# Alibaba Qwen3.8 Max Prime API

> Qwen3.8 Max Prime is the Fast mode (Prime) serving option for Alibaba's Qwen3.8 Max: the same model with the same vision input and reasoning, delivered at higher output speed. Alibaba states Fast mode raises tokens per second to about 1.5 to 2 times the standard API, aimed at latency-sensitive uses such as AI coding assistants, multi-step agent reasoning and real-time conversation. Pick it over standard Qwen3.8 Max when response speed matters; it adds no new capabilities.

Source: https://www.sandbase.ai/models/alibaba/qwen3.8-max-prime
API reference: https://www.sandbase.ai/models/alibaba/qwen3.8-max-prime/docs

## Facts

- Provider: Alibaba
- Type: Language model
- Model ID: `alibaba/qwen3.8-max-prime`
- Price: $4 per 1M input tokens, $12 per 1M output tokens
- Context window: 1M tokens, up to 131.1K output tokens
- Capabilities: chat, vision, reasoning, structured output, function calling
- Billing: pay per use from one SandBase balance; no provider account or subscription needed

## Call it

- Chat Completions API: `POST https://api.sandbase.ai/v1/chat/completions`

```bash
curl -X POST https://api.sandbase.ai/v1/chat/completions \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "alibaba/qwen3.8-max-prime",
  "messages": [
    {
      "role": "user",
      "content": "Hello"
    }
  ],
  "max_tokens": 2048
}'
```

## FAQ

### How do I call Alibaba Qwen3.8 Max Prime through SandBase?

Create a SandBase API key, then send requests with the model ID "alibaba/qwen3.8-max-prime" to Chat Completions API (/v1/chat/completions) at https://api.sandbase.ai. The request examples on this page show the exact payload.

### How much does Alibaba Qwen3.8 Max Prime cost?

$4 per 1M input tokens and $12 per 1M output tokens, billed per request from your SandBase balance. Discounts, when available, are shown in the pricing on this page.

### What is the context window of Alibaba Qwen3.8 Max Prime?

1M tokens of context, with up to 131.1K output tokens per response.

### Which features does Alibaba Qwen3.8 Max Prime support?

Alibaba Qwen3.8 Max Prime supports vision (image input), reasoning, function calling, structured output. See Specifications above for the full list.

### Do I need a separate Alibaba account?

No. One SandBase API key and balance gives you access to Alibaba Qwen3.8 Max Prime and the other models in the catalog; you do not need to sign up with Alibaba separately.