Qwen3.8 Max API pricing

Call qwen3.8-max through RouterPlex's OpenAI-compatible API — vendor list price, 0% markup, billed per token from a prepaid balance. No subscription required.

On cost it sits in the mid-range band of the catalog: the 23rd cheapest of 38 comparable text models, at about $0.26 per 100K-in / 10K-out agent turn — cheaper than 14 others on the same key. Its 1M context window ranks 5th of 38.

Input / 1M tokens
$2.00
Output / 1M tokens
$6.00
Context window
1M
Provider
Alibaba

Alibaba publishes a discounted cache-read tier for this model. RouterPlex does not pass a separate cache tier through yet, so cached prompt tokens are billed at the standard $2 input rate.

Example request costs

These examples apply the published input and output token rates directly. Actual cost depends on the tokens your client sends and the model returns.

Short request
$0.026

10K input + 1K output tokens

Agent turn
$0.26

100K input + 10K output tokens

Cheaper and pricier on the same key.

Every model below runs through the same endpoint and the same API key, so moving between them is a one-line model ID change. Costs are for the same 100K-in / 10K-out turn.

Quality is a separate question from price — see Qwen3.8 Max benchmark results before optimising on cost alone. Qwen3.8 Max reads images; for generating them see GPT Image 2 pricing.

Use it in one request.

curl https://api.routerplex.com/v1/chat/completions \
  -H "Authorization: Bearer $ROUTERPLEX_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "qwen3.8-max",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Works with any OpenAI SDK or tool — just change the base URL. See the quickstart.

Common questions.

How much does the Qwen3.8 Max API cost?

Through RouterPlex, Qwen3.8 Max costs $2.00 per 1M input tokens and $6.00 per 1M output tokens — the vendor list price with 0% markup, billed per token from a prepaid balance you top up from $5. Alibaba publishes a discounted cache-read tier for this model. RouterPlex does not pass a separate cache tier through yet, so cached prompt tokens are billed at the standard $2 input rate.

What does one Qwen3.8 Max agent turn cost?

A 100K-token input with a 10K-token reply costs about $0.26 on Qwen3.8 Max. That makes it the 23rd cheapest of 38 comparable text models on RouterPlex, roughly 24.1× the cost of the cheapest option (DeepSeek V4 Flash).

What is a cheaper alternative to Qwen3.8 Max?

Gemini 3.5 Flash from Google is the closest cheaper model on RouterPlex — $0.24 per agent turn against $0.26 for Qwen3.8 Max, at $1.50/1M input and $9.00/1M output. Both run on the same key and the same endpoint, so switching is a one-line model ID change.

Is Qwen3.8 Max cheaper than Claude Sonnet 5?

Yes. Per agent turn, Qwen3.8 Max costs about $0.26 against $0.30 for Claude Sonnet 5 — 13% less.

What is the context window of Qwen3.8 Max?

Qwen3.8 Max supports a 1M token context window on RouterPlex, the 5th largest of the 38 models that publish one.

Can I use Qwen3.8 Max with the OpenAI SDK?

Yes. RouterPlex serves Qwen3.8 Max through an OpenAI-compatible endpoint at https://api.routerplex.com/v1 — point any OpenAI SDK or tool at that base URL with your RouterPlex key and set model to "qwen3.8-max".

More from Alibaba.

Compare current API prices and context windows before changing the model ID.

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Qwen3.8 Max API Pricing · RouterPlex