Codex and Claude Code Changelogs

Claude Code 2.1.302 turns on fork subagents by default across desktop, VS Code, Agent SDK and headless mode, adds a disable flag and a classifier model setting.

Claude Code 2.1.302 ships 63 CLI changes, including the Read tool refusing images over 128 MB, no prompt suggestions for credit-billed models after a credit-billed reply, and an idle compaction toggle in /config.

The Claude Code desktop update adds nested sessions that run tasks in parallel, proactive follow-up suggestions, a /btw tab for side questions, sidebar session status and recap cards, shifting the focus from writing code to managing multiple AI sessions.

Claude Code 2.1.299 adds a --disallow-tools flag, stops refusing security-testing prompts, and auto-compacts chats over 200K tokens after about 54 minutes idle, among 190 CLI changes.

OpenAI Devs says Codex Pro users can try composer predictions, which suggest the next message based on the conversation and how you talk to it.

OpenAI Devs says Ultrafast rolls out today across the API, Codex and ChatGPT Work, at up to 8x the speed of Sol Standard with intelligence close to Astra.

OpenAI's Codex Cloud was quietly re-released, and the author says it is pretty good now.

Claude Code 2.1.293 switches the default model to Claude Haiku 5.5 with 1M context and fixes action order in context compaction and preservation of queued background messages.

Claude Code 2.1.289 ships 27 CLI changes, adding shared agents via agent.spawn and unified agent IDs, and fixing user plugins overwriting org-managed MCP sign-in descriptions and @-references bypassing read restrictions.

The release adds a tool that runs bash commands and returns output, a command to launch an agent for multi-step tasks, and restores Ctrl+C-cleared drafts when Up is pressed on an empty prompt.

Mods are small TypeScript programs that hook into each step of Claude Code's execution to intercept, rewrite or take over the flow, and can also change the interface; they install via /plugin and take effect immediately.

OpenAI staffer embirico says Codex Cloud is back online, one year after the original Codex launch.