Qwen3.5 Plus

Chat

Built by Alibaba (Qwen) · China · qwen.ai

Alibaba (Qwen) chat model.

How to use

model: "qwen/qwen3.5-plus"

Cap quality here and save

Hard questions go to this model, easy ones drop to something cheaper. Set a savings target (0–0.8) and the router tunes itself until realized savings converge on it.

{
  "model": "celon/auto",
  "celon": {
    "anchor": "qwen/qwen3.5-plus",
    "savings_target": 0.4
  }
}

Naming a model directly gets you that model — savings controls don't apply.

Context

Max output

—

Input $/1M

$0.40

Output $/1M

$2.40

Features

—

Serving providers

Novita

Providers

Price, latency, and uptime per provider serving this model. Celon routes each request to the fastest and cheapest of them. Click a row for regions and data policies.

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Performance

Benchmark quality scores, and measured speed per provider.

Quality

Epoch Capabilities IndexComposite over 50+ benchmarks

146.9

GPQA DiamondPhD-level science questions

84.2%

AIMECompetition mathematics

85.0%

FrontierMathResearch-level mathematics

21.0%

SimpleQA VerifiedFactual accuracy

26.0%

At each model's best reasoning effort. Benchmarks it wasn't run on are omitted.

Speed

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