MODELS / ALIBABA

Qwen 3.5 Flash

The Qwen3.5 native vision-language Flash models are built on a hybrid architecture that integrates a linear attention mechanism with a sparse mixture-of-experts model, achieving higher inference efficiency. Compared to the 3 series, these models deliver a leap forward in…

TEXTREASONINGVISIONFILE-INPUTREASONINGTOOL-USE
1M
CONTEXT WINDOW
64K
MAX OUTPUT TOKENS
$0.1
INPUT PRICE / 1M TOKENS
$0.4
OUTPUT PRICE / 1M TOKENS
QUICKSTART

Call it in one request.

OpenAI-compatible: change the base URL, and the setup is complete.

curl https://enterprise.blackbox.ai/v1/chat/completions \
  -H "Authorization: Bearer $BLACKBOX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "blackboxai/alibaba/qwen3.5-flash",
    "messages": [{ "role": "user", "content": "Hello!" }],
    "stream": true
  }'
SPECIFICATIONS

The full spec sheet.

Context, pricing, modalities, routing, and deployment: everything Qwen 3.5 Flash supports, in one table.

MODEL ID
blackboxai/alibaba/qwen3.5-flash
DEVELOPED BY
Alibaba
MODEL TYPE
Text
RELEASED
Feb 24, 2026
CONTEXT WINDOW
1M
MAX OUTPUT TOKENS
64K
INPUT MODALITIES
text, image, pdf
OUTPUT MODALITIES
text
INPUT PRICE
$0.1 / 1M tokens
OUTPUT PRICE
$0.4 / 1M tokens
CACHE READ
$0.001 / 1M tokens
CACHE WRITE
$0.125 / 1M tokens
REASONING
Supported
DATA RETENTION
Standard retention
DEDICATED DEPLOYMENT
Enterprise · single-tenant
SUPPORTED PARAMETERS
max_tokenstemperaturestoptoolstool_choicereasoninginclude_reasoning