OpenCode
| OpenCode | |
|---|---|
 | |
| Developer | Anomaly Innovations |
| Stable release | |
| Written in | TypeScript |
| Operating system | Linux, macOS, Windows |
| Type | AI-assisted software development |
| License | MIT License |
| Website | opencode |
| Repository | |
OpenCode is a free and open-source artificial intelligence coding agent developed by Anomaly Innovations. It uses a large language model to interpret natural-language instructions, run commands and make changes across a project's source code.[2] OpenCode can be used through a terminal, desktop application, or integrated development environment (IDE), and supports models from more than 75 providers, including Anthropic, Google, and OpenAI, as well as locally hosted models.[3][4]
History
[edit]OpenCode is developed by Anomaly Innovations, the team behind the serverless development framework SST.[5][6] The active version of OpenCode is primarily written in TypeScript, uses Bun, and is released under the MIT License.[7][8] It is distinct from an earlier Go-based project of the same name that was archived in September 2025.[9] In February 2026, Anthropic revised its terms to make clear that consumer Claude subscriptions could not be used through unauthorized third-party harnesses. The same week, OpenCode removed support for Claude Pro and Max account keys, citing legal requests from Anthropic.[10]
In October 2026, Anomaly released OpenCode 2.0, which moved the terminal, desktop and web clients onto one shared background service.[6]
Features
[edit]OpenCode is not tied to one model provider: users connect their own providers and API keys, and it can also use locally hosted language models through llama.cpp, LM Studio, and Ollama.[2][3] The agent can edit files and run shell commands,[11] and it integrates with Language Server Protocol servers so that the model receives their feedback about the codebase.[4] It also supports the Model Context Protocol for connecting external tools and services.[4] OpenCode includes separate planning and building modes, with the planning mode restricting file modifications by default.[11] In addition to its command-line interface, it has a desktop application and an extension for VS Code and forks such as Cursor, VSCodium, and Windsurf.[12][4] OpenCode can connect to model aggregation services such as OpenRouter, allowing users to access models from multiple artificial intelligence providers through a single API.[13]
Use
[edit]In February 2026, Cloudflare released Vinext, an experimental reimplementation of most of the Next.js application programming interface on Vite. Cloudflare engineering director Steve Faulkner said he had spent a couple of hours with Anthropic's Claude in OpenCode defining the architecture, then had the model implement the API piece by piece, using the existing Next.js test suite to find problems.[14]
See also
[edit]References
[edit]- ↑ "Release 2.0.29". 13 October 2026. Retrieved 15 October 2026.
- 1 2 Sawers, Paul (March 7, 2026). "Open-source coding agents like OpenCode, Cline, and Aider are solving a huge headache for developers". The New Stack. Retrieved October 29, 2026.
- 1 2 "Providers". OpenCode. Anomaly. Retrieved August 16, 2026.
- 1 2 3 4 De Simone, Sergio (February 5, 2026). "OpenCode: an Open-source AI Coding Agent Competing with Claude Code and Copilot". InfoQ. Retrieved August 15, 2026.
- ↑ "About". SST. Anomaly Innovations. Retrieved August 16, 2026.
- 1 2 Sawers, Paul (October 12, 2026). ""A major overhaul": OpenCode 2.0 puts its terminal, desktop, and web apps on one shared service". The New Stack. Retrieved October 29, 2026.
- ↑ "anomalyco/opencode". GitHub. Retrieved October 29, 2026.
- ↑ "package.json". GitHub. anomalyco/opencode. Retrieved October 29, 2026.
- ↑ "opencode-ai/opencode". GitHub. Retrieved August 16, 2026.
- ↑ Claburn, Thomas (February 20, 2026). "Anthropic: No, absolutely not, you may not use third-party harnesses with Claude subs". The Register. Retrieved August 15, 2026.
- 1 2 "Agents". OpenCode. Anomaly. Retrieved October 29, 2026.
- ↑ "IDE". OpenCode. Anomaly. Retrieved August 16, 2026.
- ↑ "OpenCode Integration". OpenRouter. Retrieved August 16, 2026.
- ↑ Anderson, Tim (February 25, 2026). "Cloudflare experiment ports most of Next.js API 'in one week' with AI". The Register. Retrieved August 16, 2026.
