01
Perplexity AI
Perplexity / Background agents
Unknown or unverifiedSelected plans
Perplexity documented asynchronous work, persistent context, and scheduled monitoring in the Computer surface.
Evidence: What is Computer?Public state history
The old answer
does not disappear.
Every material classification change preserves its prior state, new state, effective research date, and supporting evidence.
02
Unknown or unverifiedExperimental or beta
Google documented MCP servers in Gemini Code Assist agent mode while retaining a preview label.
Evidence: Gemini Code Assist agent mode overview03
OpenAI
Codex / Browser control
Unknown or unverifiedExperimental or beta
OpenAI added an in-app browser for local web development and described broader browser command as a future direction.
Evidence: Codex for (almost) everything04
Supported with conditionsSelected plans
OpenAI renamed connectors to apps and documented a unified directory with file search, deep research, sync, and action capabilities.
Evidence: Apps in ChatGPT