Benchmark scores
Higher is better for all benchmark scores (SWE-bench, GPQA, HLE, Terminal-Bench, etc.). Green marks the model with the higher score.
LLM Comparison
Claude Opus 5.5 vs Muse Spark Open: benchmark scores, pricing & comparison.
Side-by-side Claude Opus 5.5 vs Muse Spark Open comparison across SWE-bench, GPQA, HLE, Terminal-Bench, coding agent scores, token pricing, context window, and AskClash RWT. Green marks the winner on each benchmark.
Verdict: Claude Opus 5.5 ranks higher (#1 vs #27) and wins 3 of 3 shared benchmarks.
Rank #1 vs #27AskClash overall scores 80.0 vs 56.9.
Pricing $4.00/$20.0 vs —/—Input and output token prices per 1M tokens when published.
Proprietary vs Open WeightAnthropic vs Meta.
Claude Opus 5.5 vs Muse Spark Open benchmark comparison
Green cells highlight the winning model for each metric. Scores are cached from the AskClash LLM leaderboard snapshot.
| Metric | Claude Opus 5.5 | Muse Spark Open |
|---|---|---|
| Overall Score | 80.0 | 56.9 |
| Leaderboard Rank | #1 | #27 |
| ACB | 76.5 | — |
| RWT | — | 7.5 |
| HLE | 67.7 | 43.9 |
| GPQA | — | 89.0 |
| SWE-Pro | 89.9 | — |
| Terminal-Bench | 59.6 | — |
| DeepSWE | 74.2 | — |
| GDPval-AA | 1846.2 | 1401.1 |
| MCP Atlas | — | 89.2 |
| Finance Agent | 58.6 | — |
| MMMU-Pro | 87.7 | 80.9 |
| ARC-AGI 2 | 91.7 | — |
| Input Price (per 1M tokens) | $4.00 | — |
| Output Price (per 1M tokens) | $20.0 | — |
| Context Window | 1M | 1M |
| Benchmarks Published | 12 | 8 |
Claude Opus 5.5 vs Muse Spark Open head-to-head charts
Claude Opus 5.5 leads 4 and Muse Spark Open leads 0 of 4 shared benchmarks. Charts show only benchmarks both models publish.
Claude Opus 5.5Muse Spark Open
Overall
HLE
GDPval-AA
MMMU-Pro
Claude Opus 5.5
Input$4.00
Output$20.0
Workload$8.00
Context1M
Muse Spark Open
Input—
Output—
Workload—
Context1M
Workload = published cost of 1M input + 200K output tokens. Open the live leaderboard for interactive compare charts.
More Claude Opus 5.5 and Muse Spark Open comparisons
Explore how Claude Opus 5.5 and Muse Spark Open stack up against other top-ranked LLMs.
Claude Opus 5.5 vs Claude Fable 5.1Claude Fable 5.1 vs Muse Spark OpenClaude Opus 5.5 vs Claude Sonnet 5.5Claude Sonnet 5.5 vs Muse Spark OpenClaude Opus 5.5 vs Claude Opus 5Claude Opus 5 vs Muse Spark OpenClaude Opus 5.5 vs Claude Fable 5Claude Fable 5 vs Muse Spark OpenClaude Opus 5.5 vs Gemini 4 ArgonGemini 4 Argon vs Muse Spark Open
How to read this comparison
Token pricing
Lower is better for input and output prices. Green marks the cheaper model per 1M tokens.
Coverage matters
Models with fewer disclosed benchmark cells may have inflated percentile scores. Check the benchmark cell count for context.
This comparison page is generated from the AskClash LLM leaderboard cache. Open the live leaderboard for real-time scores and interactive filtering.