Cline is an open-source AI coding assistant for VS Code that features dual Plan/Act modes, terminal execution capabilities, and the Model Context Protocol (MCP) for custom tool creation. It serves as a fully collaborative AI partner for developers.

How is Cline different from GitHub Copilot?

Cline is open-source and offers unique features like Plan/Act modes for structured development, terminal command execution, browser automation for testing, and the Model Context Protocol (MCP) for creating custom development tools.

What programming languages does Cline support?

Cline supports all major programming languages and frameworks through its AI models and can execute terminal commands, edit files, and automate browser testing across different technology stacks.

New stealth model: Code-Supernova Gets a Million Token Context Window

Written by

Nick Baumann

Published on

September 26, 2025

New stealth model: Code-Supernova Gets a Million Token Context Window

Code-supernova, the free stealth model we launched last week, now supports a 1 million token context window. That's 5x the previous 200k limit.

Update: as of October 27, 2025, code-supernova is no longer in Cline as the stealth period has closed.

The expanded context means you can work with entire codebases, extensive documentation, or longer development sessions without context pruning. Everything else remains the same: multimodal support, free access during alpha.

0:00

/0:15

What changes

The model identifier updates to code-supernova-1-million in the model picker. Existing configurations continue working; the model automatically routes to the million token version.

The expanded context helps when: