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OpenCode Zen

DeepSeek V4 Flash Free API

OpenCode Zen
About

Build advanced reasoning agents with DeepSeek V4 Flash Free, 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 Free via the OpenCode Zen API with up to 128K 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
200K

Tokens

Input Limit
200K

Tokens

Max Output
128K

Tokens

Pricing

Standard (per 1M tokens)

Input
Free
Output
Free

Caching (per 1M tokens)

Read
Free
Frequently Asked Questions

DeepSeek V4 Flash Free by OpenCode Zen 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-free
Provider
OpenCode Zen
Family
deepseek-flash-free
Release Date
Apr 24, 2026
Knowledge Cutoff
May 1, 2025
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
OPENCODE_API_KEY
API Base URL
https://opencode.ai/zen/v1
Documentation