Qwen3.5 Plus API pricing
Official Qwen list price, last checked Oct 29, 2026. Updated Oct 29, 2026.
Qwen3.5 Plus costs $0.40 per 1M input tokens and $2.40 per 1M output tokens, and a 1M-token context window, per Qwen's official pricing page (checked Oct 29, 2026). It's priced in the middle of the pack: number 27 of 77 by blended price ($0.90 per 1M tokens at a 3 to 1 input to output mix). LMArena doesn't list it on the boards we track, so we don't rank its quality. For less, look at DeepSeek V4.1 Flash ($0.525 blended).
Qwen3.5 Plus price per million tokens
| Qwen3.5 Plus price per million tokens | USD |
|---|---|
| Input | $0.40 |
| Cached input | Not listed |
| Output | $2.40 |
| Blended, 3 parts input to 1 part output | $0.90 |
| Context window | 1M tokens |
| Prompts above 256K | $0.50 in, $3 out |
Official note from Qwen: International (Singapore). Prompts up to 256K. Longer prompts cost $0.50 in, $3 out.
What Qwen3.5 Plus costs for real work
List-price estimates for a month, no discounts. Our math, not a quote: change the token counts in the plan vs API calculator.
| Workload | Tokens a month | Qwen3.5 Plus | Gemini 3.5 Flash-Lite | DeepSeek V4.1 Flash |
|---|---|---|---|---|
| Light: a side project or personal assistant | 2M in, 0.5M out | $2.00 | $1.85 | $1.20 |
| Medium: a small team or one product feature | 20M in, 5M out | $20.00 | $18.50 | $12.00 |
| Heavy: a production app | 200M in, 50M out | $200 | $185 | $120 |
| Medium, every prompt above the long-prompt threshold | 20M in, 5M out | $25.00 | $18.50 | $12.00 |
How Qwen3.5 Plus ranks on LMArena
It isn't on any LMArena board we track as of Oct 29, 2026. We don't estimate quality for unranked models. See the best model for each task for ranked options.
Closest rivals to Qwen3.5 Plus
The models nearest in price, other makers first. Ranks are on LMArena, where we have them.
| Model | In / out | Blended | Verdict |
|---|---|---|---|
| Gemini 3.5 Flash-Lite | $0.30 / $2.50 | $0.85 | Gemini 3.5 Flash-Lite wins on price. Compare |
| GLM-4.7 | $0.60 / $2.20 | $1 | Qwen3.5 Plus wins on price. Compare |
| GLM-4.6 | $0.60 / $2.20 | $1 | Qwen3.5 Plus wins on price. Compare |
| Seed 2.1 Turbo | $0.50 / $2.50 | $1 | Qwen3.5 Plus wins on price. Compare |
Cheaper alternatives to Qwen3.5 Plus
At least 40% cheaper blended, cheapest at the bottom of the list we found.
| Model | In / out | Blended | Verdict |
|---|---|---|---|
| DeepSeek V4.1 Flash | $0.30 / $1.20 | $0.525 | DeepSeek V4.1 Flash wins on price. Compare |
| MiniMax-M3 | $0.30 / $1.20 | $0.525 | MiniMax-M3 wins on price. Compare |
| Step 3.7 Flash | $0.20 / $1.15 | $0.4375 | Step 3.7 Flash wins on price. Compare |
More from Qwen
- Qwen3.6 35B-A3B$0.375 in, $2.25 out per 1M
- Qwen3.5 27B$0.30 in, $2.40 out per 1M
- Qwen3.7 Plus$0.40 in, $1.60 out per 1M
- Qwen3.5 122B-A10B$0.40 in, $3.20 out per 1M
- Qwen3.5 35B-A3B$0.25 in, $2 out per 1M
FAQ
How much does the Qwen3.5 Plus API cost per million tokens?
$0.40 per 1M input tokens and $2.40 per 1M output tokens, as of Oct 29, 2026. A typical 3 to 1 input to output mix works out to $0.90 per 1M tokens.
Does Qwen3.5 Plus charge more for long prompts?
Yes. Prompts above 256K: $0.50 in, $3 out.
Is Qwen3.5 Plus cheaper than Gemini 3.5 Flash-Lite?
No. A medium month (20M input and 5M output tokens) costs $20.00 on Qwen3.5 Plus and $18.50 on Gemini 3.5 Flash-Lite at list price.
How does Qwen3.5 Plus rank on LMArena?
It isn't listed on the LMArena boards we track, so we show no quality rank rather than guess.
What is a cheaper alternative to Qwen3.5 Plus?
DeepSeek V4.1 Flash costs $0.30 in and $1.20 out per 1M tokens, about 1.7x less blended.
Where does this Qwen3.5 Plus price come from?
From Qwen's official pricing page, which we check every day. This page was last checked Oct 29, 2026.