Qwen3.5 Plus 2026-02-15
ModelActiveby Alibaba (Qwen) · family “qwen3-plus”
The Qwen3.5 native vision-language series Plus models are built on a hybrid architecture that integrates linear attention mechanisms with sparse mixture-of-experts models, achieving higher inference efficiency. In a variety of... (description from the OpenRouter listing)
in: textin: imagein: videoout: textReasoningTool useStructured output
Epoch Capabilities Index
Not scored by Epoch AI
Released
16 Feb 2026
Context window
1M tokens
Max output
66K tokens
Input $ / 1M tokens
$0.26
Output $ / 1M tokens
$1.56
Cached input $ / 1M
Unknown
Each benchmark shown separately with its own source
Benchmark results (11)
| Benchmark | Domain | Score | vs best recorded | Setting | Run | Source |
|---|---|---|---|---|---|---|
| LMCA | agents | 36.4% | 53% | — | — | External ↗ |
| DTBench | reasoning | 80.5% | 81% | — | — | External ↗ |
| Mystery Game Puzzles | games | 17.0% ±3.8 | 20% | none | 27 Aug 2026 | Epoch ↗ |
| CL-bench Life | long-context | 12.4% | 56% | — | — | External ↗ |
| CL-bench | long-context | 19.8% | 71% | — | — | External ↗ |
| Chess Puzzles | games | 22.0% ±4.2 | 31% | — | 7 Aug 2026 | Eval log ↗ |
| SimpleQA Verified | knowledge | 25.4% ±1.4 | 34% | — | 27 Aug 2026 | Eval log ↗ |
| FrontierMath-Tier-4-2025-07-01-Privatesuperseded | math | 2.1% ±2.1 | 4% | — | 15 May 2026 | Epoch ↗ |
| FrontierMath-2025-02-28-Privatesuperseded | math | 21.0% ±2.4 | 40% | — | 14 May 2026 | Epoch ↗ |
| OTIS Mock AIME 2024-2025 | math | 86.7% ±5.1 | 87% | — | 7 Aug 2026 | Eval log ↗ |
| GPQA diamond | science | 84.8% ±2.6 | 89% | — | 7 Aug 2026 | Eval log ↗ |
Source: Epoch AI Benchmarking Hub (CC BY 4.0). “External” rows are leaderboard results Epoch collects from third parties. Best reported setting per benchmark is shown.
API list price over time
Price history
$ per 1M tokens
8 recorded prices on 3 Mar 2026 (OpenRouter listing + Internet Archive snapshots); re-read on every data refresh, most recently 10h ago. Steps show when the price changed.
Events
- BenchmarkEpoch AI evaluates Qwen3.5 Plus 2026-02-15Epoch AI Benchmarking Hub
- Model launchMajorQwen releases Qwen3.5 Plus 2026-02-15OpenRouter models API