Codex 0.168.0 adds side-conversation panes, model provider browsing, audio attachments and animated GIFs

OpenAI's release notes for Codex 0.168.0 list these new features:

• Model providers: browse them under Sessions → Model providers and choose the default for new chats. Open and resumed chats keep their saved provider when the default changes.
• Side conversation: set features.tui_workspace to view a side conversation beside the main chat, with a draggable divider and a leader-z zoom.
• Audio: attach recordings when using an audio-capable model. Codex skips recordings the model has rejected on later turns.
• Animated GIFs: set features.image_generation_animation to generate or edit GIFs, with optional frame count and timing controls.
• Terminal: fullscreen Codex shows image previews and pets in tmux on Ghostty and Kitty with allow-passthrough all; tui.notification_method = "osc777" enables terminal notifications, and approval notifications show longer command previews.

Codex now warns when features.multi_agent is set explicitly and points to agents.enabled for turning subagent tools off. The release also fixes TUI history and resume pickers, steering messages, fuzzy file search ranking and idle local MCP servers on Windows.