# Muse Spark 1.3 vs Beam

> Side-by-side benchmark comparison for Muse Spark 1.3 and Beam across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/muse-spark-1-3-vs-reflection-beam
- Last updated: October 5, 2026

- Shared sourced benchmarks: 5
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Pick Muse Spark 1.3 if you want the stronger benchmark profile. Beam only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Muse Spark 1.3 leads overall 71 to 0.
- The biggest single benchmark swing is DeepSWE in Coding, with scores of 75.4% and 44.4%.
- Beam is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.
- Muse Spark 1.3 also has the larger context window at 1M.

## Model Snapshot

| Property | Muse Spark 1.3 | Beam |
|----------|----------|----------|
| Creator | Meta | Reflection AI |
| Type | Proprietary | Pending |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | null |
| Overall Score | null | null |
| Benchmarks Covered | 15 | 16 |
| Pricing (input/output) | $1.25 / $4.25 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Not comparable
- Muse Spark 1.3 public-lane score: Coming soon
- Beam public-lane score: Coming soon

| Benchmark | Muse Spark 1.3 | Beam | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 88.8% | 80.1% | Muse Spark 1.3 |
| JobBench | 64.9% | Coming soon | Coming soon |
| OSWorld 2.0 | 66.9% | Coming soon | Coming soon |
| DeepSearchQA | 89.4% | 80.1% | Muse Spark 1.3 |
| AutomationBench | 49.4% | Coming soon | Coming soon |
| ApprenticeBench | 19% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 72.3% | Coming soon | Coming soon |
| CWE-bench v1 | 55.0% | Coming soon | Coming soon |
| MCP Atlas | Coming soon | 78.7% | Coming soon |
| BrowseComp | Coming soon | 77.4% | Coming soon |

### Coding

- Winner: Not comparable
- Muse Spark 1.3 public-lane score: Coming soon
- Beam public-lane score: Coming soon

| Benchmark | Muse Spark 1.3 | Beam | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 88.8% | 80.1% | Muse Spark 1.3 |
| DeepSWE | 75.4% | 44.4% | Muse Spark 1.3 |
| SWE-Atlas Codebase QnA | 59.4% | 34.6% | Muse Spark 1.3 |
| CursorBench 4.0 | 41.6% | Coming soon | Coming soon |
| SWE-bench Pro | Coming soon | 65.5% | Coming soon |
| SWE Multilingual | Coming soon | 78% | Coming soon |
| SWE-bench Verified | Coming soon | 80.9% | Coming soon |
| SciCode | Coming soon | 49.7% | Coming soon |

### Reasoning

- Winner: Not comparable
- Muse Spark 1.3 public-lane score: 79.4 (#6/27)
- Beam public-lane score: Coming soon

| Benchmark | Muse Spark 1.3 | Beam | Winner |
|-----------|-----------|-----------|--------|
| MRCR v2 256K-512K | 98.5% | Coming soon | Coming soon |
| MRCR v2 512K-1M | 98.1% | Coming soon | Coming soon |
| LongBench v2 | Coming soon | 65.5% | Coming soon |

### Knowledge

- Winner: Not comparable
- Muse Spark 1.3 public-lane score: Coming soon
- Beam public-lane score: Coming soon

| Benchmark | Muse Spark 1.3 | Beam | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | Coming soon | 90.5% | Coming soon |
| HLE w/o tools | Coming soon | 36.2% | Coming soon |

### Instruction Following

- Winner: Not comparable
- Muse Spark 1.3 public-lane score: Coming soon
- Beam public-lane score: Coming soon

| Benchmark | Muse Spark 1.3 | Beam | Winner |
|-----------|-----------|-----------|--------|
| Gray Swan IPI (15 attempts) | 15.9% | Coming soon | Coming soon |
| IFBench | Coming soon | 79.7% | Coming soon |

### Mathematics

- Winner: Not comparable
- Muse Spark 1.3 public-lane score: Coming soon
- Beam public-lane score: Coming soon

| Benchmark | Muse Spark 1.3 | Beam | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | Coming soon | 97.8% | Coming soon |

## FAQ

### Which is better overall, Muse Spark 1.3 or Beam?

Muse Spark 1.3 is ahead overall on BenchLM right now.

### How many benchmarks does Muse Spark 1.3 cover on BenchLM?

Muse Spark 1.3 currently has 15 sourced benchmark scores on BenchLM.

### How many benchmarks does Beam cover on BenchLM?

Beam currently has 16 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Muse Spark 1.3 vs Muse Spark 1.2](/compare/muse-spark-1-2-vs-muse-spark-1-3)
- [Beam vs Muse Spark 1.2](/compare/muse-spark-1-2-vs-reflection-beam)
- [Muse Spark 1.3 vs Muse Spark 1.1](/compare/muse-spark-1-1-vs-muse-spark-1-3)
- [Beam vs Muse Spark 1.1](/compare/muse-spark-1-1-vs-reflection-beam)

## Explore More

- [Muse Spark 1.3 profile](/models/muse-spark-1-3)
- [Beam profile](/models/reflection-beam)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)