# Hy3 Preview vs Mistral Medium 3.5 128B

> Side-by-side benchmark comparison for Hy3 Preview and Mistral Medium 3.5 128B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/hy3-preview-vs-mistral-medium-3-5-128b
- Last updated: September 23, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.6

## Quick Verdict

Evidence is too thin for a benchmark verdict: Hy3 Preview and Mistral Medium 3.5 128B share only 2 sourced benchmark rows.

## Summary

- Only 2 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Hy3 Preview has the lower published output-token price.

## Model Snapshot

| Property | Hy3 Preview | Mistral Medium 3.5 128B |
|----------|----------|----------|
| Creator | Tencent | Mistral |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 256K | 256K |
| Independent public score (not head-to-head) | 45.32 | 36.22 |
| Benchmarks Covered | 6 | 7 |
| Pricing (input/output) | $0.00 / $0.00 | $1.50 / $7.50 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Hy3 Preview public-lane score: Coming soon
- Mistral Medium 3.5 128B public-lane score: 20.3 (Supported · #86/105)

| Benchmark | Hy3 Preview | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 54.4% | Coming soon | Coming soon |
| Gert Labs | 36.91% | 39.10% | Mistral Medium 3.5 128B |
| τ³-bench results | Coming soon | 91.4% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 39.0% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Hy3 Preview public-lane score: 33.3 (Estimated · #85/135)
- Mistral Medium 3.5 128B public-lane score: 29.8 (Estimated · #95/135)

| Benchmark | Hy3 Preview | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 74.4% | 77.6% | Mistral Medium 3.5 128B |
| Terminal-Bench 2.0 | 54.4% | Coming soon | Coming soon |
| SWE-bench (Vals) | Coming soon | 66.4% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Hy3 Preview public-lane score: Coming soon
- Mistral Medium 3.5 128B public-lane score: 68.6 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Hy3 Preview public-lane score: Coming soon
- Mistral Medium 3.5 128B public-lane score: 55.7 (Unranked · 1 rankable row)

### Knowledge

- Winner: Insufficient shared evidence
- Hy3 Preview public-lane score: 39.1 (Estimated · #93/160)
- Mistral Medium 3.5 128B public-lane score: 34 (Supported · #111/160)

| Benchmark | Hy3 Preview | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 87.2% | Coming soon | Coming soon |
| GPQA-D | 87.2% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 34.8% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 75.3% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Hy3 Preview public-lane score: 46.9 (#86/124)
- Mistral Medium 3.5 128B public-lane score: 82.6 (#49/124)

## FAQ

### Is there enough evidence to pick between Hy3 Preview and Mistral Medium 3.5 128B?

Not yet. The models share only 2 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

- [Hy3 Preview vs Hy3](/compare/hy3-vs-hy3-preview)
- [Mistral Medium 3.5 128B vs Hy3](/compare/hy3-vs-mistral-medium-3-5-128b)
- [Hy3 Preview vs GPT-6 Astra](/compare/gpt-6-astra-vs-hy3-preview)
- [Mistral Medium 3.5 128B vs GPT-6 Astra](/compare/gpt-6-astra-vs-mistral-medium-3-5-128b)

## Explore More

- [Hy3 Preview profile](/models/hy3-preview)
- [Mistral Medium 3.5 128B profile](/models/mistral-medium-3-5-128b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)