Model comparison
Claude Haiku 5.5 vs Qwen3.5-Flash
Claude Haiku 5.5 is the stronger model overall, scoring 49.5 to 42.5 on the Noometry Index.
Last verified . 6 shared benchmarks.
Alibaba (Qwen)Summary
- They share 6 benchmarks with published results for both. Claude Haiku 5.5 scores higher in 4 categories and Qwen3.5-Flash in 0 categories; 4 gaps are clear of the uncertainty.
- The widest gap is in math, where Claude Haiku 5.5 leads 73.6 to 37.4.
- The biggest single-benchmark swing is FrontierMath (Tiers 1-3): 75.1% for Claude Haiku 5.5 and 18.2% for Qwen3.5-Flash.
- Qwen3.5-Flash is cheaper at $0.10 / $0.40 per million input/output tokens, against $0.10 / $0.50 for Claude Haiku 5.5.
Side by side
| Claude Haiku 5.5 | Qwen3.5-Flash | |
|---|---|---|
| Provider | Anthropic | Alibaba (Qwen) |
| Noometry Index | 49.5 | 42.5 |
| Released | 2026-10-07 | 2026-02-23 |
| Weights | Proprietary | Proprietary |
| Context window | 1M | 1M |
| Max output | 128K | 66K |
| Input $ / M tokens | $0.10 | $0.10 |
| Output $ / M tokens | $0.50 | $0.40 |
| Results tracked | 9 | 32 |
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Category by category
Coding Claude Haiku 5.5 leads
Claude Haiku 5.5: 49.2 (#50), Qwen3.5-Flash: 34.2 (#242)
| Benchmark | Claude Haiku 5.5 | Qwen3.5-Flash |
|---|---|---|
| LMArena WebDev | 1587 | 1244 |
| LMArena Coding | — | 1412 |
| ALE-Bench | — | 221.8 |
Agentic & Tool Use Not comparable
Claude Haiku 5.5: —, Qwen3.5-Flash: —
| Benchmark | Claude Haiku 5.5 | Qwen3.5-Flash |
|---|---|---|
| Vending-Bench 2 | — | 462.69 |
Reasoning Claude Haiku 5.5 leads
Claude Haiku 5.5: 35.2 (#69), Qwen3.5-Flash: 33.7 (#72)
| Benchmark | Claude Haiku 5.5 | Qwen3.5-Flash |
|---|---|---|
| Mystery Game Puzzles | 30% | 20% |
| NYT Connections (extended) | 65.7% | — |
| Chess Puzzles | — | 21% |
| LMArena Hard Prompts | — | 1403 |
| DTBench | — | 82.9% |
| LMCA | — | 29.1% |
| Epoch Capabilities Index | — | 143.98 |
Math Claude Haiku 5.5 leads
Claude Haiku 5.5: 73.6 (#18), Qwen3.5-Flash: 37.4 (#158)
| Benchmark | Claude Haiku 5.5 | Qwen3.5-Flash |
|---|---|---|
| FrontierMath (Tiers 1-3) | 75.1% | 18.2% |
| OTIS Mock AIME 2024-2025 | 98.9% | 84.4% |
| FrontierMath Tier 4 | 46.3% | — |
| LMArena Math | — | 1407 |
| FrontierMath (Feb 2025 set) | — | 6.2% |
| FrontierMath Tier 4 (v1) | — | 0% |
Knowledge Claude Haiku 5.5 leads
Claude Haiku 5.5: 50.8 (#70), Qwen3.5-Flash: 43.2 (#93)
| Benchmark | Claude Haiku 5.5 | Qwen3.5-Flash |
|---|---|---|
| GPQA Diamond | 89.6% | 82.3% |
| SimpleQA Verified | 23.8% | 20.3% |
| Vectara Hallucination Rate | — | 10.5% |
| LMArena Expert | — | 1407 |
Multimodal Not comparable
Claude Haiku 5.5: 43.7 (#21), Qwen3.5-Flash: —
| Benchmark | Claude Haiku 5.5 | Qwen3.5-Flash |
|---|---|---|
| Furniture Assembly | 47.5% | — |
Multilingual Not comparable
Claude Haiku 5.5: —, Qwen3.5-Flash: 50.5 (#121)
| Benchmark | Claude Haiku 5.5 | Qwen3.5-Flash |
|---|---|---|
| LMArena Non-English | — | 1385 |
| LMArena Chinese | — | 1446 |
| LMArena French | — | 1412 |
| LMArena German | — | 1390 |
| LMArena Japanese | — | 1368 |
| LMArena Korean | — | 1344 |
| LMArena Russian | — | 1379 |
| LMArena Spanish | — | 1400 |
Instruction Following Not comparable
Claude Haiku 5.5: —, Qwen3.5-Flash: 72.6 (#139)
| Benchmark | Claude Haiku 5.5 | Qwen3.5-Flash |
|---|---|---|
| LMArena Instruction Following | — | 1374 |
Long Context Not comparable
Claude Haiku 5.5: —, Qwen3.5-Flash: 42.4 (#124)
| Benchmark | Claude Haiku 5.5 | Qwen3.5-Flash |
|---|---|---|
| LMArena Longer Query | — | 1392 |
Writing & Preference Not comparable
Claude Haiku 5.5: —, Qwen3.5-Flash: 57.9 (#122)
| Benchmark | Claude Haiku 5.5 | Qwen3.5-Flash |
|---|---|---|
| LMArena Text | — | 1397 |
| LMArena Creative Writing | — | 1343 |
| LMArena Multi-Turn | — | 1393 |
Frequently asked questions
Is Claude Haiku 5.5 better than Qwen3.5-Flash?
Claude Haiku 5.5 is the stronger model overall, scoring 49.5 to 42.5 on the Noometry Index.
Which is cheaper, Claude Haiku 5.5 or Qwen3.5-Flash?
Qwen3.5-Flash is cheaper. It lists at $0.10 per million input tokens and $0.40 per million output tokens; Claude Haiku 5.5 lists at $0.10 and $0.50.
Is Claude Haiku 5.5 or Qwen3.5-Flash better for coding?
Claude Haiku 5.5 scores higher on coding benchmarks: 49.2 versus 34.2 in the Noometry coding category.
Which has the bigger context window?
Both accept 1M tokens.
How many benchmarks do Claude Haiku 5.5 and Qwen3.5-Flash share?
6 benchmarks have published results for both models. Claude Haiku 5.5 has 9 scored results on Noometry and Qwen3.5-Flash has 32.