One of the most notable innovations is support for compaction, a technique that enables the model to seamlessly manage multiple context windows and perform tasks involving millions of tokens within a single session. This enables large-scale refactors, extensive debugging rounds, and work cycles lasting several hours. GPT-5.1-Codex-Max is available immediately within the Codex environment in the CLI, IDE extension, and cloud; API access will follow later.
On Tuesday, Google finally launched Gemini 3, which the company claims is the "best model in the world for multimodal understanding and our most powerful agentic and vibe coding model yet." The claim is supported by benchmark data, crowd-sourced Arena results, and more advanced use cases that the chatbot has not previously been able to tackle. Also: Let Gemini make your next slide presentation for you - here's how
Anysphere has introduced Cursor 2.0, an update to the AI coding assistant that features the tool's first coding model, called Composer, and an interface for working with many agents in parallel. Both Cursor 2.0 and Composer were introduced October 29 by the Cursor team at Anysphere. Cursor is a fork of Microsoft's popular Visual Studio Code editor, downloadable at cursor.com for Windows, MacOS, and Linux.