Compare / Qwen3.5-Plus (2026-02-15) vs Qwen3.6-Plus
Qwen3.5-Plus (2026-02-15) vs Qwen3.6-Plus
Which is cheaper, which is more capable, and which does better at each kind of work, from 2 results on 2 sources that measured both models.
Results as of 8 October 2026 (catalogue release 2026-10-08-4199ce0620fe).
Qwen3.5-Plus (2026-02-15) or Qwen3.6-Plus? The short answer
Qwen3.6-Plus is the newer version; they score about the same, so pick Qwen3.5-Plus (2026-02-15), which costs less (20% less per token).
- Qwen3.5-Plus (2026-02-15) is cheaper: $0.58 against $0.73 per million tokens, 20% less.
- Qwen3.6-Plus is newer: released 31 Mar 2026, against 16 Feb 2026 for Qwen3.5-Plus (2026-02-15).
- On third-party benchmarks, on the results both models have: Qwen3.6-Plus does better for agents and tool use and sticking to the facts.
At a glance
| Qwen3.5-Plus (2026-02-15) | Qwen3.6-Plus | |
|---|---|---|
| Price per million tokens | $0.26 in · $1.56 out | $0.33 in · $1.95 out |
| Blended (3 in : 1 out) | $0.58 | $0.73 |
| Cheapest host, blended | – | – |
| Intelligence Index | – | 27.0 |
| Spring Prompt overall | – | – |
| Output speed, tokens a second | – | – |
| Context window | 1,000,000 tokens | 1,000,000 tokens |
| Released | 16 Feb 2026 | 31 Mar 2026 (newer) |
| Weights | Closed | Closed |
| Developer based in | China | China |
Prices are the developer's list price where we have read it, otherwise the typical host on OpenRouter; see every model's price. Intelligence and speed from Artificial Analysis.
Which is better for what
Each model's rank among models available today, for each kind of work, from our own benchmarks and licensed sources. The better rank is in green.
| Use case | Qwen3.5-Plus (2026-02-15) | Qwen3.6-Plus |
|---|---|---|
| Agents and tool useMulti-step tasks with tools: support desks, coding agents, function calls | 160 of 164 | 63 of 164 |
| Reasoning and knowledgeHard questions across science, maths and general knowledge | not measured | 67 of 198 |
| WritingWhat people prefer in blind comparisons, and judged writing quality | not measured | 54 of 188 |
| Sticking to the factsSummarising without inventing things, and factual answers | 115 of 152 | 80 of 152 |
Every shared result
Each model's best result on every measure both have, grouped by benchmark, with the setting that produced it. The headline measures of each benchmark come first; the rest are under "Show all". Green marks the better value; where a source reports ranges that overlap, neither is marked.
| Measure | Qwen3.5-Plus (2026-02-15) | Qwen3.6-Plus |
|---|---|---|
| SimpleQA Verified (Epoch AI) reported by SimpleQA Verified (Epoch AI) · 1 result | ||
| Correct answers% of questions, higher is better | 25.4% | 44.1% |
| Vending-Bench 2 reported by Vending-Bench 2 · 1 result | ||
| Money after a yearUS dollars, higher is better | $0.54 | $5,115 |
Quick answers
Is Qwen3.5-Plus (2026-02-15) better than Qwen3.6-Plus?
Qwen3.6-Plus is the newer version; they score about the same, so pick Qwen3.5-Plus (2026-02-15), which costs less (20% less per token).
Which is cheaper, Qwen3.5-Plus (2026-02-15) or Qwen3.6-Plus?
Qwen3.5-Plus (2026-02-15) is cheaper: $0.58 against $0.73 per million tokens, 20% less.
Run Qwen3.5-Plus (2026-02-15) and Qwen3.6-Plus on your own prompt
Benchmarks aren't your data. Try both side by side in the playground, with the cost of every answer.