Qwen3.5 Flash vs Z-1

Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.

Benchmark data for one or both models is coming soon. This page currently shows metadata and pricing where BenchLM has it, and score-level comparisons will populate as public benchmark results land.
Agentic
Coding
Multimodal & Grounded
Reasoning
Knowledge
Instruction Following
Multilingual
Mathematics

Qwen3.5 Flash· Z-1

Quick Verdict

Benchmark data for Qwen3.5 Flash and Z-1 is coming soon on BenchLM.

BenchLM does not have sourced benchmark coverage for Qwen3.5 Flash yet. This comparison is currently limited to metadata such as context window, reasoning mode, and pricing where available.

Qwen3.5 Flash has the larger context window at 1M, compared with 128K for Z-1.

Operational tradeoffs

ProviderAlibabaZ
PricePricing unavailablePricing unavailable
SpeedN/AN/A
TTFTN/AN/A
Context1M128K

Decision framing

BenchLM keeps the benchmark table and the operator tradeoffs on the same page so a better score does not hide a materially slower, pricier, or smaller-context model.

Runtime metrics show N/A when BenchLM does not have a sourced snapshot for that exact model. The scoring rules and freshness policy are documented on the methodology page.

BenchmarkQwen3.5 FlashZ-1
Agentic
Terminal-Bench 2.039%
BrowseComp49%
OSWorld-Verified41%
Coding
HumanEval44%
SWE-bench Verified33%
LiveCodeBench22%
SWE-bench Pro30%
Multimodal & Grounded
MMMU-Pro46%
OfficeQA Pro56%
Reasoning
MuSR48%
BBH74%
LongBench v256%
MRCRv257%
Knowledge
MMLU52%
GPQA51%
SuperGPQA49%
MMLU-Pro64%
HLE6%
FrontierScience51%
SimpleQA50%
Instruction Following
IFEval80%
Multilingual
MGSM74%
MMLU-ProX72%
Mathematics
AIME 202352%
AIME 202454%
AIME 202553%
HMMT Feb 202348%
HMMT Feb 202450%
HMMT Feb 202549%
BRUMO 202551%
MATH-50073%
Frequently Asked Questions (3)

Can I compare Qwen3.5 Flash and Z-1 on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but the sourced benchmark breakdown for this comparison is still coming soon.

Why does this comparison show “coming soon”?

BenchLM only shows category winners and benchmark-level calls when we have sourced results that can be compared fairly. For these models, the public benchmark coverage is not complete enough yet.

What data is available for Qwen3.5 Flash and Z-1 today?

Qwen3.5 Flash: Pricing unavailable Z-1: Pricing unavailable Both model pages still include creator, context window, reasoning mode, and other metadata while benchmark coverage fills in.

Last updated: March 31, 2026

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