# Muse Spark Open vs Sage-A1.5

> Side-by-side benchmark comparison for Muse Spark Open and Sage-A1.5 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/muse-spark-open-vs-sage-a1-5
- Last updated: October 20, 2026

- Shared sourced benchmarks: 1
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Muse Spark Open and Sage-A1.5 share only 1 sourced benchmark row.

## Summary

- Only 1 shared sourced benchmark row is available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Sage-A1.5 has the lower published output-token price.
- Muse Spark Open has the larger published context window at 1M.

## Model Snapshot

| Property | Muse Spark Open | Sage-A1.5 |
|----------|----------|----------|
| Creator | Meta | InternScience |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 262K |
| Independent public score (not head-to-head) | 62.76 | 62.95 |
| Benchmarks Covered | 7 | 12 |
| Pricing (input/output) | Pricing unavailable / Pricing unavailable | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Muse Spark Open public-lane score: 60.2 (Estimated · #28/132)
- Sage-A1.5 public-lane score: 57.7 (Estimated · #36/132)

| Benchmark | Muse Spark Open | Sage-A1.5 | Winner |
|-----------|-----------|-----------|--------|
| JobBench | 61.8% | Coming soon | Coming soon |
| MCP Atlas | 89.2% | Coming soon | Coming soon |
| HLE w/ tools | 61.0% | 55.1% | Muse Spark Open |
| Toolathlon-Verified | 72.8% | Coming soon | Coming soon |
| GAIA | Coming soon | 95.1% | Coming soon |
| BrowseComp | Coming soon | 81.7% | Coming soon |
| MLE-Bench Lite | Coming soon | 65.2% | Coming soon |
| VITA-Bench | Coming soon | 45.4% | Coming soon |
| PinchBench | Coming soon | 90.0% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Muse Spark Open public-lane score: 56 (Supported · #30/153)
- Sage-A1.5 public-lane score: 54 (Estimated · #34/153)

| Benchmark | Muse Spark Open | Sage-A1.5 | Winner |
|-----------|-----------|-----------|--------|
| SciCode | Coming soon | 44.3% | Coming soon |
| SWE-bench Pro | Coming soon | 61.2% | Coming soon |
| SWE Multilingual | Coming soon | 72.7% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Muse Spark Open public-lane score: 78.8 (Unranked · 2 rankable rows)
- Sage-A1.5 public-lane score: 80.6 (Unranked · 2 rankable rows)

| Benchmark | Muse Spark Open | Sage-A1.5 | Winner |
|-----------|-----------|-----------|--------|
| CritPt | Coming soon | 20.0% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Muse Spark Open public-lane score: 83.6 (Unranked · 4 rankable rows)
- Sage-A1.5 public-lane score: Coming soon

| Benchmark | Muse Spark Open | Sage-A1.5 | Winner |
|-----------|-----------|-----------|--------|
| ZeroBench | 50.0% | Coming soon | Coming soon |
| BabyVision | 80.2% | Coming soon | Coming soon |
| SimpleVQA | 73.6% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Muse Spark Open public-lane score: 64.7 (Supported · #40/187)
- Sage-A1.5 public-lane score: Coming soon

| Benchmark | Muse Spark Open | Sage-A1.5 | Winner |
|-----------|-----------|-----------|--------|
| FrontierScience Research | Coming soon | 48.3% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Muse Spark Open public-lane score: Coming soon
- Sage-A1.5 public-lane score: 91.9 (#22/152)

| Benchmark | Muse Spark Open | Sage-A1.5 | Winner |
|-----------|-----------|-----------|--------|
| IFBench | Coming soon | 81.6% | Coming soon |

## FAQ

### Is there enough evidence to pick between Muse Spark Open and Sage-A1.5?

Not yet. The models share only 1 sourced benchmark row, 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 Open vs Sage-A1.5-F16-GGUF](/compare/muse-spark-open-vs-sage-a1-5-f16-gguf)
- [Sage-A1.5 vs Sage-A1.5-F16-GGUF](/compare/sage-a1-5-vs-sage-a1-5-f16-gguf)
- [Muse Spark Open vs Sage-A1.5-FP8](/compare/muse-spark-open-vs-sage-a1-5-fp8)
- [Sage-A1.5 vs Sage-A1.5-FP8](/compare/sage-a1-5-vs-sage-a1-5-fp8)

## Explore More

- [Muse Spark Open profile](/models/muse-spark-open)
- [Sage-A1.5 profile](/models/sage-a1-5)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)