# Claude Haiku 4.5 Thinking vs Qwen3.5 Plus

> Side-by-side benchmark comparison for Claude Haiku 4.5 Thinking and Qwen3.5 Plus across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/claude-haiku-4-5-thinking-vs-qwen3-5-plus
- Last updated: September 4, 2026

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

## Quick Verdict

Evidence is too thin for a benchmark verdict: Claude Haiku 4.5 Thinking and Qwen3.5 Plus 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.
- Qwen3.5 Plus has the larger published context window at 1M.

## Model Snapshot

| Property | Claude Haiku 4.5 Thinking | Qwen3.5 Plus |
|----------|----------|----------|
| Creator | Anthropic | Alibaba |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 200K | 1M |
| Independent public score (not head-to-head) | null | 51.63 |
| Benchmarks Covered | 1 | 4 |
| Pricing (input/output) | N/A | $0.40 / $2.40 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Claude Haiku 4.5 Thinking public-lane score: Coming soon
- Qwen3.5 Plus public-lane score: 50.2 (Estimated · #62/151)

| Benchmark | Claude Haiku 4.5 Thinking | Qwen3.5 Plus | Winner |
|-----------|-----------|-----------|--------|
| JobBench | Coming soon | 18.5% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Claude Haiku 4.5 Thinking public-lane score: Coming soon
- Qwen3.5 Plus public-lane score: Coming soon

| Benchmark | Claude Haiku 4.5 Thinking | Qwen3.5 Plus | Winner |
|-----------|-----------|-----------|--------|
| Vibe Code Bench | 11.39% | 15.74% | Qwen3.5 Plus |

### Mathematics

- Winner: Insufficient shared evidence
- Claude Haiku 4.5 Thinking public-lane score: Coming soon
- Qwen3.5 Plus public-lane score: 39.5 (Unranked · 2 rankable rows)

| Benchmark | Claude Haiku 4.5 Thinking | Qwen3.5 Plus | Winner |
|-----------|-----------|-----------|--------|
| FrontierMath v2 (Tiers 1-3) | Coming soon | 21.034% | Coming soon |
| FrontierMath v2 (Tier 4) | Coming soon | 2.083% | Coming soon |

## FAQ

### Is there enough evidence to pick between Claude Haiku 4.5 Thinking and Qwen3.5 Plus?

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 Haiku 4.5 Thinking vs Claude Haiku 4.5](/compare/claude-haiku-4-5-vs-claude-haiku-4-5-thinking)
- [Qwen3.5 Plus vs Claude Haiku 4.5](/compare/claude-haiku-4-5-vs-qwen3-5-plus)
- [Claude Haiku 4.5 Thinking vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-claude-haiku-4-5-thinking)
- [Qwen3.5 Plus vs Claude Fable 5.1](/compare/claude-fable-5-1-vs-qwen3-5-plus)

## Explore More

- [Claude Haiku 4.5 Thinking profile](/models/claude-haiku-4-5-thinking)
- [Qwen3.5 Plus profile](/models/qwen3-5-plus)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)