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Hetzner

DeepSeek V4 Flash 0731 API

Hetzner
About

Build advanced reasoning agents with DeepSeek V4 Flash 0731, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers available completely free of charge, native tool calling support, open weights architecture. Access DeepSeek V4 Flash 0731 via the Hetzner API with up to 384K output tokens.

Capabilities

Input Modalities

text

Output Modalities

text
Reasoning
Yes
Structured Output
Yes
Tool Use
Yes
WeightsOpen
Temperature
Adjustable
Attachment
Not Supported
Limits
Context Window
512K

Tokens

Input Limit
512K

Tokens

Max Output
384K

Tokens

Pricing

Standard (per 1M tokens)

Input
Free
Output
Free

Caching (per 1M tokens)

Read
Free
Frequently Asked Questions

DeepSeek V4 Flash 0731 by Hetzner costs Free per 1M input tokens and Free per 1M output tokens. Cached reads cost Free per 1M tokens.

Model Details
ID
DeepSeek-V4-Flash-0731
Provider
Hetzner
Family
deepseek-flash
Release Date
Jul 31, 2026
Knowledge Cutoff
May 1, 2025
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
HETZNER_API_KEY
API Base URL
https://inference.hetzner.com/api/v1
Documentation