Codex Plugin for Claude Code vs Slashy: Features, Pricing & Which Is Better (2026)
A side-by-side comparison of Codex Plugin for Claude Code and Slashy — features, pricing, and ideal use cases — to help you decide which AI tool fits your workflow.
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Codex Plugin for Claude Code
OpenAI
Codex Plugin for Claude Code lets you invoke OpenAI Codex from inside Claude Code for reviews, adversarial checks, and delegated background tasks.
Key features
- Codex Code Review Slash Commands: /codex:review runs a normal Codex read-only review of uncommitted changes or a branch against a base ref like main.
- Adversarial Review: /codex:adversarial-review runs a steerable review that questions the design and pressure-tests assumptions, tradeoffs, and failure modes.
- Delegated Rescue Tasks: /codex:rescue hands off tasks to a codex-rescue subagent so Codex can investigate bugs, try fixes, or continue previous Codex threads.
- Session Hand-Off: /codex:transfer moves the current Claude Code session over to Codex for continued work, keeping context intact.
- Background Job Management: /codex:status, /codex:result, and /codex:cancel manage long-running Codex jobs kicked off in the background.
- Zero-Setup Onboarding: /codex:setup detects whether Codex is installed and logged in and can offer to install it via npm if missing.
Best for
- Second-Opinion Code Review: Ask Codex to review the same uncommitted changes Claude Code just produced before shipping.
- Adversarial Design Review: Pressure test a chosen implementation for auth, data-loss, rollback, race-condition, or reliability risks before merge.
- Delegating Bug Investigations: Hand off a bug investigation to Codex in the background while continuing other work in Claude Code.
- Multi-Agent Coding Workflow: Route different types of tasks (fixes, refactors, reviews) to whichever agent is best suited without leaving Claude Code.
- Branch Reviews Before Merge: Run /codex:review base main to get a Codex review of the entire feature branch as part of your PR process.
Slashy
Slashy
Slashy is an AI-native email client that drafts replies in your voice, triages what matters, and makes sure no follow-up slips through.
Key features
- AI Reply Drafting: Drafts email replies in your own voice so you can review and send in seconds.
- Smart Triage: Automatically surfaces the emails that matter and filters out inbox noise.
- Follow-up Tracking: Tracks pending conversations so no follow-up slips through the cracks.
- AI-Native Inbox: A redesigned email client built around AI rather than added onto an old one.
- Enterprise Controls: SSO, SCIM, and customized security controls for teams on the Enterprise plan.
Best for
- Clearing a Busy Inbox: Triage and respond to high volumes of email in a fraction of the usual time.
- Consistent Voice Replies: Draft on-brand responses that sound like you without writing from scratch.
- Never Missing Follow-ups: Stay on top of threads that need a reply or a nudge.
- Team Email at Scale: Roll out an AI email client across an organization with SSO and SCIM.