# LongCat-2.5 vs Muse Spark

> Side-by-side benchmark comparison for LongCat-2.5 and Muse Spark across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/longcat-2-5-vs-muse-spark
- Last updated: November 9, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: LongCat-2.5 and Muse Spark share only 2 sourced benchmark rows.

## Summary

- Only 2 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- LongCat-2.5 has the larger published context window at 1M.

## Model Snapshot

| Property | LongCat-2.5 | Muse Spark |
|----------|----------|----------|
| Creator | Meituan | Meta |
| Type | Open Weight | Proprietary |
| Reasoning | Hybrid | Reasoning |
| Context | 1M | 262K |
| Independent public score (not head-to-head) | null | 59.97 |
| Benchmarks Covered | 22 | 25 |
| Pricing (input/output) | $0.30 / $1.20 | N/A |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- LongCat-2.5 public-lane score: Coming soon
- Muse Spark public-lane score: 50 (Supported · #53/132)

| Benchmark | LongCat-2.5 | Muse Spark | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 88.4% | Coming soon | Coming soon |
| Terminal-Bench 4.0 | 38.50% | Coming soon | Coming soon |
| BrowseComp | 91.9% | Coming soon | Coming soon |
| AutomationBench | 51.8% | Coming soon | Coming soon |
| HLE w/ tools | 63.1% | Coming soon | Coming soon |
| Agents' Last Exam | 38.5% | Coming soon | Coming soon |
| MCP Atlas | 83.1% | Coming soon | Coming soon |
| JobBench | 65.4% | Coming soon | Coming soon |
| skillsBench | 63.3% | Coming soon | Coming soon |
| SpreadsheetBench 2 | 34.9% | Coming soon | Coming soon |
| Claw-Eval | 78.3% | 63.8% | LongCat-2.5 |
| Terminal-Bench 2.0 | Coming soon | 59% | Coming soon |
| τ²-bench results | Coming soon | 91.5% | Coming soon |
| DeepSearchQA | Coming soon | 74.8% | Coming soon |
| CyberGym | Coming soon | 43.5% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- LongCat-2.5 public-lane score: Coming soon
- Muse Spark public-lane score: 50.1 (Supported · #48/158)

| Benchmark | LongCat-2.5 | Muse Spark | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 88.4% | Coming soon | Coming soon |
| ProgramBench | 25.5% | Coming soon | Coming soon |
| DeepSWE | 64.6% | Coming soon | Coming soon |
| PaperBench | 82.1% | Coming soon | Coming soon |
| SWE-Atlas Codebase QnA | 58.3% | Coming soon | Coming soon |
| NL2Repo | 60.5% | Coming soon | Coming soon |
| SWE-bench Verified | Coming soon | 77.4% | Coming soon |
| SWE-bench Pro | Coming soon | 52.4% | Coming soon |
| LiveCodeBench Pro | Coming soon | 80.0% | Coming soon |
| Vibe Code Bench | Coming soon | 19.67% | Coming soon |
| SWE-bench (Vals) | Coming soon | 74.4% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- LongCat-2.5 public-lane score: Coming soon
- Muse Spark public-lane score: 52.8 (Supported · #47/157)

| Benchmark | LongCat-2.5 | Muse Spark | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | Coming soon | 42.5% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- LongCat-2.5 public-lane score: Coming soon
- Muse Spark public-lane score: 61.5 (Estimated · #34/67)

| Benchmark | LongCat-2.5 | Muse Spark | Winner |
|-----------|-----------|-----------|--------|
| Vision2Web | 78.6% | Coming soon | Coming soon |
| CharXiv | 90.2% | 86.4% | LongCat-2.5 |
| MathVision w/ Python | 96.5% | Coming soon | Coming soon |
| Video-MME | 85.2% | 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 |
| ScreenSpot Pro | Coming soon | 84.1% | Coming soon |
| ZeroBench | Coming soon | 33.0% | Coming soon |
| MedXpertQA (MM) | Coming soon | 78.4% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- LongCat-2.5 public-lane score: Coming soon
- Muse Spark public-lane score: 61.6 (Supported · #43/179)

| Benchmark | LongCat-2.5 | Muse Spark | Winner |
|-----------|-----------|-----------|--------|
| FrontierScience | 77% | Coming soon | Coming soon |
| GPQA-D | Coming soon | 89.5% | Coming soon |
| HLE | Coming soon | 50.4% | Coming soon |
| HLE w/o tools | Coming soon | 42.8% | Coming soon |
| HealthBench Hard | Coming soon | 42.8% | Coming soon |
| MedXpertQA (Text) | Coming soon | 52.6% | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 89.6% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 87.3% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- LongCat-2.5 public-lane score: Coming soon
- Muse Spark public-lane score: 93.3 (#11/157)

## FAQ

### Is there enough evidence to pick between LongCat-2.5 and Muse Spark?

Not yet. The models share only 2 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

- [LongCat-2.5 vs Muse Spark 1.1](/compare/longcat-2-5-vs-muse-spark-1-1)
- [Muse Spark vs Muse Spark 1.1](/compare/muse-spark-vs-muse-spark-1-1)
- [LongCat-2.5 vs Muse Spark 1.2](/compare/longcat-2-5-vs-muse-spark-1-2)
- [Muse Spark vs Muse Spark 1.2](/compare/muse-spark-vs-muse-spark-1-2)

## Explore More

- [LongCat-2.5 profile](/models/longcat-2-5)
- [Muse Spark profile](/models/muse-spark)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)