Compare · ModelsLive · 2 picked · head to head
Claude Opus 5.5 vs Muse Spark
Side by side · benchmarks, pricing, and signals you can act on.
Winner summary
Claude Opus 5.5 wins on 5/5 benchmarks
Claude Opus 5.5 wins 5 of 5 shared benchmarks. Leads in speed · knowledge · math.
Category leads
speed·Claude Opus 5.5knowledge·Claude Opus 5.5math·Claude Opus 5.5general·Claude Opus 5.5
Hype vs Reality
Attention vs performance
Claude Opus 5.5
#12 by perf·#7 by attention
Muse Spark
#79 by perf·no signal
Vendor risk
Who is behind the model
Anthropic
$965.0B·Tier 1
Meta AI
$1.79T·Tier 1
Head to head
5 benchmarks · 2 models
Claude Opus 5.5Muse Spark
Artificial Analysis · Quality Index
Claude Opus 5.5 leads by +14.6
Claude Opus 5.5
57.6
Muse Spark
43.1
GPQA diamond
Claude Opus 5.5 leads by +1.1
Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs.
Claude Opus 5.5
87.5
Muse Spark
86.4
OTIS Mock AIME 2024-2025
Claude Opus 5.5 leads by +11.1
OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills.
Claude Opus 5.5
100.0
Muse Spark
88.9
Proofbench
Claude Opus 5.5 leads by +83.0
Claude Opus 5.5
100.0
Muse Spark
17.0
SimpleQA Verified
Claude Opus 5.5 leads by +5.9
SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information.
Claude Opus 5.5
72.2
Muse Spark
66.3
Full benchmark table
| Benchmark | Claude Opus 5.5 | Muse Spark |
|---|---|---|
Artificial Analysis · Quality Index | 57.6 | 43.1 |
GPQA diamond Graduate-Level Google-Proof QA (Diamond set) · expert-crafted questions in physics, biology, and chemistry that are difficult even for domain PhDs. | 87.5 | 86.4 |
OTIS Mock AIME 2024-2025 OTIS Mock AIME 2024-2025 · simulated American Invitational Mathematics Examination problems testing advanced problem-solving skills. | 100.0 | 88.9 |
Proofbench | 100.0 | 17.0 |
SimpleQA Verified SimpleQA Verified · short factual questions with verified answers, measuring factual accuracy and the tendency to hallucinate or provide incorrect information. | 72.2 | 66.3 |
Pricing · per 1M tokens · projected $/mo at 10M tokens
| Model | Input | Output | Context | Projected $/mo |
|---|---|---|---|---|
| $4.00 | $20.00 | 1.0M tokens (~500 books) | $80.00 | |
| — | — | — | — |
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