OpenAI Codex vs Claude Code: plans and limits

OpenAI Codex

Local messages per 5-hour period (published as ranges per model for Plus/Business) plus weekly limits; Pro plans currently have no 5-hour limit. Extra usage via ChatGPT credits.

Tool	Plan	Price	Stated usage limits	Window	Included models	Source
OpenAI Codex	Free	$0	not disclosed	not disclosed	GPT-6 Luna (Standard speed, desktop app, subject to rollout)	learn.chatgpt.com checked 2026-10-19
OpenAI Codex	Go	$8/mo	not disclosed	not disclosed	GPT-6 Luna (Standard speed, desktop app, subject to rollout)	learn.chatgpt.com checked 2026-10-19
OpenAI Codex	Plus	$20/mo	Estimated local messages per 5h: GPT-6.1 Sol 15-160; GPT-6 Sol 15-150; GPT-6 Astra 5-45; GPT-6 Luna 350-3,000. Weekly limits may also apply	5-hour + weekly	GPT-6.1 Sol, GPT-6 Luna (plus GPT-6 Sol/Astra per limits table)	learn.chatgpt.com checked 2026-10-19
OpenAI Codex	Pro	$100, $200 or $500/mo tiers	No 5-hour limit currently; weekly limit amounts not disclosed on pricing page. Ultrafast mode on Pro $500	Weekly (5-hour currently off)	GPT-6.1 Sol, GPT-6 Sol, GPT-6 Luna, GPT-6 Astra	learn.chatgpt.com checked 2026-10-19
OpenAI Codex	Business	$25/user/mo monthly (lower when billed annually, 2+ users)	Standard Business: same per-model 5h ranges as Plus	5-hour + weekly	GPT-6.1 Sol, GPT-6 Sol, GPT-6 Luna, GPT-6 Astra	learn.chatgpt.com checked 2026-10-19

Claude Code

Rolling 5-hour session window plus weekly limits on paid plans; one pool shared across Claude apps and Claude Code. No fixed message count published.

Tool	Plan	Price	Stated usage limits	Window	Included models	Source
Claude Code	Free	$0	No Claude Code access	5-hour session	Sonnet, Haiku	claude.com checked 2026-10-19
Claude Code	Pro	$20/mo monthly; $17/mo billed annually ($200 up front)	At least 5x Free usage per 5-hour session; weekly limits apply; exact count not disclosed	5-hour + weekly	Opus, Sonnet, Haiku; Fable via usage credits	claude.com checked 2026-10-19
Claude Code	Max 5x	$100/mo	5x Pro per-session usage; weekly limit across all models; exact count not disclosed. Fable capped at 50% of weekly limits. $100/mo API credits	5-hour + weekly	Fable, Opus, Sonnet, Haiku	support.claude.com checked 2026-10-19
Claude Code	Max 20x	$200/mo	20x Pro per-session usage; weekly limit across all models; exact count not disclosed. Fable capped at 50% of weekly limits. $200/mo API credits	5-hour + weekly	Fable, Opus, Sonnet, Haiku	support.claude.com checked 2026-10-19

Not sure which fits? Try the plan calculator.

Only vendor-stated facts are used; numbers a vendor doesn't publish are shown as not disclosed.