Released: 2026-09-25
If you're picking a model for your project, two new models, GPT-6 Sol and Luna, are now available to switch to.
Teams used to connecting models through Amazon Bedrock (AWS's cloud model hosting service) can now choose these two models directly. If your project still runs on an older model, you can also follow the included migration tips to move your work over to the new models smoothly.
When you open an interactive session (a live conversation with the AI), eligible environments now automatically start a server behind the scenes.
If the server configuration conflicts with your current environment, the screen offers repair options so your work isn't interrupted outright. In sessions running on a remote connection or a local background server, you can now also use the /import command at any time.
You're discussing a project with the AI, and if you want to open a new branch to explore a different approach, this is the moment to press the f shortcut to fork the conversation (spinning a new branch off the existing discussion).
When you fork a conversation that was opened in another application, your unsent drafts and queued prompts are all preserved intact. As you switch between discussion threads, an ongoing voice call is not forced to disconnect. If you still have an unsubmitted reply in the input box when a turn ends, the content is automatically restored to the input box, without interfering with any history search currently in progress.
When you need to read long responses in the terminal or copy a specific passage across lines, screen space and text selection both matter. Conversation history now displays fullscreen by default, and supports holding the Shift key while clicking to extend a text selection.
Rendering is also more refined, with full support for Unicode (universal text encoding) bullets, checkboxes, aligned equations, and optimization notation. When you use Terminal.app over SSH (a remote connection channel) in automatic screen mode, native scrollback works again. The terminal also respects the mouse settings of tmux (a terminal multiplexer).
In managed environments or ones that reach the network through a proxy server (a relay host that forwards your network requests), network transfers are now more reliable and secure.
Previously, live connections and standalone web searches could take the wrong proxy route when hitting a redirect; that problem is fixed. File uploads now retry automatically on transient network failures, and the upload timeout has been extended to five minutes. All redirects and in-flight HTTP (web transfer protocol) connections strictly enforce network restrictions. The same goes for WebSocket (a real-time two-way connection): once a security rule change revokes permission, the connection is actively terminated immediately.
Added GPT-6 Sol and Luna, including Amazon Bedrock support and migration prompts for older models. (#47332, #47347)Enabled automatic background-server startup for eligible interactive sessions, with recovery choices when server settings are incompatible. (#47179, #47318)
Made `/import` available in remote sessions and local background-server sessions. (#47317)Added an `f` shortcut to fork conversations open in another app, preserving drafts and queued prompts. (#47185)
Preserved active voice conversations when switching threads. (#47381)
Recovered unsent question answers into the composer when turns end, without disrupting active history searches. (#47422, #47423)Enabled fullscreen transcripts by default and added Shift-click to extend text selections. (#47178, #47414)
Improved terminal rendering with Unicode bullets, checkboxes, aligned equations, and optimization notation. (#47191, #47322)
Respected tmux mouse settings and restored native scrollback for Terminal.app over SSH in automatic screen mode. (#47399, #47417)Fixed configured proxy routing for realtime connections and standalone web search, including search redirects. (#47101, #47142, #47204)
Added retries for transient file-upload failures and increased the upload timeout to five minutes. (#47122, #47393)
Enforced network restrictions across redirects and ongoing HTTP and WebSocket traffic, including cancellation when policy changes revoke access. (#47389, #47407)