Qwen1.5vsQwen3.5-Plus
Qwen1.5 | Qwen3.5-Plus | |
|---|---|---|
| Specifications | ||
Parameters | 72B | — |
Context window | 32k | 1M |
| Overview | ||
| Company | Qwen | Qwen |
| Release date | Feb 4 2024 | Feb 16 2026 |
| Access | Open Weight | Proprietary |
Which is better: Qwen1.5 or Qwen3.5-Plus?
Qwen1.5 and Qwen3.5-Plus don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Qwen1.5 shipped 743 days before Qwen3.5-Plus, so benchmark comparisons should account for the intervening progress.
Context windows are 32k (Qwen1.5) vs 1M (Qwen3.5-Plus). Qwen1.5 is open weight, while Qwen3.5-Plus is proprietary.
Direct benchmark comparisons are unavailable — Qwen1.5 and Qwen3.5-Plus don't publish scores on any of the same benchmarks.
Frequently asked questions
Qwen1.5 was released by Qwen on Feb 4 2024.
Qwen3.5-Plus was released by Qwen on Feb 16 2026.
Qwen1.5 has a 32k context window; Qwen3.5-Plus has 1M.
Qwen1.5 is an open weight model released by Qwen. Qwen3.5-Plus is a proprietary model released by Qwen.
Other comparisons
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