# Claude 3.5 Haiku vs DeepSeek V3.1 (Reasoning)

> Side-by-side benchmark comparison for Claude 3.5 Haiku and DeepSeek V3.1 (Reasoning) across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-3-5-haiku-vs-deepseek-v3-1-reasoning
- Last updated: October 14, 2026

- Shared sourced benchmarks: 3
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude 3.5 Haiku and DeepSeek V3.1 (Reasoning) share only 3 sourced benchmark rows.

## Summary

- Only 3 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- Claude 3.5 Haiku has the larger published context window at 200K.

## Model Snapshot

| Property | Claude 3.5 Haiku | DeepSeek V3.1 (Reasoning) |
|----------|----------|----------|
| Creator | Anthropic | DeepSeek |
| Type | Proprietary | Open Weight |
| Reasoning | Non-Reasoning | Reasoning |
| Context | 200K | 128K |
| Independent public score (not head-to-head) | null | 38.87 |
| Benchmarks Covered | 10 | 6 |
| Pricing (input/output) | N/A | $0.00 / $0.00 |

## Category Breakdown

### Coding

- Winner: Insufficient shared evidence
- Claude 3.5 Haiku public-lane score: Coming soon
- DeepSeek V3.1 (Reasoning) public-lane score: Coming soon

| Benchmark | Claude 3.5 Haiku | DeepSeek V3.1 (Reasoning) | Winner |
|-----------|-----------|-----------|--------|
| HumanEval | 88.1% | Coming soon | Coming soon |
| SWE-bench Verified | 40.6% | Coming soon | Coming soon |
| LiveCodeBench | Coming soon | 74.8% | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Claude 3.5 Haiku public-lane score: Coming soon
- DeepSeek V3.1 (Reasoning) public-lane score: 64.8 (Unranked · 2 rankable rows)

| Benchmark | Claude 3.5 Haiku | DeepSeek V3.1 (Reasoning) | Winner |
|-----------|-----------|-----------|--------|
| BBH | 86.6% | Coming soon | Coming soon |
| DROP | 83.1% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Claude 3.5 Haiku public-lane score: Coming soon
- DeepSeek V3.1 (Reasoning) public-lane score: 40.8 (Supported · #113/181)

| Benchmark | Claude 3.5 Haiku | DeepSeek V3.1 (Reasoning) | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 41.6% | 80.1% | DeepSeek V3.1 (Reasoning) |
| MMLU-Pro | 65% | 84.8% | DeepSeek V3.1 (Reasoning) |
| MMLU | 80.3% | Coming soon | Coming soon |
| HLE | Coming soon | 15.9% | Coming soon |

### Multilingual

- Winner: Insufficient shared evidence
- Claude 3.5 Haiku public-lane score: Coming soon
- DeepSeek V3.1 (Reasoning) public-lane score: Coming soon

| Benchmark | Claude 3.5 Haiku | DeepSeek V3.1 (Reasoning) | Winner |
|-----------|-----------|-----------|--------|
| MGSM | 85.6% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Claude 3.5 Haiku public-lane score: Coming soon
- DeepSeek V3.1 (Reasoning) public-lane score: 48.4 (#85/128)

| Benchmark | Claude 3.5 Haiku | DeepSeek V3.1 (Reasoning) | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 85.9% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Claude 3.5 Haiku public-lane score: Coming soon
- DeepSeek V3.1 (Reasoning) public-lane score: Coming soon

| Benchmark | Claude 3.5 Haiku | DeepSeek V3.1 (Reasoning) | Winner |
|-----------|-----------|-----------|--------|
| AIME 2024 | 5.3% | 93.1% | DeepSeek V3.1 (Reasoning) |
| AIME 2025 | Coming soon | 88.4% | Coming soon |

## FAQ

### Is there enough evidence to pick between Claude 3.5 Haiku and DeepSeek V3.1 (Reasoning)?

Not yet. The models share only 3 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

- [Claude 3.5 Haiku vs DeepSeek V3.1](/compare/claude-3-5-haiku-vs-deepseek-v3-1)
- [DeepSeek V3.1 (Reasoning) vs DeepSeek V3.1](/compare/deepseek-v3-1-vs-deepseek-v3-1-reasoning)
- [Claude 3.5 Haiku vs Claude Opus 5.5](/compare/claude-3-5-haiku-vs-claude-opus-5-5)
- [DeepSeek V3.1 (Reasoning) vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-deepseek-v3-1-reasoning)

## Explore More

- [Claude 3.5 Haiku profile](/models/claude-3-5-haiku)
- [DeepSeek V3.1 (Reasoning) profile](/models/deepseek-v3-1-reasoning)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)