New Claude Code slash command announced alongside Opus 4.7. Spins up a dedicated review session that reads through all pending code changes and flags issues before committing — designed to reduce hallucinated edits and catch logical errors in the planning phase.
Key points
- Announced alongside Opus 4.7 release (April 2026) [010]
- Launches a dedicated review sub-session with elevated reasoning (uses Opus 4.7’s higher reasoning capacity) [010]
- Reads all changed files, staged diffs, and pending work before outputting a structured review report [010]
- Distinct from
/review— /ultrareview uses the Ultra plan’s multi-agent exploration capability to cover more surface area [010]
Related entities
- Claude Code — the tool that ships this command
- Claude Opus 4 7 — the model powering the review session
Related concepts
- Claude Code Loop — /ultrareview is a verification step within the standard code loop
- Effort Levels — /ultrareview uses elevated effort for thorough analysis
Source references
- [010] Nate Herk — Cloud agents & model releases cluster (2026-04-14 to 2026-04-17)