Antimatter
Qwen

Qwen3.5 Plus 2026-04-20

qwen/qwen3.5-plus-20260420

Qwen3.5 Plus (April 2026) is a large-scale multimodal language model from Alibaba.

$0.33 in · $1.98 out per 1M tokens1M contextApr 27, 2026

about 0.1¢ a message

A typical message: about 500 tokens you send and 500 it writes.

Chat with Qwen3.5 Plus 2026-04-20
Call it from codeLock this price

Spec sheet

Published facts from the catalog, billed prices and what we measured here. Anything not measured says so.

Price, billed here

Input, per 1M tokens
$0.33provider $0.30
Output, per 1M tokens
$1.98provider $1.80
Cache write, per 1M
$0.4125provider $0.375
Margin
+10%

Context and formats

Context window
1,000,000 tokens
Longest answer
65,536 tokens
Reads
text, images, and video
Makes
text
First listed
2026-04-27

Measured here, last 7 days

First token, median
not measured
Answered without error
not measured

Tools and JSON

Tool calling
declaredthe provider's claim, not yet measured here
JSON output
declaredthe provider's claim, not yet measured here

Price and latency history as JSON: GET /api/planet/history?id=qwen/qwen3.5-plus-20260420.

About

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...

In Qwen's words.

Try it here

The answer appears here.

Measured here

Call it

Use one OpenAI compatible endpoint, this model's id and an am_live_ key from the dashboard. You can also try it in chat first with no key.

curl https://useantimatter.com/v1/chat/completions \
  -H "Authorization: Bearer $ANTIMATTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "qwen/qwen3.5-plus-20260420", "messages": [{"role": "user", "content": "Hello"}]}'

Everything else is in the docs.

Embed this

A badge showing this model's live price per million tokens, as billed here, for a README or a site. It links back to this page.

Qwen3.5 Plus 2026-04-20 price on Antimatter
<a href="https://useantimatter.com/planet/qwen/qwen3.5-plus-20260420"><img src="https://useantimatter.com/api/badge/price?id=qwen%2Fqwen3.5-plus-20260420" alt="Qwen3.5 Plus 2026-04-20 price on Antimatter" height="28"></a>

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