# DeepSeek V4 Pro 0813 API

> DeepSeek V4 Pro 0813 is the pinned GA release of DeepSeek V4 Pro from August 2026, for workloads that need a fixed version. It keeps V4 Pro's 1.6T-parameter mixture-of-experts design and 1M-token context, with thinking and non-thinking modes, tool calls and JSON output, and DeepSeek reports much stronger agent performance than the April preview, especially in production. DeepSeek has said it will keep serving V4 Pro alongside V4.1 Flash.

Source: https://www.sandbase.ai/models/deepseek/deepseek-v4-pro-0813
API reference: https://www.sandbase.ai/models/deepseek/deepseek-v4-pro-0813/docs

## Facts

- Provider: DeepSeek
- Type: Language model
- Model ID: `deepseek/deepseek-v4-pro-0813`
- Price: $0.99 per 1M input tokens, $2.97 per 1M output tokens (25% off list price)
- Context window: 1M tokens, up to 384K output tokens
- Capabilities: chat, 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": "deepseek/deepseek-v4-pro-0813",
  "messages": [
    {
      "role": "user",
      "content": "Hello"
    }
  ],
  "max_tokens": 2048
}'
```

## FAQ

### How do I call DeepSeek V4 Pro 0813 through SandBase?

Create a SandBase API key, then send requests with the model ID "deepseek/deepseek-v4-pro-0813" 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 DeepSeek V4 Pro 0813 cost?

$0.99 per 1M input tokens and $2.97 per 1M output tokens with the current 25% discount (list price $1.32 / $3.96), billed per request from your SandBase balance.

### What is the context window of DeepSeek V4 Pro 0813?

1M tokens of context, with up to 384K output tokens per response.

### How does DeepSeek V4 Pro 0813 score on benchmarks?

DeepSeek V4 Pro 0813 scores 36.0 on the Artificial Analysis Intelligence Index (v4.3), ranking #31 of 83 models on SandBase; Coding Index 68.8, Agentic Index 41.3. Source: Artificial Analysis, measured as DeepSeek V4 Pro 0813 (Max).

### Which features does DeepSeek V4 Pro 0813 support?

DeepSeek V4 Pro 0813 supports reasoning, function calling, structured output. See Specifications above for the full list.

### Do I need a separate DeepSeek account?

No. One SandBase API key and balance gives you access to DeepSeek V4 Pro 0813 and the other models in the catalog; you do not need to sign up with DeepSeek separately.