# Muse Spark 1.3 vs Beam 1.0 501B-A23B FP8

> Side-by-side benchmark comparison for Muse Spark 1.3 and Beam 1.0 501B-A23B FP8 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/muse-spark-1-3-vs-reflection-beam-fp8
- Last updated: October 16, 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 1.0 501B-A23B FP8 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 73 to 71.
- The clearest category separation is in mathematics, where the averages are 78.5 for Muse Spark 1.3 and 87.9 for Beam 1.0 501B-A23B FP8.
- The biggest single benchmark swing is DeepSWE in Coding, with scores of 75.4% and 43.0%.
- Beam 1.0 501B-A23B FP8 is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Muse Spark 1.3 | Beam 1.0 501B-A23B FP8 |
|----------|----------|----------|
| Creator | Meta | Reflection AI |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 1M |
| Overall Score | null | null |
| Benchmarks Covered | 20 | 19 |
| 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 1.0 501B-A23B FP8 public-lane score: Coming soon

| Benchmark | Muse Spark 1.3 | Beam 1.0 501B-A23B FP8 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 88.8% | 78.9% | Muse Spark 1.3 |
| JobBench | 64.9% | Coming soon | Coming soon |
| OSWorld 2.0 | 66.9% | Coming soon | Coming soon |
| DeepSearchQA | 89.4% | 79.6% | 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 |
| MazeBench | 0% | Coming soon | Coming soon |
| τ³-bench results | Coming soon | 36.8% | Coming soon |
| HLE w/ tools | Coming soon | 51.1% | Coming soon |
| MCP Atlas | Coming soon | 81.5% | Coming soon |
| BrowseComp | Coming soon | 76.7% | Coming soon |

### Coding

- Winner: Not comparable
- Muse Spark 1.3 public-lane score: Coming soon
- Beam 1.0 501B-A23B FP8 public-lane score: Coming soon

| Benchmark | Muse Spark 1.3 | Beam 1.0 501B-A23B FP8 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 88.8% | 78.9% | Muse Spark 1.3 |
| DeepSWE | 75.4% | 43.0% | Muse Spark 1.3 |
| SWE-Atlas Codebase QnA | 59.4% | 32.2% | Muse Spark 1.3 |
| CursorBench 4.0 | 41.6% | Coming soon | Coming soon |
| Bug Hunt Bench | 32.2 fixes | Coming soon | Coming soon |
| FrontierSWE v2 | 25.8% | Coming soon | Coming soon |
| SWE-bench Pro | Coming soon | 65.9% | Coming soon |
| SWE Multilingual | Coming soon | 78.1% | Coming soon |
| SWE-bench Verified | Coming soon | 80.2% | Coming soon |
| SciCode | Coming soon | 48.3% | Coming soon |

### Reasoning

- Winner: Not comparable
- Muse Spark 1.3 public-lane score: 82.9 (#6/28)
- Beam 1.0 501B-A23B FP8 public-lane score: 85.8 (Unranked · 3 rankable rows)

| Benchmark | Muse Spark 1.3 | Beam 1.0 501B-A23B FP8 | Winner |
|-----------|-----------|-----------|--------|
| MRCR v2 256K-512K | 98.5% | Coming soon | Coming soon |
| MRCR v2 512K-1M | 98.1% | Coming soon | Coming soon |
| CritPt | Coming soon | 17.4% | Coming soon |
| LongBench v2 | Coming soon | 67.6% | Coming soon |

### Knowledge

- Winner: Not comparable
- Muse Spark 1.3 public-lane score: Coming soon
- Beam 1.0 501B-A23B FP8 public-lane score: Coming soon

| Benchmark | Muse Spark 1.3 | Beam 1.0 501B-A23B FP8 | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | Coming soon | 90.3% | Coming soon |
| HLE w/o tools | Coming soon | 36% | Coming soon |

### Instruction Following

- Winner: Not comparable
- Muse Spark 1.3 public-lane score: Coming soon
- Beam 1.0 501B-A23B FP8 public-lane score: 89.8 (#28/148)

| Benchmark | Muse Spark 1.3 | Beam 1.0 501B-A23B FP8 | Winner |
|-----------|-----------|-----------|--------|
| Gray Swan IPI (15 attempts) | 15.9% | Coming soon | Coming soon |
| IFBench | Coming soon | 80.7% | Coming soon |

### Mathematics

- Winner: Not comparable
- Muse Spark 1.3 public-lane score: 78.5 (Unranked · 2 rankable rows)
- Beam 1.0 501B-A23B FP8 public-lane score: 87.9 (Unranked · 1 rankable row)

| Benchmark | Muse Spark 1.3 | Beam 1.0 501B-A23B FP8 | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | 74.035% | Coming soon | Coming soon |
| FrontierMath v2 (Tier 4) | 46.341% | Coming soon | Coming soon |
| AIME26 | Coming soon | 98.0% | Coming soon |

## FAQ

### Which is better overall, Muse Spark 1.3 or Beam 1.0 501B-A23B FP8?

Muse Spark 1.3 is ahead overall on BenchLM right now.

### Where is the biggest gap between Muse Spark 1.3 and Beam 1.0 501B-A23B FP8?

The widest category gap is in mathematics, where the averages are 78.5 for Muse Spark 1.3 and 87.9 for Beam 1.0 501B-A23B FP8.

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

Muse Spark 1.3 currently has 20 sourced benchmark scores on BenchLM.

### How many benchmarks does Beam 1.0 501B-A23B FP8 cover on BenchLM?

Beam 1.0 501B-A23B FP8 currently has 19 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Muse Spark 1.3 vs Muse Spark 1.1](/compare/muse-spark-1-1-vs-muse-spark-1-3)
- [Beam 1.0 501B-A23B FP8 vs Muse Spark 1.1](/compare/muse-spark-1-1-vs-reflection-beam-fp8)
- [Muse Spark 1.3 vs Muse Spark 1.2](/compare/muse-spark-1-2-vs-muse-spark-1-3)
- [Beam 1.0 501B-A23B FP8 vs Muse Spark 1.2](/compare/muse-spark-1-2-vs-reflection-beam-fp8)

## Explore More

- [Muse Spark 1.3 profile](/models/muse-spark-1-3)
- [Beam 1.0 501B-A23B FP8 profile](/models/reflection-beam-fp8)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)