AI Coding Changelogs

What changed this week in AI coding tools

Official release notes for AI coding tools, in one place. Release notes from Cursor, Claude Code, OpenAI Codex CLI, GitHub Copilot, Gemini CLI, Aider, pulled from each vendor's official feed and linked back to the source.

Updated 2026-10-19 14:53 UTC · last 7 days: GitHub Copilot 7 · Claude Code 5 · Cursor 2 · OpenAI Codex CLI 1 · Gemini CLI 1

This week (16 updates)

Sun, Oct 18, 2026

Fri, Oct 16, 2026

v2.1.302

Added CLAUDE_CODE_AUTO_MODE_MODEL to choose the model the client-side auto mode classifier uses; it does not change the model for server-side auto mode • Added an Idle compaction row to /config for turning idle compaction off or back on; the notices shown after an idle…

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Thu, Oct 15, 2026

0.163.0

New Features: Open /config to search preferences across categories, change supported settings immediately, and see which changes require a restart. (#52990, #53429) • Send a follow-up while Codex is responding to steer it immediately. Interrupting a turn also stops active Code…

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v2.1.301

Added CLAUDE_CODE_RETRY_WATCHDOG_MAX_USAGE_LIMIT_WAIT_MS so unattended retry mode (CLAUDE_CODE_RETRY_WATCHDOG) ends a request at a usage limit that resets too far away instead of waiting • Added OpenTelemetry tracing guidance to the claude-api skill, including setting up trace…

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Wed, Oct 14, 2026

v2.1.300

Added virtualText to a mod's prompt decorations: text drawn in the prompt box that never enters the draft or the submitted prompt • Added cache_creation_5m_tokens and cache_creation_1h_tokens to the OpenTelemetry api_request event, splitting cache writes by lifetime • Added…

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v2.1.299

Added CLAUDE_CODE_DISABLE_FILE_MENTIONS environment variable: Claude gets the paths of @ file mentions to read with its file tools, not the files' contents • Added idle compaction in the terminal: a 200K+ token conversation left idle for about 54 minutes is compacted before its…

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Tue, Oct 13, 2026

Release v0.64.0

refactor(a2a-server): implement V1 to V2 settings migration logic • fix(acp): bridge PromptResponse.usage and emit usage_update notifications (#29389) • Changelog for v0.63.0-preview.0 • fix(cli): propagate resolved folder trust state in headless mode (#29031) • chore(release)…

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Mon, Oct 12, 2026

Earlier this month

Sat, Oct 10, 2026

Fri, Oct 9, 2026

0.162.1

Bug Fixes: Fixed a TUI crash when asynchronous questions contain multiple lines, preserving line breaks and complete hyperlink destinations. (#51866) • Fixed startup failures caused by differences between a running background server's feature settings and CLI defaults.…

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v2.1.296

Added a code key to the Claude apps gateway's managed.policies[]: the same settings as cli, also applied in Claude Desktop's Code tab; beside desktop, it turns on Claude Desktop's gateway mode • Added autoCompactWindow to subagent frontmatter and --agents definitions, so a…

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Thu, Oct 8, 2026

v2.1.295

Added onFailure: "block" for command and HTTP hooks: a hook that can't start, times out, or exits with an unexpected code blocks the action instead of letting it through • Added Program Status Protocol (OSC 7501) support: terminals that implement it can show whether Claude Code…

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0.162.0

New Features: Add tools for creating and listing managed Git worktrees from trusted local projects when the worktrees feature is enabled. (#50148) • Pin tasks in the agent Command Center with p and keep them in a shared Pinned group when supported by the server. (#51500)…

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v2.1.294

Fixed prompt and agent hooks written as instructions (such as "Block commands that...") allowing what they should block • Improved how prompt hooks on Stop and SubagentStop written as instructions (such as "Carry on if the build is broken") are judged, so Claude is less likely…

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Wed, Oct 7, 2026

v2.1.293

Added Claude Haiku 5.5 (claude-haiku-5-5), now the default Haiku model on the Anthropic API — 1M context, $0.10/$0.50 per Mtok ($0.50/$2.50 for prompts over 100K) • Added agentType to the subagentStatusLine payload, so scripts can tell custom subagent types apart • Added…

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0.161.0

New Features: GPT-6.1 Sol is now the default model in the bundled and Amazon Bedrock catalogs. (#49318, #49339) • Amazon Bedrock supports multi-agent V2 and Ultra reasoning on compatible models; Bedrock Mantle also accepts AWS GovCloud regions. (#49345, #49813) • Sign in to MCP…

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Tue, Oct 6, 2026

Release v0.63.0

fix(cli): display retry progress indicator during connection recovery (#28340) • Changelog for v0.61.0-preview.1 • Changelog for v0.61.0 • fix(cli): distinguish missing MCP enablement config from malformed JSON • fix(cli): restore paused stdin after capability detection…

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v2.1.292

Added --marketplace to claude plugin install: adds the marketplace if needed, under the same policy checks as claude plugin marketplace add, then installs the plugin from it • Added an effort parameter to the Agent tool, so Claude runs a sub-agent at the effort level you ask for…

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v2.1.291

Fixed a regression in 2.1.290 where cloud sessions could drop answers to permission prompts • Fixed a regression in 2.1.288 where the last messages of a session could be lost when quitting

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Mon, Oct 5, 2026

v2.1.290

Added serverToolUses to the result of a mod's turn.step hook: the tool calls the API ran itself (the advisor), each with its id, name, input, start and end • Added agentId to the tool.check event of plugin hooks, so a hook can tell a subagent's permission check from the main…

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0.160.1

Bug Fixes: Preserve SYSTEMROOT, TEMP, and TMP when launching remote stdio MCP servers with explicitly configured remote environment variables, allowing Unix hosts to retain the Windows executor's startup environment. • #51121: Backport Windows remote MCP environment preservation…

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Sat, Oct 3, 2026

v2.1.289

Fixed a deny or ask rule on a nested part of a compound shell command not holding over a user-installed mod's approval on managed machines • Fixed the terminal freezing on short code blocks with many unclosed

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Fri, Oct 2, 2026

v2.1.288

Added $.ui.selection() for mods: returns the text you last selected in fullscreen mode and, when the selection lies within one transcript row, that row • Added a built-in gh api to cloud sessions whose image has no GitHub CLI, and fixed the built-in sending control characters…

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Thu, Oct 1, 2026

0.160.0

New Features: Browse older tasks in the agent command center with a keyboard-accessible “Show more” action. (#49106) • Select transcript text and paste with middle-click in fullscreen mode on supported local Linux X11 terminals. (#49112) • Start sessions outside a project with…

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v2.1.287

Added Claude Mods: plugins may now modify deeper behavior • Added You should know, a built-in mod where a side agent watches your back and flags things you or Claude might miss. Turn it on with /plugin enable cc-plugin-you-should-know@builtin (for first-party sessions with…

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Wed, Sep 30, 2026

0.159.3

New Features: Eligible local sessions signed in with ChatGPT can now show optional reminders to complete account security setup. (#49744) Full Changelog: #49744 [0.159] Backport account security setup reminders for 0.159.3 @andrewgu-oai

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v2.1.286

Added a count such as "2 of 5" to the permission prompt when several permission requests stack up • Added mouse support for the "N more" rows of lists in fullscreen mode: click one to jump to that end of the list, with hover and pressed states • Fixed several Claude Code…

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Tue, Sep 29, 2026

0.159.2

Bug Fixes: Suppressed console windows flashing on Windows when Codex launches background processes and sandboxed commands. (#49385) Full Changelog: #49385 [0.159] Backport Windows console suppression for 0.159.2 @andrewgu-oai

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Release v0.62.0

fix(a2a-server): add early return on unsupported store in tasks metadata endpoint • Changelog for v0.61.0-preview.0 • Changelog for v0.60.0 • fix(core,acp): format MCP tool call titles as structured signatures and segregate explanations • chore(release): bump version to…

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0.159.1

New Features: Added GPT-6.1 Sol as the default model in the bundled catalog and Amazon Bedrock Mantle and Runtime catalogs. (#49323, #49342) Full Changelog: #49323 [0.159] Prepare 0.159.1 release backports @andrewgu-oai • #49342 [0.159] Backport GPT-6.1 Sol Bedrock catalogs…

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v2.1.285

Added CLAUDE_CODE_DISABLE_WEB_FETCH environment variable to turn off the WebFetch tool • Added claude --desktop to open the Claude desktop app on the current directory, or on a session with --continue / --resume • Added claude plugin configure to show a plugin's options and…

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0.159.0

New Features: Opt-in instant_interrupt lets new input steer Codex during model responses or long-running code-mode calls. (#48135, #48141) • New sessions get a compact welcome screen and consistent headers, with occasional tips during and after turns. (#48513, #48562, #48352)…

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Mon, Sep 28, 2026

v2.1.284

Added Claude Sonnet 5.5 (claude-sonnet-5-5), now the default Sonnet model on the Anthropic API — 1M context, $2/$10 per Mtok with $0.20/Mtok cache reads • Added a "Yes, but ask again next time" answer to auto mode's prompt before a read outside the working directories, so you…

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0.158.0

New Features: Configure copy-on-select and right-click paste in the fullscreen TUI. Copied transcript selections now preserve Markdown formatting. (#47639, #47896, #48118) • Connect to MCP servers that require pre-registered OAuth client secrets, including through codex mcp add…

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Sat, Sep 26, 2026