AI Recommendation
Should you use Hy3 preview?
Hy3 preview is listed for chat workloads and supports a 256K context window.
Use it when OpenCode Zen's free tier is enough for evaluation, demos, or light production traffic.
Hy3 preview Free API on OpenCode Zen
Free API Verified Catalog metadata matched Reasoning models.dev metadata
Tencent Hy reasoning model for coding, instruction following, and agent tasks
Free APIOpenAI compatibleReasoningTool callingReasoning
API Details
Copy-ready connection details
Base URL
https://opencode.ai/zen/v1 Model ID
hy3-free API format OpenAI Chat Completions
Technical Details
Hy3 preview specifications
Context window 256K
Max output 64K
Status Online
Family Hy
Released Apr 20, 2026
Last updated Apr 20, 2026
Free listing since Jul 10, 2026
Input text
Output text
Capabilities reasoning, tool calling, temperature control
Open weights Yes
Weights Hugging Face
External benchmark references
| Benchmark | Score | Metric | Date |
|---|---|---|---|
| SWE-Bench Verified | 74.4 | resolved | Not listed |
Best for
- Chat
Strengths & Weaknesses
Strengths
- Long context window
- Reasoning mode listed
- Tool calling support
- Open weights available
Watch outs
- Vision support is not listed
Pricing
Hy3 preview pricing per 1M tokens
Input $0 per 1M tokens
Output $0 per 1M tokens
Free access Available OpenCode Zen
Availability
Hy3 preview availability by provider
We only found this Hy3 preview listing on OpenCode Zen in the current catalog. Use the related models section for nearby alternatives.
| Provider | Model listing | Access | Context | API | Limits |
|---|---|---|---|---|---|
| | Hy3 preview | Free tier | 256K | Native | Varies |
Compare
Hy3 preview alternatives to consider
| Model | Provider | Context | Access |
|---|---|---|---|
| big-pickle | OpenCode Zen | N/A | Free tier |
| DeepSeek V4 Flash | OpenCode Zen | 1.0M | Free tier |
| MiMo-V2.5 | OpenCode Zen | 1.0M | Free tier |
| Nemotron 3 Ultra 550B A55B | OpenCode Zen | 1.0M | Free tier |
| North Mini Code | OpenCode Zen | 256K | Check provider |
Typical Use Cases
Hy3 preview use cases
Chat
Hy3 preview is tagged for chat in this catalog and works with OpenAI-compatible client libraries.
FAQ
Hy3 preview free API FAQ
Is Hy3 preview free to use?
Hy3 preview is listed with free API access on OpenCode Zen, subject to the provider's quota and account policy.
What is the Hy3 preview model ID?
The model ID shown in this catalog is hy3-free.
What context window does Hy3 preview support?
The listed context window is 256K tokens with up to 64K output tokens.
More about Hy3 preview
Free Hy3 preview API.
For API keys, setup steps, and provider-level limits, see the OpenCode Zen provider page.