Qwen3.5 Plus 2026-02-15
qwen/qwen3.5-plus-20260216
This model processes text, image, and video inputs and generates text outputs. It has a context length of 1,000,000 tokens and supports tool use and reasoning. Input is priced at $0.26 per million tokens, and output is priced at $1.56 per million tokens.
- tool use
- structured outputs
- reasoning
At a glance
Specifications
What the API gives you
- Context window
- 1M tokens
- Max output
- 66K tokens
- Input price
- $0.26 / 1M tokens
- Output price
- $1.56 / 1M tokens
- Cache read
- —
- Modalities
- text, image, video → text
- Knowledge cutoff
- —
- Released
- Feb 16, 2026
Measured evidence
Public benchmark record
- Design Arena Coding
- 1168 Elo2026-10-20
- Design Arena UI
- 1179 Elo2026-10-20
- Design Arena Website
- 1189 Elo2026-10-20
LMArena data licensed CC-BY-4.0. Aider (Apache-2.0) and SWE-bench (MIT) are open. Design Arena uses blind human preference.
Task evidence
How broad is the support?
Each status is exact to this model version and the selected task. Official release claims remain provisional.
- Best LLM for Frontend & UIProvisional evidence
55% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LiveBench Coding or LMArena WebDev. 6 of 6 configured evaluation feeds currently have results.
- Best LLM for CodingProvisional evidence
16% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Aider Polyglot or LiveBench Coding. 7 of 7 configured evaluation feeds currently have results.
Recommendation coverage
Where this model appears
Not currently included in a published recommendation. The task evidence panel above says exactly what is confirmed and what is still missing.
Catalog data via OpenRouter and models.dev. Last checked within the past 6 hours.