# Claude 3.5 Haiku vs Claude 4 Sonnet

> Side-by-side benchmark comparison for Claude 3.5 Haiku and Claude 4 Sonnet across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-3-5-haiku-vs-claude-4-sonnet
- 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 Claude 4 Sonnet 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.

## Model Snapshot

| Property | Claude 3.5 Haiku | Claude 4 Sonnet |
|----------|----------|----------|
| Creator | Anthropic | Anthropic |
| Type | Proprietary | Proprietary |
| Reasoning | Non-Reasoning | Non-Reasoning |
| Context | 200K | 200K |
| Independent public score (not head-to-head) | null | 37.94 |
| Benchmarks Covered | 10 | 4 |
| Pricing (input/output) | N/A | $3.00 / $15.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude 3.5 Haiku public-lane score: Coming soon
- Claude 4 Sonnet public-lane score: Coming soon

| Benchmark | Claude 3.5 Haiku | Claude 4 Sonnet | Winner |
|-----------|-----------|-----------|--------|
| Gert Labs | Coming soon | 39.66% | Coming soon |
| JobBench | Coming soon | 18.4% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude 3.5 Haiku public-lane score: Coming soon
- Claude 4 Sonnet public-lane score: Coming soon

| Benchmark | Claude 3.5 Haiku | Claude 4 Sonnet | Winner |
|-----------|-----------|-----------|--------|
| HumanEval | 88.1% | Coming soon | Coming soon |
| SWE-bench Verified | 40.6% | 72.7% | Claude 4 Sonnet |

### Reasoning

- Winner: Insufficient shared evidence
- Claude 3.5 Haiku public-lane score: Coming soon
- Claude 4 Sonnet public-lane score: 56.1 (Unranked · 2 rankable rows)

| Benchmark | Claude 3.5 Haiku | Claude 4 Sonnet | 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
- Claude 4 Sonnet public-lane score: 56.4 (Unranked · 1 rankable row)

### Knowledge

- Winner: Insufficient shared evidence
- Claude 3.5 Haiku public-lane score: Coming soon
- Claude 4 Sonnet public-lane score: 37.7 (Estimated · #123/181)

| Benchmark | Claude 3.5 Haiku | Claude 4 Sonnet | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 41.6% | Coming soon | Coming soon |
| MMLU-Pro | 65% | Coming soon | Coming soon |
| MMLU | 80.3% | Coming soon | Coming soon |

### Multilingual

- Winner: Insufficient shared evidence
- Claude 3.5 Haiku public-lane score: Coming soon
- Claude 4 Sonnet public-lane score: Coming soon

| Benchmark | Claude 3.5 Haiku | Claude 4 Sonnet | Winner |
|-----------|-----------|-----------|--------|
| MGSM | 85.6% | Coming soon | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Claude 3.5 Haiku public-lane score: Coming soon
- Claude 4 Sonnet public-lane score: 53.5 (#79/128)

| Benchmark | Claude 3.5 Haiku | Claude 4 Sonnet | Winner |
|-----------|-----------|-----------|--------|
| IFEval | 85.9% | Coming soon | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Claude 3.5 Haiku public-lane score: Coming soon
- Claude 4 Sonnet public-lane score: Coming soon

| Benchmark | Claude 3.5 Haiku | Claude 4 Sonnet | Winner |
|-----------|-----------|-----------|--------|
| AIME 2024 | 5.3% | Coming soon | Coming soon |
| AIME 2025 | Coming soon | 33.1% | Coming soon |

## FAQ

### Is there enough evidence to pick between Claude 3.5 Haiku and Claude 4 Sonnet?

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)
- [Claude 4 Sonnet vs Claude Opus 5.5](/compare/claude-4-sonnet-vs-claude-opus-5-5)
- [Claude 3.5 Haiku vs GPT-6.1 Sol](/compare/claude-3-5-haiku-vs-gpt-6-1-sol)
- [Claude 4 Sonnet vs GPT-6.1 Sol](/compare/claude-4-sonnet-vs-gpt-6-1-sol)

## Explore More

- [Claude 3.5 Haiku profile](/models/claude-3-5-haiku)
- [Claude 4 Sonnet profile](/models/claude-4-sonnet)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)