OpenCode significantly outpaces Tabby in community adoption with 192,807 stars compared to 33,814 stars on GitHub. This 5.7x difference suggests OpenCode has a much larger and more active community. In terms of developer contributions, OpenCode has 24,629 forks, indicating strong developer engagement.

OpenCode shows more recent development activity with its last commit 7 hours ago, while Tabby was last updated 1 month ago. This suggests OpenCode is being more actively maintained.

Both tools share common technology foundations, being built with JavaScript, CSS, Typescript, JSX, Rust. However, they differ in their additional technology choices: OpenCode uses Tauri while Tabby leverages Bash, Python, Next.js, Java, C++, Kotlin, Lua.

Tabby has been in development longer, starting 3 years ago, compared to OpenCode which began 1 year ago. This 2.2-year head start suggests Tabby may have more mature features and established processes.

OpenCode is licensed under MIT, while Tabby's license terms are not publicly specified.

Both tools serve similar use cases in AI Coding Assistants. However, they also have distinct specializations: OpenCode also focuses on AI Coding Agents.

Tabby provides self-hosting options for complete data control and customization, while OpenCode may be primarily cloud-based or require different deployment approaches.