# Claude Opus 4.8 vs Muse Spark

> Side-by-side benchmark comparison for Claude Opus 4.8 and Muse Spark across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-opus-4-8-vs-muse-spark
- Last updated: October 10, 2026

- Shared sourced benchmarks: 14
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Pick Claude Opus 4.8 if you want the stronger benchmark profile. Muse Spark only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Claude Opus 4.8 leads overall 69.12 to 60.
- The clearest category separation is in instruction following, where the averages are 75.4 for Claude Opus 4.8 and 93.3 for Muse Spark.
- The biggest single benchmark swing is ARC-AGI-2 in Reasoning, with scores of 72.1% and 42.5%.
- Claude Opus 4.8 also has the larger context window at 1M.

## Model Snapshot

| Property | Claude Opus 4.8 | Muse Spark |
|----------|----------|----------|
| Creator | Anthropic | Meta |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 262K |
| Overall Score | 69.12 | 60 |
| Benchmarks Covered | 40 | 27 |
| Pricing (input/output) | $5.00 / $25.00 | N/A |

## Category Breakdown

### Agentic

- Winner: Claude Opus 4.8
- Claude Opus 4.8 public-lane score: 61.6 (Supported · #20/123)
- Muse Spark public-lane score: 50.2 (Supported · #44/123)

| Benchmark | Claude Opus 4.8 | Muse Spark | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 3.0 | 21.1% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 74.6% | Coming soon | Coming soon |
| BrowseComp | 84.3% | Coming soon | Coming soon |
| DeepSearchQA | 93.1% | 74.8% | Claude Opus 4.8 |
| OSWorld-Verified | 83.4% | Coming soon | Coming soon |
| Finance Agent v2 | 53.9% | Coming soon | Coming soon |
| MCP Atlas | 82.2% | Coming soon | Coming soon |
| Toolathlon | 59.9% | Coming soon | Coming soon |
| Gert Labs | 72.97% | Coming soon | Coming soon |
| ResearchClawBench | 21.1% | Coming soon | Coming soon |
| OSWorld 2.0 | 20.6% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 71.9% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 59% | Coming soon |
| τ²-bench results | Coming soon | 91.5% | Coming soon |
| CyberGym | Coming soon | 43.5% | Coming soon |
| Claw-Eval | Coming soon | 63.8% | Coming soon |

### Coding

- Winner: Claude Opus 4.8
- Claude Opus 4.8 public-lane score: 60.8 (Supported · #19/146)
- Muse Spark public-lane score: 50.4 (Supported · #40/146)

| Benchmark | Claude Opus 4.8 | Muse Spark | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 88.6% | 77.4% | Claude Opus 4.8 |
| SWE-bench Pro | 69.2% | 52.4% | Claude Opus 4.8 |
| SWE Multilingual | 84.4% | Coming soon | Coming soon |
| SWE Multimodal | 38.4% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 74.6% | Coming soon | Coming soon |
| cursorBench31 | 58.4% | Coming soon | Coming soon |
| CursorBench 3.2 | 62.3% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | 46.5% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 87.8% | Coming soon | Coming soon |
| SWE-bench (Vals) | 88.6% | 74.4% | Claude Opus 4.8 |
| PostTrainBench v1.1 | 32.9% | Coming soon | Coming soon |
| LiveCodeBench Pro | Coming soon | 80.0% | Coming soon |
| Vibe Code Bench | Coming soon | 19.67% | Coming soon |

### Reasoning

- Winner: Not comparable
- Claude Opus 4.8 public-lane score: 62.9 (#24/28)
- Muse Spark public-lane score: 57.2 (Unranked · 3 rankable rows)

| Benchmark | Claude Opus 4.8 | Muse Spark | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 72.1% | 42.5% | Claude Opus 4.8 |
| ARC-AGI-3 | 1.5% | Coming soon | Coming soon |
| ARC-AGI-1 | 92.50% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Directional only
- Claude Opus 4.8 public-lane score: 91.2 (#5/54)
- Muse Spark public-lane score: 84.4 (#12/54)

| Benchmark | Claude Opus 4.8 | Muse Spark | Winner |
|-----------|-----------|-----------|--------|
| OfficeQA Pro | 66.2% | Coming soon | Coming soon |
| ScreenSpot Pro | 87.9% | 84.1% | Claude Opus 4.8 |
| CharXiv | 89.9% | 86.4% | Claude Opus 4.8 |
| CharXiv w/o tools | 80.5% | Coming soon | Coming soon |
| MMMU-Pro | Coming soon | 80.4% | Coming soon |
| ERQA | Coming soon | 64.7% | Coming soon |
| SimpleVQA | Coming soon | 71.3% | Coming soon |
| ZeroBench | Coming soon | 33.0% | Coming soon |
| MedXpertQA (MM) | Coming soon | 78.4% | Coming soon |

### Knowledge

- Winner: Claude Opus 4.8
- Claude Opus 4.8 public-lane score: 70.7 (Supported · #14/177)
- Muse Spark public-lane score: 61.8 (Supported · #41/177)

| Benchmark | Claude Opus 4.8 | Muse Spark | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 93.6% | Coming soon | Coming soon |
| GPQA-D | 93.6% | 89.5% | Claude Opus 4.8 |
| HLE | 57.9% | 50.4% | Claude Opus 4.8 |
| HLE w/o tools | 49.8% | 42.8% | Claude Opus 4.8 |
| GPQA Diamond (Vals) | 92.4% | 89.6% | Claude Opus 4.8 |
| MMLU-Pro (Vals) | 89.6% | 87.3% | Claude Opus 4.8 |
| HealthBench Hard | Coming soon | 42.8% | Coming soon |
| MedXpertQA (Text) | Coming soon | 52.6% | Coming soon |

### Multilingual

- Winner: Not comparable
- Claude Opus 4.8 public-lane score: Coming soon
- Muse Spark public-lane score: Coming soon

| Benchmark | Claude Opus 4.8 | Muse Spark | Winner |
|-----------|-----------|-----------|--------|
| INCLUDE | 87.6% | Coming soon | Coming soon |

### Instruction Following

- Winner: Directional only
- Claude Opus 4.8 public-lane score: 75.4 (#61/127)
- Muse Spark public-lane score: 93.3 (#10/127)

### Mathematics

- Winner: Not comparable
- Claude Opus 4.8 public-lane score: 65.7 (#2/7)
- Muse Spark public-lane score: 55.6 (Unranked · 2 rankable rows)

| Benchmark | Claude Opus 4.8 | Muse Spark | Winner |
|-----------|-----------|-----------|--------|
| USAMO 2026 | 96.7% | Coming soon | Coming soon |
| FrontierMath v2 (Tiers 1-3) | 47.241% | 39.000% | Claude Opus 4.8 |
| FrontierMath v2 (Tier 4) | 31.250% | 14.600% | Claude Opus 4.8 |

## FAQ

### Which is better overall, Claude Opus 4.8 or Muse Spark?

Claude Opus 4.8 is ahead overall on BenchLM right now.

### Where is the biggest gap between Claude Opus 4.8 and Muse Spark?

The widest category gap is in instruction following, where the averages are 75.4 for Claude Opus 4.8 and 93.3 for Muse Spark.

### How many benchmarks does Claude Opus 4.8 cover on BenchLM?

Claude Opus 4.8 currently has 40 sourced benchmark scores on BenchLM.

### How many benchmarks does Muse Spark cover on BenchLM?

Muse Spark currently has 27 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Claude Opus 4.8 vs Muse Spark 1.2](/compare/claude-opus-4-8-vs-muse-spark-1-2)
- [Muse Spark vs Muse Spark 1.2](/compare/muse-spark-vs-muse-spark-1-2)
- [Claude Opus 4.8 vs Muse Spark 1.1](/compare/claude-opus-4-8-vs-muse-spark-1-1)
- [Muse Spark vs Muse Spark 1.1](/compare/muse-spark-vs-muse-spark-1-1)

## Explore More

- [Claude Opus 4.8 profile](/models/claude-opus-4-8)
- [Muse Spark profile](/models/muse-spark)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)