OpenCode Zen API Key Guide: Access 7 Free AI Coding Models

What is OpenCode Zen & Why These Models Are Free

OpenCode Zen is a high-performance AI model gateway maintained by the OpenCode team. To gather real-world developer feedback for agentic coding workflows, OpenCode partners with NVIDIA, DeepSeek, Xiaomi and others to offer several Limited-Time Free models.

OpenCode Main Dashboard UI
OpenCode Official Website & Agent Interface
  • Nemotron 3 Ultra Free: NVIDIA's flagship 550B-parameter reasoning & code synthesis model.
  • DeepSeek V4 Flash Free: Ultra-low-latency code model for real-time inline completions.
  • Big Pickle: OpenCode's mysterious stealth agentic model for multi-file refactoring.
  • MiMo V2.5 Free: Xiaomi's powerful general-purpose LLM.

Step-by-Step API Key Setup

Step 1: Open https://opencode.ai/go?ref=SVE58K5K80 in your browser. You'll see a clean sign-in panel with two options: Continue with GitHub and Continue with Google.

OpenCode Zen Sign in Panel
OpenCode Zen Authentication Interface: GitHub & Google Single Sign-On

Step 2: Account Activation & Key Generation. OpenCode Zen requires an initial one-time deposit to activate your account before accessing the free models. The deposited balance remains in your account for other paid models. After depositing, navigate to the API Keys section to generate and copy your key.

Code Examples

OpenCode Zen endpoints are fully OpenAI-compatible. Just set the base URL to https://opencode.ai/zen/v1:

Community Feedback

Comments are tied to your GitHub account — sign in to join the discussion.