OpenCode

OpenCode is the open-source AI coding agent built by Anomaly and used by over 7.5 million developers monthly. With 170,000 GitHub stars, 900+ contributors, and 13,000+ commits, it is one of the most actively developed AI coding tools available. OpenCode runs in the terminal, as a desktop application (macOS, Windows, Linux, currently in beta), and as an IDE extension. Its defining architecture is model and account flexibility: developers can connect any of 75+ LLM providers via Models.dev including local models, use BYOK with API keys from Claude, OpenAI, Gemini, or any OpenAI-compatible endpoint, or log in with an existing GitHub Copilot or ChatGPT Plus/Pro account to reuse those subscription quotas without paying for separate API access. The core agent capabilities include LSP-enabled context (automatically loads the right language servers so the LLM understands the codebase's types and imports), multi-session parallel execution (multiple OpenCode agents running simultaneously on the same project), share links for session debugging and reference, plan mode for read-only analysis before making changes, and undo/redo for iterating on AI-generated edits. OpenCode fully supports the Model Context Protocol for connecting external tools: both local and remote MCP servers are supported, including OAuth authentication for remote servers such as Sentry and Context7. The official docs include configuration examples for GitHub MCP, Sentry MCP, Context7, and Grep by Vercel. OpenCode Zen is the company's curated model marketplace: a handpicked set of LLM models that Anomaly has tested and benchmarked specifically for coding agent tasks. Zen removes the evaluation burden of choosing between dozens of models by providing validated options that perform consistently on agentic coding workflows. Zen requires a separate billing relationship with opencode.ai but has no mandatory subscription: developers can connect any external provider or account instead. Privacy is a first-class commitment: OpenCode explicitly does not store code or context data, enabling use in privacy-sensitive environments and regulated industries where cloud-processing tools are restricted. The platform is MIT licensed and open-source on GitHub at github.com/anomalyco/opencode, with the full source available for audit, self-hosting, and extension. No SOC 2, HIPAA, or commercial compliance certifications exist, which is a hard constraint for enterprise procurement teams that require certified vendors. OpenCode is free by design but is not the right fit for developers who want a managed subscription with built-in usage quotas and no configuration. Cursor at $20/month and Claude Code Pro at $20/month provide self-contained experiences with billing, support, and model access handled by a single vendor. OpenCode requires the developer to manage their own API keys or subscription accounts, which adds initial setup friction and ongoing billing complexity when usage spans multiple model providers. Teams needing GitHub-native features including PR review, code review comments, and CI/CD integration should evaluate GitHub Copilot at $10/month rather than assembling those integrations manually via MCP. Current state Q2 2026: OpenCode reached 170,000 GitHub stars with active daily commits. The desktop app remains in beta on macOS, Windows, and Linux. OpenCode Zen continues as the curated model marketplace for developers who want validated model recommendations rather than open-ended provider selection. The platform supports 75+ LLM providers and both local and remote MCP servers with full OAuth support.