OpenAI Codex CLI vs Continue

OpenAI Codex CLI vs ContinueComparisonUpdated 2026-03-16

SUMMARY

OpenAI Codex CLI (CLI) uses markdown configuration while Continue (IDE) uses markdown. They differ on 2 of 11 compared features. Both tools provide AI-assisted development but take different approaches to project configuration.

FEATURE COMPARISON

Feature	OpenAI Codex CLI	Continue	Notes
Config format	markdown	markdown
Hierarchy support	✓	✓	Whether config files can be placed at multiple directory levels
Global config	✓	✓	User-wide configuration outside any project
Project config	✓	✓
Subdirectory scoping	✓	✓	Config files in subdirectories that apply only to that subtree
File inclusion / imports	✗	✗	Ability to include or reference other files from config
Ignore file	.codexignore	✗
IDE integration	CLI	✓
Schema / structure	Free-form (Markdown)	Free-form (Markdown)	Whether config uses structured schema or free-form content
Git committed	✓	✓	Whether primary config files are intended to be version-controlled
Encoding	UTF-8	UTF-8

FILE MAPPING

Purpose	OpenAI Codex CLI	Continue
Settings / configuration	~/.codex/config.toml	.continue/config.yaml

SIDE-BY-SIDE CODE SAMPLES

OpenAI Codex CLI

AGENTS.md

markdown

# AGENTS.md

## Project Overview

This is a Next.js 14 e-commerce application using the App Router,
Server Components, and Drizzle ORM with PostgreSQL.

## Code Conventions

- Use TypeScript strict mode throughout
- Prefer Server Components; use "use client" only when necessary
- Name files with kebab-case: `product-card.tsx`, not `ProductCard.tsx`
- Co-locate tests: `product-card.test.tsx` next to `product-card.tsx`

## Architecture

- `app/`           — Next.js App Router pages and layouts
- `components/`    — Shared UI components
- `lib/`           — Utilities, database client, auth helpers
- `actions/`       — Server Actions for mutations

## Testing

- Use Vitest for unit tests, Playwright for E2E
- Mock database calls using `lib/test-utils.ts` helpers
- Every new component needs at least one test

## Build Commands

```bash
pnpm dev          # Start dev server
pnpm build        # Production build
pnpm test         # Run Vitest
pnpm test:e2e     # Run Playwright
pnpm lint         # ESLint check
```

Continue

.continue/rules/*.md

markdown

# Code Style Rules

- Use TypeScript strict mode for all files
- Prefer named exports over default exports
- Use async/await over .then() chains
- Keep functions under 30 lines
- Use descriptive variable names (no single letters except loop counters)

KEY DIFFERENCES

1. Ignore file

OpenAI Codex CLI: .codexignore. Continue: Not supported.

2. IDE integration

OpenAI Codex CLI: CLI. Continue: Supported.

WHICH SHOULD I USE?

Recommendation

Choose based on your IDE/CLI preference. If you use OpenAI Codex CLI, configure AGENTS.md. If you use Continue, configure .continue/config.yaml. Many projects include config files for multiple tools so each team member can use their preferred editor.

PORTABILITY TIP

sync-instructions.sh

bash

# Maintain a single source of truth:
cp AI-INSTRUCTIONS.md CLAUDE.md
cp AI-INSTRUCTIONS.md .cursorrules
cp AI-INSTRUCTIONS.md AGENTS.md