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Classify · 1 checks · max 200 tokens · benched 2026-09-16

Qwen3.8 Max (0902) vs Qwen3.8 27B vs Qwen3.8 Flash vs Qwen3.7 Plus on single message intent

Alibaba models side by side on "Single message intent": Qwen3.8 Flash scores 10/10; Qwen3.8 Flash is the cheapest answer scoring 8+ at $0.05 per 1,000 runs. Outputs, checks, judge reasons, latency and cost.

The prompt every model received

System

You are a classifier. Reply with exactly one label and nothing else.

User

Choose the single best intent for the message from this list: cancel_subscription, upgrade_plan, billing_question, technical_issue, other. Reply with only the label.

Message: "Hi, my card was charged $49 on the 3rd but my plan page says I'm on the $29 tier. Which one am I actually paying for?"

Rubric for the judge: Exactly the label billing_question with no punctuation or explanation.

Side by side

Every cell is one OpenRouter call at temperature 0 with the prompt's token cap and reasoning effort "low" where the model supports it. Cost is usage × the catalogue rate in models.json. Quality is one judge call to anthropic/claude-haiku-4.5 against the prompt's rubric, cached per prompt version.

Qwen3.8 Max (0902)

qwen/qwen3.8-max-0902

10/10
Latency
1.6s
Cost
$0.00110
Per 1,000
$1.10

127 in · 141 out (136 reasoning) · 1 words · checks 1/1

  • exact
billing_question

Judge: Output is exactly 'billing_question' with no punctuation or explanation, perfectly matching the rubric requirements.

Qwen3.8 27B

qwen/qwen3.8-27b

10/10
Latency
10.7s
Cost
$0.00018
Per 1,000
$0.18

127 in · 62 out (57 reasoning) · 1 words · checks 1/1

  • exact


billing_question

Judge: Output is exactly 'billing_question' with no punctuation or explanation, perfectly matching the rubric requirements.

Qwen3.8 Flash

qwen/qwen3.8-flash

10/10
top judge scorecheapest scoring 8+
Latency
844ms
Cost
$4.8e-5
Per 1,000
$0.05

139 in · 57 out (52 reasoning) · 1 words · checks 1/1

  • exact
billing_question

Judge: Output is exactly 'billing_question' with no punctuation or explanation, perfectly matching the rubric requirements.

Qwen3.7 Plus

qwen/qwen3.7-plus

10/10
Latency
2.1s
Cost
$0.00051
Per 1,000
$0.51

101 in · 373 out (368 reasoning) · 1 words · checks 1/1

  • exact
billing_question

Judge: Output is exactly 'billing_question' with no punctuation or explanation, perfectly matching the rubric requirements.

Frequently asked

What does this prompt test?

Classify: Exactly the label billing_question with no punctuation or explanation. The deterministic checks are exact.

Which model should I pick for this task?

If the judge's bar of 8/10 is good enough for you, Qwen3.8 Flash at $0.05 per 1,000 runs. If you need the top score, Qwen3.8 Flash at $0.05 per 1,000 runs.

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