> ## Documentation Index
> Fetch the complete documentation index at: https://docs.venice.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# DeepSeek V4.1 Flash API

> DeepSeek V4.1 Flash API on Venice: 1M context, $0.30 input and $1.20 output per 1M tokens. Private, with zero data retention. Pricing, specs and code examples.

> [accordion] Plain-text specification
>
> ## DeepSeek V4.1 Flash API
>
> DeepSeek V4.1 Flash is a large language model by DeepSeek, available on the Venice API as `deepseek-v4-1-flash`. It runs privately, with zero data retention.
>
> DeepSeek V4.1 Flash is a multimodal Mixture-of-Experts model with 552B backbone parameters (8B active on input, 16B on output) and a 1M-token context window. It natively processes images and text, with strong reasoning, coding, and agentic performance.
>
> ### DeepSeek V4.1 Flash API pricing
>
> | Model ID | Variant | Privacy | Price |
> | - | - | - | - |
> | `deepseek-v4-1-flash` | Standard | Private | $0.30 / $1.20 per 1M |
>
> ### DeepSeek V4.1 Flash specifications
>
> | Spec | Value |
> | - | - |
> | Provider | DeepSeek |
> | Released | Sep 10, 2026 |
> | Privacy | Private |
> | Status | Stable |
> | Open weights | Yes |
> | Context window | 1M tokens |
> | Max output | 256K tokens |
> | Reasoning effort | none, low, high, max |
> | Served precision | FP8 |
>
> ### How to use the DeepSeek V4.1 Flash API
>
> Send requests to `POST https://api.venice.ai/api/v1/chat/completions` with `"model": "deepseek-v4-1-flash"` and your API key.
>
> ```bash theme={"system"}
> curl https://api.venice.ai/api/v1/chat/completions \
>   -H "Authorization: Bearer $VENICE_API_KEY" \
>   -H "Content-Type: application/json" \
>   -d '{
>     "model": "deepseek-v4-1-flash",
>     "messages": [{ "role": "user", "content": "Explain TEE attestation in two sentences." }],
>     "reasoning_effort": "high"
>   }'
> ```
>
> ### Related models
>
> * [DeepSeek V4 Flash 0731 API](https://docs.venice.ai/models/deepseek-v4-flash-0731.md): $0.13 / $0.26 per 1M
> * [DeepSeek V4 Flash 0423 API](https://docs.venice.ai/models/deepseek-v4-flash-0423.md): $0.138 / $0.275 per 1M
> * [MiniMax M3 Preview API](https://docs.venice.ai/models/minimax-m3-preview.md): $0.30 / $1.20 per 1M
> * [Mercury 2.5 API](https://docs.venice.ai/models/mercury-2-5.md): $0.25 / $0.9375 per 1M
> * [GPT-5.6 Luna API](https://docs.venice.ai/models/gpt-5-6-luna.md): $0.20 / $1.20 per 1M
> * [GPT-5.6 Luna Pro API](https://docs.venice.ai/models/gpt-5-6-luna-pro.md): $0.20 / $1.20 per 1M


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