Unlike standard AI chats which are isolated, Cowork's "Projects" feature allows you to chain multiple tasks together. All tasks within a project share the same context and memory, allowing the AI to build on previous work and understand the larger goal.

The vision for Codex extends beyond a simple coding assistant. It's conceptualized as a "software engineering teammate" that participates in the entire lifecycle—from ideation and planning to validation and maintenance. This framing elevates the product from a utility to a collaborative partner.

The new Codex app encourages a 'monothread' pattern where a single AI conversation is kept alive for weeks. Improved context compaction allows the thread's value to increase over time, moving beyond the old model of starting fresh for each task and creating a persistent, learning assistant.

Go beyond single-chat prompting by using features like Claude's "Projects." This bakes in context like brand guidelines and SOPs, creating an AI "second brain" that acts as a strategic partner, eliminating the need to start from scratch with each new task.

As power users interact with multiple AI models, they face a new challenge: context fragmentation. Important conversations and strategic plans become scattered and forgotten across platforms like ChatGPT and Gemini, highlighting a growing need for a unified system to manage and track disparate AI interactions.

Most users re-explain their role and situation in every new AI conversation. A more advanced approach is to build a dedicated professional context document and a system for capturing prompts and notes. This turns AI from a stateless tool into a stateful partner that understands your specific needs.

When a conversation with Codex approaches its context window limit, using `/new` erases all history. The `/compact` command is a better alternative. It instructs the LLM to summarize the current conversation into a shorter form, freeing up tokens while retaining essential context for continued work.

Long-running AI agent conversations degrade in quality as the context window fills. The best engineers combat this with "intentional compaction": they direct the agent to summarize its progress into a clean markdown file, then start a fresh session using that summary as the new, clean input. This is like rebooting the agent's short-term memory.

Codex's new 'Heartbeats' feature allows AI agents to function as a Chief of Staff. These recurring automations maintain context within a single thread, scan sources like email and Slack, and proactively brief users on priorities, moving beyond reactive Q&A to active workflow management.