# Muse Spark vs Sage-A1.5

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

- Canonical page: https://benchlm.ai/compare/muse-spark-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 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.

## Model Snapshot

| Property | Muse Spark | Sage-A1.5 |
|----------|----------|----------|
| Creator | Meta | InternScience |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 262K | 262K |
| Independent public score (not head-to-head) | 60.48 | 62.95 |
| Benchmarks Covered | 25 | 12 |
| Pricing (input/output) | N/A | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Muse Spark public-lane score: 51.4 (Supported · #47/132)
- Sage-A1.5 public-lane score: 57.7 (Estimated · #36/132)

| Benchmark | Muse Spark | Sage-A1.5 | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 59% | Coming soon | Coming soon |
| τ²-bench results | 91.5% | Coming soon | Coming soon |
| DeepSearchQA | 74.8% | Coming soon | Coming soon |
| CyberGym | 43.5% | Coming soon | Coming soon |
| Claw-Eval | 63.8% | 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 |
| HLE w/ tools | Coming soon | 55.1% | Coming soon |
| VITA-Bench | Coming soon | 45.4% | Coming soon |
| PinchBench | Coming soon | 90.0% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Muse Spark public-lane score: 49.9 (Supported · #46/153)
- Sage-A1.5 public-lane score: 54 (Estimated · #34/153)

| Benchmark | Muse Spark | Sage-A1.5 | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 77.4% | Coming soon | Coming soon |
| SWE-bench Pro | 52.4% | 61.2% | Sage-A1.5 |
| LiveCodeBench Pro | 80.0% | Coming soon | Coming soon |
| Vibe Code Bench | 19.67% | Coming soon | Coming soon |
| SWE-bench (Vals) | 74.4% | Coming soon | Coming soon |
| SciCode | Coming soon | 44.3% | Coming soon |
| SWE Multilingual | Coming soon | 72.7% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Muse Spark public-lane score: 57.1 (Unranked · 3 rankable rows)
- Sage-A1.5 public-lane score: 80.6 (Unranked · 2 rankable rows)

| Benchmark | Muse Spark | Sage-A1.5 | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 42.5% | Coming soon | Coming soon |
| CritPt | Coming soon | 20.0% | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Muse Spark public-lane score: 84.4 (#12/55)
- Sage-A1.5 public-lane score: Coming soon

| Benchmark | Muse Spark | Sage-A1.5 | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | 86.4% | Coming soon | Coming soon |
| MMMU-Pro | 80.4% | Coming soon | Coming soon |
| ERQA | 64.7% | Coming soon | Coming soon |
| SimpleVQA | 71.3% | Coming soon | Coming soon |
| ScreenSpot Pro | 84.1% | Coming soon | Coming soon |
| ZeroBench | 33.0% | Coming soon | Coming soon |
| MedXpertQA (MM) | 78.4% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Muse Spark public-lane score: 62.5 (Supported · #45/187)
- Sage-A1.5 public-lane score: Coming soon

| Benchmark | Muse Spark | Sage-A1.5 | Winner |
|-----------|-----------|-----------|--------|
| GPQA-D | 89.5% | Coming soon | Coming soon |
| HLE | 50.4% | Coming soon | Coming soon |
| HLE w/o tools | 42.8% | Coming soon | Coming soon |
| HealthBench Hard | 42.8% | Coming soon | Coming soon |
| MedXpertQA (Text) | 52.6% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | 89.6% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 87.3% | Coming soon | Coming soon |
| FrontierScience Research | Coming soon | 48.3% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Muse Spark public-lane score: 93.3 (#11/152)
- Sage-A1.5 public-lane score: 91.9 (#22/152)

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

## FAQ

### Is there enough evidence to pick between Muse Spark 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 vs Muse Spark 1.1](/compare/muse-spark-vs-muse-spark-1-1)
- [Sage-A1.5 vs Muse Spark 1.1](/compare/muse-spark-1-1-vs-sage-a1-5)
- [Muse Spark vs Muse Spark 1.2](/compare/muse-spark-vs-muse-spark-1-2)
- [Sage-A1.5 vs Muse Spark 1.2](/compare/muse-spark-1-2-vs-sage-a1-5)

## Explore More

- [Muse Spark profile](/models/muse-spark)
- [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)