# Muse Spark 1.2 vs Beam

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

- Canonical page: https://benchlm.ai/compare/muse-spark-1-2-vs-reflection-beam
- Last updated: October 5, 2026

- Shared sourced benchmarks: 3
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Muse Spark 1.2 and Beam 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.
- Beam has the lower published output-token price.
- Muse Spark 1.2 has the larger published context window at 1M.

## Model Snapshot

| Property | Muse Spark 1.2 | Beam |
|----------|----------|----------|
| Creator | Meta | Reflection AI |
| Type | Proprietary | Pending |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | null |
| Independent public score (not head-to-head) | 66.42 | null |
| Benchmarks Covered | 8 | 16 |
| Pricing (input/output) | $1.25 / $4.25 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Muse Spark 1.2 public-lane score: 59 (Supported · #26/119)
- Beam public-lane score: Coming soon

| Benchmark | Muse Spark 1.2 | Beam | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 82.9% | 80.1% | Muse Spark 1.2 |
| Terminal-Bench 2.1 (Vals) | 69.7% | Coming soon | Coming soon |
| MCP Atlas | Coming soon | 78.7% | Coming soon |
| BrowseComp | Coming soon | 77.4% | Coming soon |
| DeepSearchQA | Coming soon | 80.1% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Muse Spark 1.2 public-lane score: 54.4 (Supported · #32/144)
- Beam public-lane score: Coming soon

| Benchmark | Muse Spark 1.2 | Beam | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 82.9% | 80.1% | Muse Spark 1.2 |
| DeepSWE | 59.3% | 44.4% | Muse Spark 1.2 |
| VulcanBench v3 | 87.0% | Coming soon | Coming soon |
| FrontierSWE v2 | 12.0% | Coming soon | Coming soon |
| SWE-bench (Vals) | 86.6% | Coming soon | Coming soon |
| SWE-bench Pro | Coming soon | 65.5% | Coming soon |
| SWE-Atlas Codebase QnA | Coming soon | 34.6% | 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: Insufficient shared evidence
- Muse Spark 1.2 public-lane score: 76.6 (Unranked · 2 rankable rows)
- Beam public-lane score: Coming soon

| Benchmark | Muse Spark 1.2 | Beam | Winner |
|-----------|-----------|-----------|--------|
| LongBench v2 | Coming soon | 65.5% | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Muse Spark 1.2 public-lane score: 64.2 (Supported · #30/171)
- Beam public-lane score: Coming soon

| Benchmark | Muse Spark 1.2 | Beam | Winner |
|-----------|-----------|-----------|--------|
| MMLU-Pro (Vals) | 88.3% | Coming soon | Coming soon |
| GPQA-D | Coming soon | 90.5% | Coming soon |
| HLE w/o tools | Coming soon | 36.2% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Muse Spark 1.2 public-lane score: Coming soon
- Beam public-lane score: Coming soon

| Benchmark | Muse Spark 1.2 | Beam | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 79.7% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Muse Spark 1.2 public-lane score: Coming soon
- Beam public-lane score: Coming soon

| Benchmark | Muse Spark 1.2 | Beam | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | Coming soon | 97.8% | Coming soon |

## FAQ

### Is there enough evidence to pick between Muse Spark 1.2 and Beam?

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

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

## Explore More

- [Muse Spark 1.2 profile](/models/muse-spark-1-2)
- [Beam profile](/models/reflection-beam)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)