OpenCode

Open-source coding agent for terminal, desktop and IDE; v2.0 (Oct 2026) adds a shared background service, rebuilt API, SDK and background subagents.

Key facts

• Use case: AI coding IDEs & agents
• TestedTools score: Testing in progress
• Pricing: Free, open source (MIT); free models included or bring any provider or existing Copilot/ChatGPT subscription; optional OpenCode Go $10/mo, Go Plus $40/mo; Zen pay-as-you-go (from $20 top-up) verified (source, checked 2026-10-15)
• Affiliate: unknown

Visit OpenCode →

Alternatives

• Cursor
• Windsurf
• Claude Code
• OpenAI Codex
• GitHub Copilot
• Cline
• Aider
• Zed
• Pi

Building a tool like this? Fast-Track Review gets it tested sooner (paid, does not change its score).