Which is cheaper, Qwen 2.5 72B Instruct or Qwen3.5 Flash?
Qwen 2.5 72B Instruct lists at $0.9/M input; Qwen3.5 Flash lists at $0.1/M input. Price spread matters at billion-token scale.
Gateway catalog snapshot.
Qwen3.5 Flash is cheaper at $0.1/M input vs $0.9/M input for Qwen 2.5 72B Instruct. Compare context, hosts, and o10 routing bands.
Last updated: 2026-06-27. Full catalog. Reference prices are dated snapshots. Compare total cost and measured task quality before choosing a route.
Qwen 2.5 72B Instruct vs Qwen3.5 Flash. Price, context, routing
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AnswersSelf-contained
How do Qwen 2.5 72B Instruct and Qwen3.5 Flash context windows compare?
Qwen 2.5 72B Instruct: 128,000 tokens. Qwen3.5 Flash: 1,000,000 tokens.
When should you pick Qwen 2.5 72B Instruct over Qwen3.5 Flash?
Pick Qwen 2.5 72B Instruct (band C1) when evals need that class. Pick Qwen3.5 Flash (band C2) when it clears the same floor cheaper.
01Deep dive
Comparison summary
Qwen3.5 Flash is cheaper at $0.1/M input vs $0.9/M input for Qwen 2.5 72B Instruct. Compare context, hosts, and o10 routing bands.
Qwen3.5 Flash is cheaper at $0.1/M input vs $0.9/M input for Qwen 2.5 72B Instruct. Compare context, hosts, and o10 routing bands.
SourceMethodology
o10 gateway + fulfillment catalog snapshot.
FAQFrequently asked questions
Common questions
Which is cheaper, Qwen 2.5 72B Instruct or Qwen3.5 Flash?
Qwen3.5 Flash at $0.1/M input vs $0.9/M for Qwen 2.5 72B Instruct.
Can you run both on the same hosts?
Qwen 2.5 72B Instruct: OpenRouter. Qwen3.5 Flash: Alibaba DashScope.