# Granite 4.2 8B vs Mistral Medium 3.5 128B

> Side-by-side benchmark comparison for Granite 4.2 8B and Mistral Medium 3.5 128B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/granite-4-2-8b-vs-mistral-medium-3-5-128b
- Last updated: October 15, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Granite 4.2 8B 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.
- Granite 4.2 8B has the lower published output-token price.
- Mistral Medium 3.5 128B has the larger published context window at 256K.

## Model Snapshot

| Property | Granite 4.2 8B | Mistral Medium 3.5 128B |
|----------|----------|----------|
| Creator | IBM | Mistral |
| Type | Open Weight | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 128K | 256K |
| Independent public score (not head-to-head) | 33.4 | 33.72 |
| Benchmarks Covered | 14 | 7 |
| Pricing (input/output) | $0.00 / $0.00 | $1.50 / $7.50 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Granite 4.2 8B public-lane score: 15.7 (Estimated · #113/127)
- Mistral Medium 3.5 128B public-lane score: 20 (Supported · #107/127)

| Benchmark | Granite 4.2 8B | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 20.6% | Coming soon | Coming soon |
| τ³-bench results | 58.1% | 91.4% | Mistral Medium 3.5 128B |
| BFCL v4 | 52.4% | Coming soon | Coming soon |
| Gert Labs | Coming soon | 39.10% | Coming soon |
| Terminal-Bench 2.1 (Vals) | Coming soon | 39.0% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Granite 4.2 8B public-lane score: 17.2 (Estimated · #125/150)
- Mistral Medium 3.5 128B public-lane score: 22.6 (Estimated · #114/150)

| Benchmark | Granite 4.2 8B | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 47.7% | 77.6% | Mistral Medium 3.5 128B |
| SWE-bench Pro | 19.1% | Coming soon | Coming soon |
| SWE Multilingual | 30.8% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 20.6% | Coming soon | Coming soon |
| LiveCodeBench v6 | 73.2% | Coming soon | Coming soon |
| SciCode | 36.1% | Coming soon | Coming soon |
| SWE-bench (Vals) | Coming soon | 66.4% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Granite 4.2 8B public-lane score: 56.8 (Unranked · 2 rankable rows)
- Mistral Medium 3.5 128B public-lane score: 73.5 (Unranked · 2 rankable rows)

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Granite 4.2 8B public-lane score: Coming soon
- Mistral Medium 3.5 128B public-lane score: 60.1 (Unranked · 1 rankable row)

### Knowledge

- Winner: Insufficient shared evidence
- Granite 4.2 8B public-lane score: 30.6 (Supported · #154/184)
- Mistral Medium 3.5 128B public-lane score: 31.9 (Supported · #148/184)

| Benchmark | Granite 4.2 8B | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 64.1% | Coming soon | Coming soon |
| MMLU-Pro | 74.0% | 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
- Granite 4.2 8B public-lane score: 86.5 (#41/146)
- Mistral Medium 3.5 128B public-lane score: 84 (#50/146)

| Benchmark | Granite 4.2 8B | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 79.3% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Granite 4.2 8B public-lane score: Coming soon
- Mistral Medium 3.5 128B public-lane score: Coming soon

| Benchmark | Granite 4.2 8B | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| AIME 2025 | 86.7% | Coming soon | Coming soon |
| HMMT Feb 2025 | 78.3% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between Granite 4.2 8B 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

- [Granite 4.2 8B vs Granite 4.2 30B](/compare/granite-4-2-30b-vs-granite-4-2-8b)
- [Mistral Medium 3.5 128B vs Granite 4.2 30B](/compare/granite-4-2-30b-vs-mistral-medium-3-5-128b)
- [Granite 4.2 8B vs Granite 4.2 3B](/compare/granite-4-2-3b-vs-granite-4-2-8b)
- [Mistral Medium 3.5 128B vs Granite 4.2 3B](/compare/granite-4-2-3b-vs-mistral-medium-3-5-128b)

## Explore More

- [Granite 4.2 8B profile](/models/granite-4-2-8b)
- [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)