Claude Opus 4.7 Arrives in Claude Code: xhigh Effort, Auto Mode for Max, and /ultrareview

Claude Opus 4.7 Comes to Claude Code

Claude Code version 2.1.111 marks a significant milestone: full integration of Claude Opus 4.7, Anthropic's strongest generally available model to date. Released on April 16, 2026, this update reshapes how developers interact with the tool — from effort control to autonomous approval flows — building on a model that posts 87.6% on SWE-bench Verified and 64.3% on SWE-bench Pro.

A New Effort Tier: xhigh

Anthropic introduced a new xhigh effort level that sits between high and max, giving developers finer-grained control over the reasoning-to-latency tradeoff on complex tasks. The /effort command now opens an interactive slider when called without arguments, allowing real-time tuning without leaving the session. The default effort for Opus 4.7 in Claude Code is xhigh, which Anthropic recommends for most coding and agentic work — it delivers the bulk of max-level reasoning at substantially lower latency and cost.

For teams managing token budgets across concurrent sessions, high remains the cost-effective choice, while max is reserved for genuinely hard problems where the additional reasoning cycles justify the overhead.

Auto Mode Opens to Max Subscribers

Auto mode — which routes permission prompts through a classifier that determines whether a proposed action is safe to approve silently — is now available for Max subscribers when using Opus 4.7. It no longer requires the --enable-auto-mode flag, reducing friction for users who want fully autonomous agentic workflows. Teams and Enterprise subscribers also gain access. Safe commands proceed without interruption; riskier operations still surface a prompt as expected.

/ultrareview: Cloud-Based Comprehensive Code Review

A new /ultrareview command launches a cloud-based multi-agent code review against a pull request or file set. Pro and Max subscribers receive three free trials. The command is designed for thorough review passes — more exhaustive than an in-session review — and runs in the background so developers can continue working while the review completes.

/less-permission-prompts: Reducing CLI Friction

The new /less-permission-prompts skill scans recent session transcripts and proposes an allowlist of commonly approved, read-only commands. Accepted rules are written to the project's settings so those commands auto-approve in future sessions — a meaningful quality-of-life improvement for developers who run the same diagnostic operations repeatedly.

Quality-of-Life Improvements

Several smaller but meaningful changes ship alongside the Opus 4.7 integration:

• Plan file naming: Plan files are now named after the user's prompt (e.g., fix-auth-race-snug-otter.md) rather than generic filenames, making multi-task sessions easier to navigate.
• Auto theme: A new "Auto (match terminal)" theme option dynamically adapts Claude Code's color scheme to the terminal's dark or light mode setting.
• Ctrl+U / Ctrl+Y: Ctrl+U now clears the entire input buffer instantly; Ctrl+Y restores it — handy for discarding a long prompt without losing it permanently.
• Typo recovery: Claude Code now suggests the closest matching subcommand when a claude <word> invocation has a near-miss typo, reducing friction for new users.
• Glob patterns in read-only commands: Read-only bash commands that use glob patterns no longer trigger permission prompts, eliminating a common source of interruption.

Bug Fixes

This release resolves a number of notable issues:

• Fixed terminal display tearing in iTerm2 + tmux setups
• Fixed @ file suggestions re-scanning the entire project on every turn
• Fixed /clear dropping the session name set by /rename
• Fixed tab-completing /resume immediately resuming an arbitrary titled session
• Fixed LSP diagnostics from before an edit appearing after it
• Fixed 429 rate-limit errors on Bedrock/Vertex/Foundry referencing the wrong status URL
• Fixed feedback surveys appearing back-to-back
• Fixed bare URLs in bash/PowerShell/MCP tool output being unclickable when wrapped