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Qwen: Qwen3.5 Plus 2026-04-20

Source description (English)

Qwen3.5 Plus (April 2026) is a large-scale multimodal language model from Alibaba. It accepts text, image, and video input and produces text output, with a 1M token context window. This...

Overview

Model specifications

Context
1,000,000 tokens
Maximum output
65,536 tokens
Architecture
text+image+video->text
Tokenizer
Qwen3
Knowledge cutoff
Not provided
Moderated
No
OPENROUTER

Complete pricing

Synchronized OpenRouter rates. Token prices are shown per one million tokens.

Input
$0.3
per 1M tokens
  • ≤256K$0.3
  • >256K$0.375
Output
$1.8
per 1M tokens
  • ≤256K$1.8
  • >256K$2.25
Cache write
$0.375
per 1M tokens
  • ≤256K$0.375
  • >256K$0.4688
API

Model configuration

Reasoning

Reasoning required
No
Default parameters
No
API

Quick start

Set OPENROUTER_API_KEY locally. Python requires requests; JavaScript runs in Node.js. Keep the key on the server.

API documentation

curl --fail-with-body https://openrouter.ai/api/v1/chat/completions \
  -H "Authorization: Bearer $OPENROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"qwen/qwen3.5-plus-20260420","messages":[{"role":"user","content":"Hello!"}]}'
Capabilities

InputOutput

Input
textimagevideo
Output
text
Reasoning

No

API

Supported API parameters

frequency_penaltyinclude_reasoninglogprobsmax_tokenspresence_penaltyreasoningresponse_formatseedstopstructured_outputstemperaturetool_choicetoolstop_ktop_logprobstop_p
Available providers

1 Provider

Checked: September 7, 2026

Live providers on OpenRouter

Provider availability, latency, throughput and routing can change continuously. Open the source page for current operational data.

OpenRouter

Alibaba

Not provided
Context
1M
Maximum output
66K
Input
$0.3
Output
$1.8
Cache read
Not provided
Cache write
$0.375
qwen

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