Qwen3.5 Plus 2026-02-15

qwen/qwen3.5-plus-20260216

Qwen: Qwen3.5 Plus, released on 2026-02-15 by Qwen, accepts text, image, and video inputs and generates text output with a context length of 1,000,000 tokens. It supports tools and reasoning, is priced at $0.26 per million input tokens and $1.56 per million output tokens, and its weights are not open.

  • tool use
  • structured outputs
  • reasoning

At a glance

providerqwen
releasedFeb 16, 2026
context1M
input / M$0.26

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
1197 Elo2026-07-28
Design Arena Coding
1197 Elo2026-07-27
Design Arena Coding
1197 Elo2026-07-30
Design Arena Coding
1197 Elo2026-07-29
Design Arena Coding
1197 Elo2026-07-31
Design Arena Coding
1196 Elo2026-08-02
Design Arena Coding
1195 Elo2026-08-05
Design Arena Coding
1196 Elo2026-08-01
Design Arena Coding
1195 Elo2026-08-09
Design Arena Coding
1196 Elo2026-08-03
Design Arena Coding
1196 Elo2026-08-04
Design Arena Coding
1192 Elo2026-08-14
Design Arena Coding
1196 Elo2026-08-06
Design Arena Coding
1195 Elo2026-08-10
Design Arena Coding
1196 Elo2026-08-07
Design Arena Coding
1186 Elo2026-08-18
Design Arena Coding
1195 Elo2026-08-08
Design Arena Coding
1187 Elo2026-08-15
Design Arena Coding
1195 Elo2026-08-11
Design Arena Coding
1194 Elo2026-08-12
Design Arena Coding
1192 Elo2026-08-13
Design Arena Coding
1185 Elo2026-08-19
Design Arena Coding
1191 Elo2026-08-27
Design Arena Coding
1185 Elo2026-08-20
Design Arena Coding
1186 Elo2026-08-16
Design Arena Coding
1186 Elo2026-08-17
Design Arena Coding
1191 Elo2026-08-21
Design Arena Coding
1192 Elo2026-08-22
Design Arena Coding
1192 Elo2026-08-23
Design Arena Coding
1191 Elo2026-08-28
Design Arena Coding
1192 Elo2026-08-24
Design Arena Coding
1192 Elo2026-08-25
Design Arena Coding
1192 Elo2026-08-26
Design Arena Coding
1191 Elo2026-08-29
Design Arena Coding
1191 Elo2026-08-30
Design Arena Coding
1191 Elo2026-08-31
Design Arena Coding
1191 Elo2026-09-01
Design Arena Coding
1189 Elo2026-09-02
Design Arena Coding
1187 Elo2026-09-03
Design Arena Coding
1186 Elo2026-09-04
Design Arena UI
1213 Elo2026-07-28
Design Arena UI
1214 Elo2026-07-27
Design Arena UI
1213 Elo2026-07-30
Design Arena UI
1214 Elo2026-07-29
Design Arena UI
1213 Elo2026-07-31
Design Arena UI
1214 Elo2026-08-02
Design Arena UI
1214 Elo2026-08-01
Design Arena UI
1213 Elo2026-08-05
Design Arena UI
1210 Elo2026-08-09
Design Arena UI
1214 Elo2026-08-03
Design Arena UI
1213 Elo2026-08-04
Design Arena UI
1208 Elo2026-08-14
Design Arena UI
1213 Elo2026-08-06
Design Arena UI
1212 Elo2026-08-07
Design Arena UI
1211 Elo2026-08-10
Design Arena UI
1211 Elo2026-08-08
Design Arena UI
1208 Elo2026-08-18
Design Arena UI
1211 Elo2026-08-11
Design Arena UI
1209 Elo2026-08-15
Design Arena UI
1211 Elo2026-08-12
Design Arena UI
1211 Elo2026-08-13
Design Arena UI
1208 Elo2026-08-19
Design Arena UI
1209 Elo2026-08-16
Design Arena UI
1208 Elo2026-08-20
Design Arena UI
1204 Elo2026-08-27
Design Arena UI
1208 Elo2026-08-17
Design Arena UI
1204 Elo2026-08-21
Design Arena UI
1205 Elo2026-08-22
Design Arena UI
1205 Elo2026-08-23
Design Arena UI
1205 Elo2026-08-24
Design Arena UI
1204 Elo2026-08-28
Design Arena UI
1205 Elo2026-08-25
Design Arena UI
1205 Elo2026-08-26
Design Arena UI
1204 Elo2026-08-29
Design Arena UI
1204 Elo2026-08-30
Design Arena UI
1204 Elo2026-08-31
Design Arena UI
1204 Elo2026-09-01
Design Arena UI
1203 Elo2026-09-02
Design Arena UI
1201 Elo2026-09-03
Design Arena UI
1200 Elo2026-09-04
Design Arena Website
1212 Elo2026-07-28
Design Arena Website
1212 Elo2026-07-30
Design Arena Website
1212 Elo2026-07-27
Design Arena Website
1212 Elo2026-07-29
Design Arena Website
1212 Elo2026-07-31
Design Arena Website
1211 Elo2026-08-02
Design Arena Website
1211 Elo2026-08-01
Design Arena Website
1211 Elo2026-08-05
Design Arena Website
1211 Elo2026-08-03
Design Arena Website
1210 Elo2026-08-09
Design Arena Website
1211 Elo2026-08-04
Design Arena Website
1207 Elo2026-08-14
Design Arena Website
1211 Elo2026-08-06
Design Arena Website
1211 Elo2026-08-07
Design Arena Website
1210 Elo2026-08-10
Design Arena Website
1210 Elo2026-08-08
Design Arena Website
1199 Elo2026-08-18
Design Arena Website
1210 Elo2026-08-11
Design Arena Website
1199 Elo2026-08-15
Design Arena Website
1209 Elo2026-08-12
Design Arena Website
1207 Elo2026-08-13
Design Arena Website
1199 Elo2026-08-19
Design Arena Website
1199 Elo2026-08-16
Design Arena Website
1199 Elo2026-08-20
Design Arena Website
1207 Elo2026-08-27
Design Arena Website
1199 Elo2026-08-17
Design Arena Website
1207 Elo2026-08-21
Design Arena Website
1207 Elo2026-08-22
Design Arena Website
1207 Elo2026-08-23
Design Arena Website
1208 Elo2026-08-24
Design Arena Website
1207 Elo2026-08-28
Design Arena Website
1208 Elo2026-08-25
Design Arena Website
1208 Elo2026-08-26
Design Arena Website
1207 Elo2026-08-29
Design Arena Website
1207 Elo2026-08-30
Design Arena Website
1207 Elo2026-08-31
Design Arena Website
1207 Elo2026-09-01
Design Arena Website
1206 Elo2026-09-02
Design Arena Website
1204 Elo2026-09-03
Design Arena Website
1203 Elo2026-09-04

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

    60% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from LiveBench Coding or LMArena WebDev. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for CodingProvisional evidence

    24% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing from Aider Polyglot or LiveBench Coding. 8 of 8 configured evaluation feeds currently have results.

  • Best Cheap LLM for High VolumeProvisional evidence

    17% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LMArena Text. 3 of 4 configured evaluation feeds currently have results.

  • Cheapest Capable LLMProvisional evidence

    17% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LMArena Text. 3 of 4 configured evaluation feeds currently have results.

  • Best LLM for Fast SummariesProvisional evidence

    14% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LMArena Text. 3 of 4 configured evaluation feeds currently have results.

  • Best Value LLMProvisional evidence

    14% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LMArena Text. 3 of 4 configured evaluation feeds currently have results.

  • 13% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Data Analysis or Route reliability. 2 of 4 configured evaluation feeds currently have results.

  • Best LLM for Code CompletionProvisional evidence

    13% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Aider Polyglot or LiveBench Coding. 4 of 4 configured evaluation feeds currently have results.

  • 10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LiveBench Language. 4 of 5 configured evaluation feeds currently have results.

  • 10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LiveBench Language. 4 of 5 configured evaluation feeds currently have results.

  • Best LLM for TranslationProvisional evidence

    10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LiveBench Language. 4 of 5 configured evaluation feeds currently have results.

  • 10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Aider Polyglot or LiveBench Coding. 6 of 6 configured evaluation feeds currently have results.

  • 10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from FACTS Grounding or LiveBench Instruction Following. 4 of 6 configured evaluation feeds currently have results.

  • 10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or LMArena Agent. 4 of 5 configured evaluation feeds currently have results.

  • Best LLM for Business WritingProvisional evidence

    10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LMArena Creative Writing. 5 of 5 configured evaluation feeds currently have results.

  • 10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LiveBench Reasoning. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for Marketing CopyProvisional evidence

    10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LMArena Creative Writing. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for SummarizationProvisional evidence

    10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from FACTS Grounding or LiveBench Instruction Following. 4 of 6 configured evaluation feeds currently have results.

  • Best LLM for Chat & RoleplayProvisional evidence

    10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LiveBench Language. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for Creative WritingProvisional evidence

    10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LiveBench Language. 5 of 5 configured evaluation feeds currently have results.

  • 10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or LMArena Agent. 4 of 4 configured evaluation feeds currently have results.

  • Best LLM for OCR & DocumentsProvisional evidence

    10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LMArena Document or LMArena Vision. 3 of 5 configured evaluation feeds currently have results.

  • 10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Reasoning or LMArena Vision. 3 of 4 configured evaluation feeds currently have results.

  • 10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LMArena Document or LMArena Vision. 3 of 5 configured evaluation feeds currently have results.

  • Best LLM for WritingProvisional evidence

    10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LiveBench Language. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for Grounded RAGProvisional evidence

    10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from CRAG or FACTS Grounding. 2 of 5 configured evaluation feeds currently have results.

  • 10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LiveBench Language. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for Charts & DiagramsProvisional evidence

    10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LMArena Document or LMArena Vision. 3 of 5 configured evaluation feeds currently have results.

  • Best LLM for Document ParsingProvisional evidence

    10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LMArena Document or LMArena Vision. 3 of 5 configured evaluation feeds currently have results.

  • 10% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LiveBench Reasoning. 5 of 5 configured evaluation feeds currently have results.

  • 8% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Instruction Following or LMArena Text. 3 of 4 configured evaluation feeds currently have results.

  • Best LLM for Massive ContextProvisional evidence

    6% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LMArena Document or LMArena Long Query. 3 of 4 configured evaluation feeds currently have results.

  • Best LLM for Hermes AgentProvisional evidence

    6% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or LMArena Agent. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for OpenHandsProvisional evidence

    6% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or LMArena Agent. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for GooseProvisional evidence

    6% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or LMArena Agent. 5 of 5 configured evaluation feeds currently have results.

  • 6% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from FACTS Grounding or LMArena Document. 4 of 6 configured evaluation feeds currently have results.

  • Best LLM for OpenClawProvisional evidence

    6% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or LMArena Agent. 5 of 5 configured evaluation feeds currently have results.

  • 6% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or LiveBench Data Analysis. 4 of 5 configured evaluation feeds currently have results.

  • 6% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or LiveBench Data Analysis. 4 of 5 configured evaluation feeds currently have results.

  • Best Local LLM for CodingProvisional evidence

    6% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Aider Polyglot or LiveBench Coding. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for Competition MathProvisional evidence

    5% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Mathematics or LiveBench Reasoning. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for Agentic CodingProvisional evidence

    5% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Design Arena Full-stack or Design Arena Web-apps. 8 of 8 configured evaluation feeds currently have results.

  • Best LLM for Autonomous AgentsProvisional evidence

    5% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Frontier-Bench or LiveBench Agentic Coding. 7 of 7 configured evaluation feeds currently have results.

  • Best LLM for Math & ReasoningProvisional evidence

    5% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from LiveBench Mathematics or LiveBench Reasoning. 5 of 5 configured evaluation feeds currently have results.

  • Best LLM for AI AgentsProvisional evidence

    5% of intended weighted task evidence across 0 independent sources; broader independent confirmation is still missing from Berkeley Function Calling or LiveBench Agentic 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.