# DeepSeek V4 Flash Vision Exp (Experimental) API

> DeepSeek V4 Flash Vision Exp is an experimental multimodal understanding model that accepts mixed text and image input and produces text output. It supports OpenAI-compatible image URL and base64 data URL content parts while retaining the text, reasoning, tool-calling, and JSON-output capabilities of DeepSeek V4 Flash.

Source: https://www.sandbase.ai/models/deepseek/deepseek-v4-flash-vision-exp
API reference: https://www.sandbase.ai/models/deepseek/deepseek-v4-flash-vision-exp/docs

## Facts

- Provider: DeepSeek
- Type: Language model
- Model ID: `deepseek/deepseek-v4-flash-vision-exp`
- Price: $0.22 per 1M input tokens, $0.90 per 1M output tokens (25% off list price)
- Context window: 1M tokens, up to 384K 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": "deepseek/deepseek-v4-flash-vision-exp",
  "messages": [
    {
      "role": "user",
      "content": "Hello"
    }
  ],
  "max_tokens": 2048
}'
```

## FAQ

### How do I call DeepSeek V4 Flash Vision Exp (Experimental) through SandBase?

Create a SandBase API key, then send requests with the model ID "deepseek/deepseek-v4-flash-vision-exp" 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 Flash Vision Exp (Experimental) cost?

$0.22 per 1M input tokens and $0.90 per 1M output tokens with the current 25% discount (list price $0.30 / $1.20), billed per request from your SandBase balance.

### What is the context window of DeepSeek V4 Flash Vision Exp (Experimental)?

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

### How does DeepSeek V4 Flash Vision Exp (Experimental) score on benchmarks?

DeepSeek V4 Flash Vision Exp (Experimental) scores 34.8 on the Artificial Analysis Intelligence Index (v4.3), ranking #32 of 83 models on SandBase; Coding Index 65.0, Agentic Index 47.5. Source: Artificial Analysis, measured as DeepSeek V4 Flash Vision (Max).

### Which features does DeepSeek V4 Flash Vision Exp (Experimental) support?

DeepSeek V4 Flash Vision Exp (Experimental) supports vision (image input), 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 Flash Vision Exp (Experimental) and the other models in the catalog; you do not need to sign up with DeepSeek separately.