Using DeepSeek V4 Flash 0731 on OpenRouter

Implementation guide · DeepSeek V4 · DeepSeek

Serverless
Open Source

OpenRouter exposes DeepSeek V4 Flash 0731 through model ID deepseek/deepseek-v4-flash-0731. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-10-19. Next refresh: weekly.

Quick Start

  1. 1
    Create an account at OpenRouter and generate an API key.
  2. 2
    Use the OpenRouter SDK or REST API to call deepseek/deepseek-v4-flash-0731 — see the documentation for request format.
  3. 3
    You'll be billed $0.13/1M input, $0.39/1M output tokens. See full pricing.
API PortalDocumentationPricingModel Card

Code Examples

See OpenRouter documentation for integration details.

Pricing on OpenRouter

TypePrice (per 1M)
Input tokens$0.13
Output tokens$0.39

Capabilities

Reasoning

About DeepSeek V4 Flash 0731

DeepSeek V4 Flash 0731 is the official (post-preview) DeepSeek V4 Flash release, launched on the DeepSeek API in public beta on 2026-07-31 with upgraded agent capabilities. DeepSeek says it keeps the same architecture and size as the April preview. MIT-licensed open weights are on Hugging Face as DeepSeek-V4-Flash-0731.

Full model details →

Model Specs

Released2026-07-31
ArchitectureMixture of Experts

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Also available on(3)

Vercel AI Gateway$0.08/1MTogether AI$0.14/1MFireworks AI
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Provider

OpenRouter

OpenRouter, Inc.

New York, NY, USA