# Claude Sonnet 4.6 vs Muse Spark 1.2

> Side-by-side benchmark comparison for Claude Sonnet 4.6 and Muse Spark 1.2 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-sonnet-4-6-vs-muse-spark-1-2
- Last updated: September 18, 2026

- Shared sourced benchmarks: 3
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude Sonnet 4.6 and Muse Spark 1.2 share only 3 sourced benchmark rows.

## Summary

- Only 3 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Muse Spark 1.2 has the lower published output-token price.
- Muse Spark 1.2 has the larger published context window at 1M.

## Model Snapshot

| Property | Claude Sonnet 4.6 | Muse Spark 1.2 |
|----------|----------|----------|
| Creator | Anthropic | Meta |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 200K | 1M |
| Independent public score (not head-to-head) | 62.86 | 70.28 |
| Benchmarks Covered | 26 | 8 |
| Pricing (input/output) | $3.00 / $15.00 | $1.25 / $4.25 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude Sonnet 4.6 public-lane score: 43.8 (Supported · #95/154)
- Muse Spark 1.2 public-lane score: 61 (Supported · #16/154)

| Benchmark | Claude Sonnet 4.6 | Muse Spark 1.2 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 59.1% | Coming soon | Coming soon |
| OSWorld-Verified | 72.1% | Coming soon | Coming soon |
| Claw-Eval | 67.8% | Coming soon | Coming soon |
| CyberGym | 65.2% | Coming soon | Coming soon |
| Gert Labs | 62.92% | Coming soon | Coming soon |
| OSWorld 2.0 | 8.3% | Coming soon | Coming soon |
| JobBench | 36.9% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 57.3% | 69.7% | Muse Spark 1.2 |
| ApprenticeBench | 2% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | Coming soon | 82.9% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude Sonnet 4.6 public-lane score: 52.2 (Supported · #49/154)
- Muse Spark 1.2 public-lane score: 60 (Supported · #21/154)

| Benchmark | Claude Sonnet 4.6 | Muse Spark 1.2 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 79.6% | Coming soon | Coming soon |
| SWE-Rebench | 60.7% | Coming soon | Coming soon |
| React Native Evals | 80.6% | Coming soon | Coming soon |
| Vibe Code Bench | 51.48% | Coming soon | Coming soon |
| cursorBench31 | 48.8% | Coming soon | Coming soon |
| FrontierCode 1.1 Main | 24.3% | Coming soon | Coming soon |
| LiveCodeBench (Vals) | 82.1% | Coming soon | Coming soon |
| SWE-bench (Vals) | 77.4% | 86.6% | Muse Spark 1.2 |
| Terminal-Bench 2.1 | Coming soon | 82.9% | Coming soon |
| DeepSWE | Coming soon | 59.3% | Coming soon |
| VulcanBench v3 | Coming soon | 87.0% | Coming soon |
| FrontierSWE v2 | Coming soon | 12.0% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Claude Sonnet 4.6 public-lane score: 54.1 (#33/48)
- Muse Spark 1.2 public-lane score: Coming soon

| Benchmark | Claude Sonnet 4.6 | Muse Spark 1.2 | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | 77.4% | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude Sonnet 4.6 public-lane score: 67.9 (Unranked · 2 rankable rows)
- Muse Spark 1.2 public-lane score: 75.3 (Unranked · 2 rankable rows)

### Knowledge

- Winner: Insufficient shared evidence
- Claude Sonnet 4.6 public-lane score: 55.7 (Supported · #51/184)
- Muse Spark 1.2 public-lane score: 70.7 (Estimated · #10/184)

| Benchmark | Claude Sonnet 4.6 | Muse Spark 1.2 | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 89.9% | Coming soon | Coming soon |
| SuperGPQA | 95% | Coming soon | Coming soon |
| MMLU-Pro | 79.2% | Coming soon | Coming soon |
| HLE | 49% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 85.6% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 87.3% | 88.3% | Muse Spark 1.2 |

### Instruction Following

- Winner: Insufficient shared evidence
- Claude Sonnet 4.6 public-lane score: 46.6 (#88/124)
- Muse Spark 1.2 public-lane score: Coming soon

### Mathematics

- Winner: Insufficient shared evidence
- Claude Sonnet 4.6 public-lane score: 48.8 (Unranked · 2 rankable rows)
- Muse Spark 1.2 public-lane score: Coming soon

| Benchmark | Claude Sonnet 4.6 | Muse Spark 1.2 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 32.400% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 8.300% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between Claude Sonnet 4.6 and Muse Spark 1.2?

Not yet. The models share only 3 sourced benchmark rows, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Claude Sonnet 4.6 vs Muse Spark 1.1](/compare/claude-sonnet-4-6-vs-muse-spark-1-1)
- [Muse Spark 1.2 vs Muse Spark 1.1](/compare/muse-spark-1-1-vs-muse-spark-1-2)
- [Claude Sonnet 4.6 vs Muse Spark](/compare/claude-sonnet-4-6-vs-muse-spark)
- [Muse Spark 1.2 vs Muse Spark](/compare/muse-spark-vs-muse-spark-1-2)

## Explore More

- [Claude Sonnet 4.6 profile](/models/claude-sonnet-4-6)
- [Muse Spark 1.2 profile](/models/muse-spark-1-2)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)