GeniusRelay
Sign upConsole

Qwen: Qwen3.5 27B Thinking

qwen3.5-27b:thinking

CompareAPIGet an API keyGet an API key

Qwen3.5 27B Thinking costs $0.260 per million input tokens and $2.27 per million output tokens, supports 260K context, and is available through the OpenAI-compatible API.

Qwen3.5 27B with extended reasoning enabled. A native vision-language dense model optimized for fast responses.

Modalities

Text + Image + Video → Text

Input / output price

$0.260 / $2.27 per 1M

Context

260K · max output 66K

Capabilities

ReasoningVisionTool callingLong contextOpen weights

Pricing

Billed per token actually used and deducted from your credits.

ItemUSD per 1M tokens
Input$0.260
Output$2.27
Cached input$0.026

Calculator

Drag the sliders to estimate what this model will cost.

Per request
$0.00260
Per day
$1.30
Per month (30 days)
$39.00

Qwen3.5 27B Thinking: input $0.26/M · output $2.275/M · cached input $0.026/M

Request with these settings
curl https://api.geniusrelaygpt.com/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "qwen3.5-27b:thinking", "max_tokens": 800,
       "messages": [{"role": "user", "content": "…"}]}'

Code samples

OpenAI-compatible. Set the base URL to https://api.geniusrelaygpt.com/v1 and the model to qwen3.5-27b:thinking.

curl https://api.geniusrelaygpt.com/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "qwen3.5-27b:thinking",
    "stream": true,
    "messages": [{"role": "user", "content": "Hello"}]
  }'

Use it in a client: Cursor · Cline · SillyTavern · Codex

Parameters

Common OpenAI parameters can be passed as-is.

temperaturetop_pmax_tokensstreamstoppresence_penaltyfrequency_penaltyseed

FAQ

How is Qwen3.5 27B Thinking billed?
Input is $0.260 and output is $2.27 per million tokens; cached input is $0.026. The charge for every request is listed in Usage Logs in the console.
How long is the context window?
260K tokens. In a long conversation every turn is billed for the full input, so keep the history under control.
Does it support streaming?
Yes. Add "stream": true to the request to receive server-sent events in the OpenAI format.
Qwen3.5 27B Thinking API pricing · GeniusRelay