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OpenAI Codex vs ChatGPT

Side-by-Side

Feature
OOpenAI Codex
CChatGPT
TaglineAssign coding tasks, get tested PRs back automatically.A versatile AI assistant that drafts content and writes code for creators and developers
Rating8.8/109.2/10
Pricing Modelfreemiumfreemium
Starting PriceFree$8/mo
Free VersionYesYes
Free TrialNoNo
API AvailableYesYes
API Pricingpaygpayg
CLI SupportYesNo
MCP SupportYesYes
Open SourceYesNo
Platformsweb, macOS, Windows, VS Code, Cursor, Windsurf, JetBrains, CLIWeb, iOS, Android, macOS, Windows
Categorycodinggeneralist-ai
VisitVisit OpenAI CodexVisit ChatGPT

This is an automated comparison — we haven't written an editorial verdict yet. For deeper analysis, see each tool's individual review: OpenAI Codex and ChatGPT.

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OpenAI Codex vs ChatGPT — AI Tool Comparison | My AI Guide