ChatGPT Plus (Codex) usage limits
$20/mo · Last change Same 14 Oct 2026 · Last updated
ChatGPT Plus (Codex) costs $20/mo. Windows: Five-hour + weekly (shared by Work and Codex). GPT-6 Astra: ~5–45 local messages / 5h (estimate). Most recent change (14 Oct 2026): GPT-5.5 retired from Codex for ChatGPT sign-ins.
| Windows | Five-hour + weekly (shared by Work and Codex) |
| GPT-6 Astra | ~5–45 local messages / 5h (estimate) |
| GPT-6.1 Sol | ~15–160 local messages / 5h (estimate) |
| GPT-6 Luna | ~350–3,000 local messages / 5h (estimate) |
OpenAI says ranges are estimates, not guaranteed counts; cloud tasks can use more.
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ChatGPT Plus (Codex) limits: FAQ
What are the ChatGPT Plus (Codex) usage limits?
As of 19 Oct 2026: Windows: Five-hour + weekly (shared by Work and Codex). GPT-6 Astra: ~5–45 local messages / 5h (estimate). GPT-6.1 Sol: ~15–160 local messages / 5h (estimate). GPT-6 Luna: ~350–3,000 local messages / 5h (estimate).
How much does ChatGPT Plus (Codex) cost?
$20/mo (per the vendor's pricing page, checked 19 Oct 2026).
When did ChatGPT Plus (Codex) limits last change?
On 14 Oct 2026: GPT-5.5 retired from Codex for ChatGPT sign-ins. LimitWatch classifies it as a neutral change. Now: GPT-5.5 removed; GPT-6.1 Sol recommended on paid plans.
How often have ChatGPT Plus (Codex) limits changed?
LimitWatch has logged 7 dated changes affecting ChatGPT Plus (Codex) since 2 Apr 2026: 2 increases, 2 cuts, and 3 other changes.
Anything else to know about ChatGPT Plus (Codex) limits?
OpenAI says ranges are estimates, not guaranteed counts; cloud tasks can use more.
Related plans: ChatGPT Pro 100 · ChatGPT Pro 200 · ChatGPT Pro 500 · All OpenAI changes
Change history (7)
GPT-5.5 retired from Codex for ChatGPT sign-ins
GPT-5.5 selectable in Codex with ChatGPT sign-in.GPT-5.5 removed; GPT-6.1 Sol recommended on paid plans.Details and source
From 19:00 UTC on Oct 14, GPT-5.5 is no longer available in Codex when signed in with ChatGPT. Paid plans should switch to GPT-6.1 Sol; API-key Codex sessions are unaffected. Update saved settings, configs and scripts that select gpt-5.5.
Vendor’s framing: “The OpenAI API and Codex sessions authenticated with an API key aren’t affected.”
Source: ChatGPT & Codex changelog · Announced: 2026-09-14 (notice) and 2026-10-14, ChatGPT & Codex changelog · Plans: ChatGPT Plus (Codex), ChatGPT Pro 100, ChatGPT Pro 200ChatGPT Plus: five-hour Codex limit is back
No five-hour limit on Plus.Rolling five-hour limit on Plus.Details and source
The rolling five-hour limit returned for Plus across ChatGPT Work and Codex; Pro $100 and $200 exempt.
Vendor’s framing: “Tomorrow we will bring back the 5h limit for Plus accounts across ChatGPT Work and Codex. I had mentioned this a while ago, but then postponed it”
Source: Digital Applied ledger (row 19; original report: explainx) · Announced: 2026-08-25, Tibo Sottiaux on X · Plans: ChatGPT Plus (Codex)Codex five-hour limit ‘restored’ (didn’t hold for Plus)
No five-hour limit.Five-hour limit restored as announced; whether it landed for Plus is not established.Details and source
OpenAI said the five-hour limit would return on Jul 30 with a full usage reset; on Aug 25 the same exec said he had postponed it.
Vendor’s framing: “Tomorrow, we’ll also restore the five-hour limit that we temporarily paused while investigating”
Source: Digital Applied ledger (row 18; original report: Codex Runway) · Announced: 2026-07-29, Tibo Sottiaux on X · Plans: ChatGPT Plus (Codex), ChatGPT Pro 100, ChatGPT Pro 200Codex five-hour limit temporarily removed (launch week)
Five-hour limit enforced alongside weekly limit.No five-hour limit (temporary).Details and source
During GPT-5.6 Sol launch week the rolling five-hour limit was removed for Plus, Business and Pro; weekly limits unchanged.
Vendor’s framing: A temporary removal during launch week
Source: Digital Applied ledger (row 17; original report: Morph) · Announced: 2026-07-12, Tibo Sottiaux on X · Plans: ChatGPT Plus (Codex), ChatGPT Pro 100, ChatGPT Pro 200Codex adds banked rate-limit resets
No user-controlled way to clear a rate limit.One banked reset per user at launch.Details and source
Rate-limit reset banking added: one free reset per user at launch, redeemable against a hit limit.
Vendor’s framing: A new capability
Source: Digital Applied ledger (row 16; original report: Ofox) · Announced: 2026-06-11, Codex changelog · Plans: ChatGPT Plus (Codex), ChatGPT Pro 100, ChatGPT Pro 200ChatGPT Plus Codex allocation rebalanced toward steady daily use
Plus allowed longer burst sessions.Plus rebalanced toward steadier daily usage.Details and source
Announced with the new $100 Pro tier: Plus shifted toward steadier day-to-day usage rather than longer burst sessions.
Vendor’s framing: Presented as part of a tier launch, not as a reduction
Source: The Next Web · Announced: 2026-04-09 · Plans: ChatGPT Plus (Codex)Codex credits move from per-message to per-token pricing
Credits charged per message or per PR as approximate averages.Credits charged per 1M input, cached input and output tokens.Details and source
Codex credits for Plus, Pro, Business and new Enterprise switched to a token-based rate card (input, cached input, output). No conversion published.
Vendor’s framing: “we updated Codex pricing to align with API token usage, instead of per-message pricing”
Source: Digital Applied ledger (row 12; original: OpenAI Help Center Codex rate card) · Announced: On or before 2026-04-02, OpenAI Help Center · Plans: ChatGPT Plus (Codex), ChatGPT Pro 100, ChatGPT Pro 200