# Claude 3.5 Haiku vs Mistral Medium 3.5 128B

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

- Canonical page: https://benchlm.ai/compare/claude-3-5-haiku-vs-mistral-medium-3-5-128b
- Last updated: October 14, 2026

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

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude 3.5 Haiku and Mistral Medium 3.5 128B 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.
- Mistral Medium 3.5 128B has the larger published context window at 256K.

## Model Snapshot

| Property | Claude 3.5 Haiku | Mistral Medium 3.5 128B |
|----------|----------|----------|
| Creator | Anthropic | Mistral |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 200K | 256K |
| Independent public score (not head-to-head) | null | 33.58 |
| Benchmarks Covered | 10 | 7 |
| Pricing (input/output) | N/A | $1.50 / $7.50 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude 3.5 Haiku public-lane score: Coming soon
- Mistral Medium 3.5 128B public-lane score: 19.2 (Supported · #105/124)

| Benchmark | Claude 3.5 Haiku | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| τ³-bench results | Coming soon | 91.4% | 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
- Claude 3.5 Haiku public-lane score: Coming soon
- Mistral Medium 3.5 128B public-lane score: 23 (Estimated · #113/149)

| Benchmark | Claude 3.5 Haiku | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| HumanEval | 88.1% | Coming soon | Coming soon |
| SWE-bench Verified | 40.6% | 77.6% | Mistral Medium 3.5 128B |
| SWE-bench (Vals) | Coming soon | 66.4% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude 3.5 Haiku public-lane score: Coming soon
- Mistral Medium 3.5 128B public-lane score: 73.5 (Unranked · 2 rankable rows)

| Benchmark | Claude 3.5 Haiku | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| BBH | 86.6% | Coming soon | Coming soon |
| DROP | 83.1% | Coming soon | Coming soon |

### Multimodal & Grounded

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

### Knowledge

- Winner: Insufficient shared evidence
- Claude 3.5 Haiku public-lane score: Coming soon
- Mistral Medium 3.5 128B public-lane score: 31.9 (Supported · #145/181)

| Benchmark | Claude 3.5 Haiku | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 41.6% | Coming soon | Coming soon |
| MMLU-Pro | 65% | Coming soon | Coming soon |
| MMLU | 80.3% | Coming soon | Coming soon |
| GPQA Diamond (Vals) | Coming soon | 34.8% | Coming soon |
| MMLU-Pro (Vals) | Coming soon | 75.3% | Coming soon |

### Multilingual

- Winner: Insufficient shared evidence
- Claude 3.5 Haiku public-lane score: Coming soon
- Mistral Medium 3.5 128B public-lane score: Coming soon

| Benchmark | Claude 3.5 Haiku | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| MGSM | 85.6% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Claude 3.5 Haiku public-lane score: Coming soon
- Mistral Medium 3.5 128B public-lane score: 84 (#50/128)

| Benchmark | Claude 3.5 Haiku | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 85.9% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Claude 3.5 Haiku public-lane score: Coming soon
- Mistral Medium 3.5 128B public-lane score: Coming soon

| Benchmark | Claude 3.5 Haiku | Mistral Medium 3.5 128B | Winner |
|-----------|-----------|-----------|--------|
| AIME 2024 | 5.3% | Coming soon | Coming soon |

## FAQ

### Is there enough evidence to pick between Claude 3.5 Haiku and Mistral Medium 3.5 128B?

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

- [Claude 3.5 Haiku vs Claude Opus 5.5](/compare/claude-3-5-haiku-vs-claude-opus-5-5)
- [Mistral Medium 3.5 128B vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-mistral-medium-3-5-128b)
- [Claude 3.5 Haiku vs GPT-6.1 Sol](/compare/claude-3-5-haiku-vs-gpt-6-1-sol)
- [Mistral Medium 3.5 128B vs GPT-6.1 Sol](/compare/gpt-6-1-sol-vs-mistral-medium-3-5-128b)

## Explore More

- [Claude 3.5 Haiku profile](/models/claude-3-5-haiku)
- [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)