What changed in AI coding tools, with sources.

• 19 Oct 2026Claude Codeversion 2.1.304

  Claude Code v2.1.304

  Source wording: Added a transcript line when a plugin that runs first skips one of your mod's hooks, naming the event and the plugin

  Source: Claude Code releases

• 19 Oct 2026GitHub Copilot

  Copilot model policy API for enterprise, orgs, and teams

  Source wording: You can now use the REST API to retrieve and update Copilot model policies for enterprises, enterprise teams, agent apps, and organizations.

  Source: GitHub changelog

• 19 Oct 2026GitHub Copilot

  GitHub Copilot models deprecated on October 19, 2026

  Source wording: As of today, October 19, 2026, we have deprecated the following models across most GitHub Copilot experiences (including Copilot Chat, inline edits, ask and agent modes, and code completions).

  Source: GitHub changelog

• 20 Oct 2026Claude Codeversion 2.1.305

  Claude Code v2.1.305

  Source wording: Added sandbox.allowNestedUserNamespaces so sandboxed commands on Linux can create user namespaces (Chromium, rootless podman); this lets them get around the sandbox's file protections

  Source: Claude Code releases

• 21 Oct 2026Claude Codeversion 2.1.306

  Claude Code v2.1.306

  Source wording: Fixed claude -p inside cloud sessions reporting "Not logged in" when started without the session's environment variables

  Source: Claude Code releases

• 21 Oct 2026Claude Codeversion 2.1.307

  Claude Code v2.1.307

  Source wording: Added the claude_code.safety_event OpenTelemetry event for each tool call a permission rule, auto mode, a safety check, a hook or the sandbox stopped, prompted or sent back

  Source: Claude Code releases

• 22 Oct 2026Claude Codeversion 2.1.308

  Claude Code v2.1.308

  Source wording: Bug fixes and reliability improvements

  Source: Claude Code releases

• 22 Oct 2026Claude Codeversion 2.1.309

  Claude Code v2.1.309

  Source wording: Fixed sandboxed Bash commands on macOS and Linux running the shell's startup files outside the sandbox before each command

  Source: Claude Code releases

• 22 Oct 2026Codex

  ChatGPT for iOS 1.2026.286

  Source wording: View and stop background commands from a new pill above the composer on supported remote hosts.

  Source: Codex changelog

• 22 Oct 2026GitHub Copilot

  Custom skills, agents, and MCP servers in usage metrics API

  Custom skills, agents, and MCP servers in usage metrics API

  Source: GitHub changelog

• 22 Oct 2026GitHub Copilot

  GitHub Copilot in Visual Studio — September update

  GitHub Copilot in Visual Studio — September update

  Source: GitHub changelog

• 22 Oct 2026GitHub Copilot

  Global default for Copilot features generally available

  Source wording: Starting today, we’re gradually rolling out enforcement of the policy through October 26, so it may take effect at different times for different enterprises and organizations.

  Source: GitHub changelog

• 22 Oct 2026GitHub Copilot

  Industry comparisons in the Copilot impact dashboard

  Source wording: The Copilot impact dashboard now includes an “Industry comparison” section.

  Source: GitHub changelog

• 23 Oct 2026Claude Codeversion 2.1.310

  Claude Code v2.1.310

  Source wording: Added the Monitor tool and plugin monitors on Bedrock, Vertex, and Foundry, and when telemetry or nonessential traffic is disabled; long foreground sleeps are now blocked there too

  Source: Claude Code releases

• 23 Oct 2026Codexversion 0.164.0

  Codex 0.164.0

  Source wording: Save reusable prompts and slash commands in ten numbered /presets slots, with a keyboard menu for quick access.

  Source: Codex release notes

• 23 Oct 2026GitHub Copilot

  Turn notifications into code with GitHub Copilot in Teams

  Source wording: The new GitHub app in Teams brings notifications and Copilot together, helping teams turn issues into fixes and ship code faster without leaving the conversation.

  Source: GitHub changelog

• 23 Oct 2026GitHub Copilot

  Usage metrics API adds usage from tools like OpenCode

  Usage metrics API adds usage from tools like OpenCode

  Source: GitHub changelog

All issues

Which agent reads which file

• Reads 12
• Reads, with conditions 1
• Only if configured 3
• Migration only 4
• Not read 1
• Unverified 15

Last reviewed 16 Oct 2026.

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