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Qwen: Qwen3.8 Max Prime

qwen3.8-max-prime

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Qwen3.8 Max Prime costs $5.20 per million input tokens and $15.60 per million output tokens, supports 1M context, and is available through the OpenAI-compatible API.

Qwen3.8 Max Prime is a higher-throughput variant of Qwen3.8 Max for coding, complex analysis, and long-running agent workflows. It accepts text, image, and video input, supports tool calling and structured output, and has a 1M-token context window. Reasoning is always enabled.

Modalities

Text + Image + Video → Text

Input / output price

$5.20 / $15.60 per 1M

Context

1M · max output 131K

Capabilities

ReasoningVisionTool callingLong contextOpen weights

Pricing

Billed per token actually used and deducted from your credits.

ItemUSD per 1M tokens
Input$5.20
Output$15.60
Cached input$0.650

Calculator

Drag the sliders to estimate what this model will cost.

Per request
$0.0281
Per day
$14.04
Per month (30 days)
$421.20

Qwen3.8 Max Prime: input $5.2/M · output $15.6/M · cached input $0.65/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": "qwen3.8-max-prime", "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 qwen3.8-max-prime.

curl https://api.geniusrelaygpt.com/v1/chat/completions \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "qwen3.8-max-prime",
    "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 Qwen3.8 Max Prime billed?
Input is $5.20 and output is $15.60 per million tokens; cached input is $0.650. The charge for every request is listed in Usage Logs in the console.
How long is the context window?
1M 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.
Qwen3.8 Max Prime API pricing · GeniusRelay