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Qwen3.5 Plus

qwenqwen/qwen3.5-plus

Qwen3.5 Plus — successor to Qwen Plus. 1M context with tiered pricing.

Context Length
1M
Max Output
8K
Input Priceper 1M tokens
$0.432/ 1M tokens
Output Priceper 1M tokens
$2.59/ 1M tokens

Modalities

text→text

Pricing Breakdown

TypeRate
Prompts up to 256K tokens
Input$0.432 / 1M tokens
Output$2.59 / 1M tokens
Cached input$0.432 / 1M tokens
Prompts over 256K tokens
Input$0.540 / 1M tokens
Output$3.24 / 1M tokens
Cached input$0.540 / 1M tokens

Tiered pricing: when a request's prompt (input, cached tokens included) is over 256K tokens, every token in that request is billed at the long-context rates; exactly 256K is still the base rate. This model publishes no separate cached-input price: cached tokens are billed at the input rate of their group (the "Cached input" row shows that rate).

Supported Parameters

temperaturemax_tokenstop_ptoolstool_choiceresponse_formatstop

API Usage Examples

Use the global api.therouter.ai endpoint shown below for new integrations; the legacy China accelerated endpoint is retired.

cURL
curl https://api.therouter.ai/v1/chat/completions   -H "Content-Type: application/json"   -H "Authorization: Bearer $THE_ROUTER_API_KEY"   -d '{
    "model": "qwen/qwen3.5-plus",
    "messages": [
      {"role": "user", "content": "Summarize the key points from this input."}
    ]
  }'
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