# Mistral Medium 3.5 128B vs Muse Spark

> Side-by-side benchmark comparison for Mistral Medium 3.5 128B and Muse Spark across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/mistral-medium-3-5-128b-vs-muse-spark
- Last updated: September 29, 2026

- Shared sourced benchmarks: 4
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Pick Muse Spark if you want the stronger benchmark profile. Mistral Medium 3.5 128B only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Muse Spark leads overall 60.57 to 36.09.
- The clearest category separation is in agentic, where the averages are 19.7 for Mistral Medium 3.5 128B and 50 for Muse Spark.
- The biggest single benchmark swing is GPQA Diamond (Vals) in Knowledge, with scores of 34.8% and 89.6%.
- Muse Spark also has the larger context window at 262K.

## Model Snapshot

| Property | Mistral Medium 3.5 128B | Muse Spark |
|----------|----------|----------|
| Creator | Mistral | Meta |
| Type | Open Weight | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 256K | 262K |
| Overall Score | 36.09 | 60.57 |
| Benchmarks Covered | 7 | 27 |
| Pricing (input/output) | $1.50 / $7.50 | N/A |

## Category Breakdown

### Agentic

- Winner: Muse Spark
- Mistral Medium 3.5 128B public-lane score: 19.7 (Supported · #100/117)
- Muse Spark public-lane score: 50 (Supported · #39/117)

| Benchmark | Mistral Medium 3.5 128B | Muse Spark | Winner |
|-----------|-----------|-----------|--------|
| τ³-bench results | 91.4% | Coming soon | Coming soon |
| Gert Labs | 39.10% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 39.0% | Coming soon | Coming soon |
| Terminal-Bench 2.0 | Coming soon | 59% | Coming soon |
| τ²-bench results | Coming soon | 91.5% | Coming soon |
| DeepSearchQA | Coming soon | 74.8% | Coming soon |
| CyberGym | Coming soon | 43.5% | Coming soon |
| Claw-Eval | Coming soon | 63.8% | Coming soon |

### Coding

- Winner: Directional only
- Mistral Medium 3.5 128B public-lane score: 26.6 (Estimated · #102/143)
- Muse Spark public-lane score: 53.3 (Supported · #35/143)

| Benchmark | Mistral Medium 3.5 128B | Muse Spark | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 77.6% | 77.4% | Mistral Medium 3.5 128B |
| SWE-bench (Vals) | 66.4% | 74.4% | Muse Spark |
| SWE-bench Pro | Coming soon | 52.4% | Coming soon |
| LiveCodeBench Pro | Coming soon | 80.0% | Coming soon |
| Vibe Code Bench | Coming soon | 19.67% | Coming soon |

### Reasoning

- Winner: Not comparable
- Mistral Medium 3.5 128B public-lane score: 69.9 (Unranked · 2 rankable rows)
- Muse Spark public-lane score: 53.4 (Unranked · 3 rankable rows)

| Benchmark | Mistral Medium 3.5 128B | Muse Spark | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | Coming soon | 42.5% | Coming soon |

### Multimodal & Grounded

- Winner: Not comparable
- Mistral Medium 3.5 128B public-lane score: 56.7 (Unranked · 1 rankable row)
- Muse Spark public-lane score: 78.5 (#14/50)

| Benchmark | Mistral Medium 3.5 128B | Muse Spark | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | Coming soon | 86.4% | Coming soon |
| MMMU-Pro | Coming soon | 80.4% | Coming soon |
| ERQA | Coming soon | 64.7% | Coming soon |
| SimpleVQA | Coming soon | 71.3% | Coming soon |
| ScreenSpot Pro | Coming soon | 84.1% | Coming soon |
| ZeroBench | Coming soon | 33.0% | Coming soon |
| MedXpertQA (MM) | Coming soon | 78.4% | Coming soon |

### Knowledge

- Winner: Muse Spark
- Mistral Medium 3.5 128B public-lane score: 33.6 (Supported · #121/169)
- Muse Spark public-lane score: 60.5 (Supported · #40/169)

| Benchmark | Mistral Medium 3.5 128B | Muse Spark | Winner |
|-----------|-----------|-----------|--------|
| GPQA Diamond (Vals) | 34.8% | 89.6% | Muse Spark |
| MMLU-Pro (Vals) | 75.3% | 87.3% | Muse Spark |
| GPQA-D | Coming soon | 89.5% | Coming soon |
| HLE | Coming soon | 50.4% | Coming soon |
| HLE w/o tools | Coming soon | 42.8% | Coming soon |
| HealthBench Hard | Coming soon | 42.8% | Coming soon |
| MedXpertQA (Text) | Coming soon | 52.6% | Coming soon |

### Instruction Following

- Winner: Directional only
- Mistral Medium 3.5 128B public-lane score: 82.6 (#48/124)
- Muse Spark public-lane score: 91.9 (#8/124)

### Mathematics

- Winner: Not comparable
- Mistral Medium 3.5 128B public-lane score: Coming soon
- Muse Spark public-lane score: 55.1 (Unranked · 2 rankable rows)

| Benchmark | Mistral Medium 3.5 128B | Muse Spark | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | Coming soon | 39.000% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 14.600% | Coming soon |

## FAQ

### Which is better overall, Mistral Medium 3.5 128B or Muse Spark?

Muse Spark is ahead overall on BenchLM right now.

### Where is the biggest gap between Mistral Medium 3.5 128B and Muse Spark?

The widest category gap is in agentic, where the averages are 19.7 for Mistral Medium 3.5 128B and 50 for Muse Spark.

### How many benchmarks does Mistral Medium 3.5 128B cover on BenchLM?

Mistral Medium 3.5 128B currently has 7 sourced benchmark scores on BenchLM.

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

Muse Spark currently has 27 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Mistral Medium 3.5 128B vs Muse Spark 1.1](/compare/mistral-medium-3-5-128b-vs-muse-spark-1-1)
- [Muse Spark vs Muse Spark 1.1](/compare/muse-spark-vs-muse-spark-1-1)
- [Mistral Medium 3.5 128B vs Muse Spark 1.2](/compare/mistral-medium-3-5-128b-vs-muse-spark-1-2)
- [Muse Spark vs Muse Spark 1.2](/compare/muse-spark-vs-muse-spark-1-2)

## Explore More

- [Mistral Medium 3.5 128B profile](/models/mistral-medium-3-5-128b)
- [Muse Spark profile](/models/muse-spark)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)