Qwen3.5 Flash API pricing
Official Qwen list price, last checked Oct 29, 2026. Updated Oct 29, 2026.
Qwen3.5 Flash costs $0.10 per 1M input tokens and $0.40 per 1M output tokens, and a 1M-token context window, per Qwen's official pricing page (checked Oct 29, 2026). It's one of the cheapest models we track: number 3 of 77 by blended price ($0.175 per 1M tokens at a 3 to 1 input to output mix). On LMArena's Code Arena it ranks #50 of 50 models we price (relative score 0 out of 100). Nothing on our list is much cheaper.
Qwen3.5 Flash price per million tokens
| Qwen3.5 Flash price per million tokens | USD |
|---|---|
| Input | $0.10 |
| Cached input | Not listed |
| Output | $0.40 |
| Blended, 3 parts input to 1 part output | $0.175 |
| Context window | 1M tokens |
Official note from Qwen: International (Singapore). Alibaba lists the cache-hit price only in the Model Studio console.
What Qwen3.5 Flash 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 Flash | Seed 2.0 Mini |
|---|---|---|---|
| Light: a side project or personal assistant | 2M in, 0.5M out | $0.40 | $0.40 |
| Medium: a small team or one product feature | 20M in, 5M out | $4.00 | $4.00 |
| Heavy: a production app | 200M in, 50M out | $40.00 | $40.00 |
How Qwen3.5 Flash ranks on LMArena
Relative score: 100 is the top model we price on that board. Rank is among the models in our price table, not the full leaderboard.
| Board | Rank | Score /100 |
|---|---|---|
| Coding (Code Arena) | #50 of 50 | 0 |
| Chat (Text Arena) | #49 of 51 | 0 |
| Creative writing (Text Arena creative writing) | #51 of 51 | 0 |
| Roleplay and characters (Text Arena multi-turn) | #50 of 51 | 0 |
| Reasoning and math (Text Arena math) | #50 of 51 | 0 |
Closest rivals to Qwen3.5 Flash
The models nearest in price, other makers first. Ranks are on Code Arena, where we have them.
| Model | In / out | Blended | Verdict |
|---|---|---|---|
| Seed 2.0 Mini | $0.10 / $0.40 | $0.175 | Same price, no score to separate them. Compare |
| MiMo-V2.6 Flash | $0.14 / $0.28 | $0.175 | MiMo-V2.6 Flash wins: same price, higher score. Compare |
| ERNIE 4.5 Turbo | $0.11 / $0.45 | $0.195 | Qwen3.5 Flash wins on price. Compare |
| GPT-6 Luna | $0.10 / $0.50 | $0.20 | GPT-6 Luna for quality, Qwen3.5 Flash for price. Compare |
Cheaper alternatives to Qwen3.5 Flash
Nothing in our table is at least 40% cheaper blended. See the cheapest LLM API ranking for the low end.
More from Qwen
- Qwen3.8 Flash$0.15 in, $0.47 out per 1M
- Qwen3.7 Flash$0.03 in, $0.13 out per 1M
- Qwen3.6 Flash$0.25 in, $1.50 out per 1M
- Qwen3 Coder Flash$0.30 in, $1.50 out per 1M
- Qwen3.5 35B-A3B$0.25 in, $2 out per 1M
FAQ
How much does the Qwen3.5 Flash API cost per million tokens?
$0.10 per 1M input tokens and $0.40 per 1M output tokens, as of Oct 29, 2026. A typical 3 to 1 input to output mix works out to $0.175 per 1M tokens.
Does Qwen3.5 Flash charge more for long prompts?
Qwen doesn't list a long-prompt surcharge for Qwen3.5 Flash. Its pricing note says: International (Singapore). Alibaba lists the cache-hit price only in the Model Studio console.
Is Qwen3.5 Flash cheaper than Seed 2.0 Mini?
About the same. A medium month (20M input and 5M output tokens) costs $4.00 on Qwen3.5 Flash and $4.00 on Seed 2.0 Mini at list price. On Code Arena, Qwen3.5 Flash ranks #50 and Seed 2.0 Mini isn't ranked.
How does Qwen3.5 Flash rank on LMArena?
On Code Arena it is #50 of 50 models we price, with a relative score of 0 out of 100. It ranks on 5 of 8 boards we track.
What is a cheaper alternative to Qwen3.5 Flash?
Few models undercut it by much. The next closest in price is Seed 2.0 Mini at $0.175 blended.
Where does this Qwen3.5 Flash price come from?
From Qwen's official pricing page, which we check every day. This page was last checked Oct 29, 2026.