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OpenCode Zen

Hy3 preview Free API

OpenCode Zen
About

Build advanced reasoning agents with Hy3 preview 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 Hy3 preview Free via the OpenCode Zen API with up to 64K output tokens.

Capabilities

Input Modalities

text

Output Modalities

text
Reasoning
Yes
Structured Output
No
Tool Use
Yes
WeightsOpen
Temperature
Adjustable
Attachment
Not Supported
Limits
Context Window
256K

Tokens

Input Limit
256K

Tokens

Max Output
64K

Tokens

Pricing

Standard (per 1M tokens)

Input
Free
Output
Free

Caching (per 1M tokens)

Read
Free
Frequently Asked Questions

Hy3 preview 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
hy3-preview-free
Provider
OpenCode Zen
Family
hy3-free
Release Date
Apr 20, 2026
Knowledge Cutoff
Jun 1, 2025
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
OPENCODE_API_KEY
API Base URL
https://opencode.ai/zen/v1
Documentation