Compare / head-to-head
Claude Sonnet 4.5vs
Muse Spark
Muse Spark leads 7 of 7 shared benchmarks.
Benchmarks from cited public sources; pricing from official pages; status from official provider feeds.
Shared benchmarks
0 – 7
Muse Spark leads
Cheaper per token
—
list price, input + output
Larger context
—
both 200K tokens
Providers
2 providers
Anthropic · Meta
Claude Sonnet 4.5
Anthropic · released 2025-09-29
textvision
Muse Spark
Meta · released 2026-04-08
textvision
- Context
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- Max out
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- Input /1M
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- Output /1M
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- Cached /1M
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- Scores
- 19 · 8 core
Quality
Benchmark matrix
7 shared · 29 only Claude Sonnet 4.5 · 11 only Muse Spark| Benchmark | Claude Sonnet 4.5 | Muse Spark | Δ | Edge |
|---|---|---|---|---|
| Reported by both · 7 | ||||
| SWE-bench Verified | 77.2% ↗ | 77.4% ↗ | -0.2 pt | Muse Spark |
| GPQA Diamond | 83.4% ↗ | 89.5% ↗ | -6.1 pt | Muse Spark |
| Humanity's Last Exam (no tools) | 17.7% ↗ | 42.8% ↗ | -25.1 pt | Muse Spark |
| LMArena Elo | 1456.6 ↗ | 1489.3 ↗ | -32.7 | Muse Spark |
| Humanity's Last Exam (with tools) | 33.6% ↗ | 50.4% ↗ | -16.8 pt | Muse Spark |
| OTIS Mock AIME 2024-2025 (Epoch AI run) | 77.8% ↗epoch run | 88.9% ↗epoch run | -11.1 pt | Muse Spark |
| Terminal-Bench 2.0 | 51% ↗ | 59% ↗ | -8 pt | Muse Spark |
| Only Claude Sonnet 4.5 reports · 29 | ||||
| AIME 2025 | 84.2% ↗matharena ⚠ | not reported | — | — |
| ARC-AGI-2 (Verified) | 13.6% ↗ | not reported | — | — |
| Chess Puzzles (Epoch AI run) | 12% ↗epoch run | not reported | — | — |
| EBR-bench (Epoch AI run) | 2.4% ↗epoch run | not reported | — | — |
| FrontierMath Tier 4 v2 (Epoch AI run) | 2.4% ↗epoch run | not reported | — | — |
| FrontierMath Tiers 1-3 v2 (Epoch AI run) | 23.9% ↗epoch run | not reported | — | — |
| GDPval-AA | 1276 ↗ | not reported | — | — |
| GSO Opt@1 (GSO) | 12.7% ↗ | not reported | — | — |
| LMArena WebDev (LMArena) | 1393 ↗ | not reported | — | — |
| MATH Level 5 (Epoch AI run) | 97.7% ↗epoch run | not reported | — | — |
| MCP Atlas | 43.8% ↗ | not reported | — | — |
| MMMLU | 89.5% ↗ | not reported | — | — |
| MMMU-Pro (no tools) | 63.4% ↗ | not reported | — | — |
| MMMU-Pro (with tools) | 68.9% ↗ | not reported | — | — |
| Mystery Game Puzzles (Epoch AI run) | 17% ↗epoch run | not reported | — | — |
| OSWorld-Verified | 61.4% ↗ | not reported | — | — |
| OSWorld-Verified (XLANG) | 62.9% ↗ | not reported | — | — |
| SAGE (Vals AI) | 36.1% ↗ | not reported | — | — |
| SimpleBench (SimpleBench) | 54.3% ↗ | not reported | — | — |
| SimpleQA Verified | 30.7% ↗epoch run | not reported | — | — |
| SWE-bench Verified (Epoch AI run) | 71.3% ↗epoch run | not reported | — | — |
| tau2-bench Airline (Sierra) | 72% ↗ | not reported | — | — |
| tau2-bench Banking Knowledge (Sierra) | 25.3% ↗ | not reported | — | — |
| Tau2-bench Retail | 86.2% ↗ | not reported | — | — |
| tau2-bench Retail (Sierra) | 72.4% ↗ | not reported | — | — |
| Tau2-bench Telecom | 98% ↗ | not reported | — | — |
| tau2-bench Telecom (Sierra) | 84.9% ↗ | not reported | — | — |
| Vending-Bench 2 (Andon Labs) | 3838.74 ↗ | not reported | — | — |
| WeirdML (Håvard Tveit Ihle) | 47.7% ↗ | not reported | — | — |
| Only Muse Spark reports · 11 | ||||
| ARC AGI 2 (Public) | not reported | 42.5% ↗ | — | — |
| CharXiv Reasoning | not reported | 86.4% ↗ | — | — |
| DeepSearchQA | not reported | 74.8% ↗ | — | — |
| HealthBench Hard | not reported | 42.8% ↗ | — | — |
| LiveCodeBench Pro | not reported | 80% ↗ | — | — |
| LMArena Vision (LMArena) | not reported | 1293.6 ↗ | — | — |
| MedXpertQA (MM) | not reported | 78.4% ↗ | — | — |
| MMMU Pro | not reported | 80.4% ↗ | — | — |
| ScreenSpot Pro (With Python) | not reported | 84.1% ↗ | — | — |
| SimpleVQA | not reported | 71.3% ↗ | — | — |
| SWE-Bench Pro | not reported | 52.4% ↗ | — | — |
Scores tagged "epoch" or "matharena" are independent runs, used only where the lab has not published its own; ⚠ marks rows MathArena flags as released after the competition. Higher is better on every row. Δ is Claude Sonnet 4.5 minus Muse Spark in the benchmark's own unit. "Not reported" means the lab has not published that figure; it is not a zero. ↗ opens the source.
Specs & pricing
Side by side
Official pricing pages and model cards| Spec | Claude Sonnet 4.5 | Muse Spark | Edge |
|---|---|---|---|
| Context window | 200K tokens | — | — |
| Max output | 64K tokens | — | — |
| Input price / 1M | $3 ↗ | — | — |
| Output price / 1M | $15 ↗ | — | — |
| Cached input / 1M | $0.3 ↗ | — | — |
| Input + output / 1M Lower is cheaper. List prices; batch, tool and regional fees excluded. | $18 | — | — |
| Modalities | text · vision | text · vision | Tie |
| Released | 2025-09-29 | 2026-04-08 | — |
| Cited benchmark scores | 43 | 19 | — |
Reliability
Provider status
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Which one wins on your data?
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