultimodalClaude Sonnet 588.3Margin← 5.8Muse Spark82.5
ReasoningClaude Sonnet 5Not measuredMarginNo overlapMuse Spark42.5
MathClaude Sonnet 5Not measuredMarginNo overlapMuse Spark32.9

Decisive benchmark drivers

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

More
A · Claude Sonnet 5B · Muse Spark

  1. Terminal-Bench 2.0

    Agentic
    Source ↗
    A 80.4%B 59%
    Winner: Claude Sonnet 5Δ 21.4
    Terminal-Bench 2.0: Claude Sonnet 5 scored 80.4%; Muse Spark scored 59%. Claude Sonnet 5 wins this benchmark.

  2. SWE-bench Pro

    Coding
    Source ↗
    A 63.2%B 52.4%
    Winner: Claude Sonnet 5Δ 10.8
    SWE-bench Pro: Claude Sonnet 5 scored 63.2%; Muse Spark scored 52.4%. Claude Sonnet 5 wins this benchmark.

  3. SWE-bench Verified

    Coding
    Source ↗
    A 85.2%B 77.4%
    Winner: Claude Sonnet 5Δ 7.8
    SWE-bench Verified: Claude Sonnet 5 scored 85.2%; Muse Spark scored 77.4%. Claude Sonnet 5 wins this benchmark.

  4. HLE

    Knowledge
    Source ↗
    A 57.4%B 50.4%
    Winner: Claude Sonnet 5Δ 7
    HLE: Claude Sonnet 5 scored 57.4%; Muse Spark scored 50.4%. Claude Sonnet 5 wins this benchmark.

  5. CharXiv

    Multimodal
    Source ↗
    A 88.3%B 86.4%
    Winner: Claude Sonnet 5Δ 1.9
    CharXiv: Claude Sonnet 5 scored 88.3%; Muse Spark scored 86.4%. Claude Sonnet 5 wins this benchmark.

Operational comparison

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

MetricClaude Sonnet 5Muse SparkComparison
Input / output priceUSD per 1M tokensClaude Sonnet 5$2 input / $10 outputMuse SparkNot availableA complete price comparison is not available.
Generation speedtokens per secondClaude Sonnet 5Not availableMuse SparkNot availableA complete speed comparison is not available.
First-answer latencyseconds to first tokenClaude Sonnet 5Not availableMuse SparkNot availableA complete latency comparison is not available.
Context windowmaximum listed tokensClaude Sonnet 51MMuse Spark262KClaude Sonnet 5 lists the larger context window.

Benchmark Deep Dive

AgenticClaude Sonnet 5 wins
BenchmarkClaude Sonnet 5Muse SparkResult
Terminal-Bench 2.0Source 80.4%59%Claude Sonnet 5 leads
BrowseCompSource 84.7%—Not comparable
HLE w/ toolsSource 57.4%—Not comparable
OSWorld-VerifiedSource 81.2%—Not comparable
GDPval-AASource 16071144Claude Sonnet 5 leads
AA Agentic IndexSource 46.7%28.7%Claude Sonnet 5 leads
GDPval-AASource 55.4%32.2%Claude Sonnet 5 leads
AA BriefcaseSource 1388—Not comparable
AA AutomationBenchSource 39.2%—Not comparable
AA EnterpriseOps-GymSource 44.7%—Not comparable
AA Harvey LABSource 90.1%—Not comparable
AA Tau3 BankingSource 28.2%—Not comparable
aaTerminalBench21Source 80.5%—Not comparable
τ²-bench resultsSource —91.5%Not comparable
DeepSearchQASource —74.8%Not comparable
CyberGymSource —43.5%Not comparable
Claw-EvalSource —63.8%Not comparable
CodingClaude Sonnet 5 wins
BenchmarkClaude Sonnet 5Muse SparkResult
SWE-bench VerifiedSource 85.2%77.4%Claude Sonnet 5 leads
SWE-bench ProSource 63.2%52.4%Claude Sonnet 5 leads
SWE MultilingualSource 78.3%—Not comparable
SWE MultimodalSource 28.1%—Not comparable
Terminal-Bench 2.0Source 80.4%—Not comparable
FrontierCode 1.1 MainSource 42.7%—Not comparable
cursorBench32Source 61.5%—Not comparable
AA Coding IndexSource 71.5%58.6%Claude Sonnet 5 leads
AA-SciCodeSource 53.6%51.5%Claude Sonnet 5 leads
LiveCodeBench ProSource —80.0%Not comparable
Vibe Code BenchSource —19.67%Not comparable
Reasoning
BenchmarkClaude Sonnet 5Muse SparkResult
AA-LCRSource 70.7%69.7%Claude Sonnet 5 leads
CritPtSource 16.9%11.3%Claude Sonnet 5 leads
ARC-AGI-2Source —42.5%Not comparable
KnowledgeClaude Sonnet 5 wins
BenchmarkClaude Sonnet 5Muse SparkResult
HLESource 57.4%50.4%Claude Sonnet 5 leads
HLE w/o toolsSource 43.2%42.8%Claude Sonnet 5 leads
Artificial Analysis Intelligence IndexSource 53.4%43.1%Claude Sonnet 5 leads
AA-GPQA DiamondSource 91.1%88.4%Claude Sonnet 5 leads
AA-HLESource 39.6%39.9%Muse Spark leads
AA-Omniscience IndexSource 15.3%4.1%Claude Sonnet 5 leads
AA-Omniscience AccuracySource 38.3%44.6%Muse Spark leads
AA-Omniscience Hallucination RateSource 37.3%73.2%Claude Sonnet 5 leads
GPQA-DSource —89.5%Not comparable
HealthBench HardSource —42.8%Not comparable
MedXpertQA (Text)Source —52.6%Not comparable
Math
BenchmarkClaude Sonnet 5Muse SparkResult
FrontierMath v2 (Tiers 1-3)Source —39.000%Not comparable
FrontierMath v2 (Tier 4)Source —14.600%Not comparable
MultimodalClaude Sonnet 5 wins
BenchmarkClaude Sonnet 5Muse SparkResult
CharXivSource 88.3%86.4%Claude Sonnet 5 leads
CharXiv w/o toolsSource 77%—Not comparable
AA-MMMU-ProSource 77.3%80.5%Muse Spark leads
Design Arena WebsiteSource 1314—Not comparable
MMMU-ProSource —80.4%Not comparable
ERQASource —64.7%Not comparable
SimpleVQASource —71.3%Not comparable
ScreenSpot ProSource —84.1%Not comparable
ZeroBenchSource —33.0%Not comparable
MedXpertQA (MM)Source —78.4%Not comparable
Inst. Following
BenchmarkClaude Sonnet 5Muse SparkResult
AA-IFBenchSource —75.9%Not comparable
Frequently Asked Questions (5)

Which is better, Claude Sonnet 5 or Muse Spark?

Muse Spark is ahead on BenchLM's BenchAlign leaderboard, 71.04 to 65.32. The biggest single separator in this matchup is Terminal-Bench 2.0, where the scores are 80.4% and 59%.

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

Claude Sonnet 5 has the edge for knowledge tasks in this comparison, averaging 57.4 versus 50.4. Inside this category, AA-Omniscience Hallucination Rate is the benchmark that creates the most daylight between them.

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

Claude Sonnet 5 has the edge for coding in this comparison, averaging 76.7 versus 67.8. Inside this category, AA Coding Index is the benchmark that creates the most daylight between them.

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

Claude Sonnet 5 has the edge for agentic tasks in this comparison, averaging 81.9 versus 59. Inside this category, GDPval-AA is the benchmark that creates the most daylight between them.

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

Claude Sonnet 5 has the edge for multimodal and grounded tasks in this comparison, averaging 88.3 versus 82.5. Inside this category, AA-MMMU-Pro is the benchmark that creates the most daylight between them.

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