ChatGPT Plus vs Google AI Pro
Published limits, price and every dated limit change for both plans, side by side. Each value comes from the vendor’s page or a cited source; where a vendor publishes no number, we say so.
ChatGPT Plus costs $20/mo; Google AI Pro costs $19.99/mo. LimitWatch has logged 7 changes to ChatGPT Plus (2 cuts, 2 increases) and 2 to Google AI Pro (1 cut, 1 increase).
| ChatGPT Plus (Codex) | Google AI Pro (Antigravity) | |
|---|---|---|
| Price | $20/mo | $19.99/mo |
| Published limits | Windows Five-hour + weekly (shared by Work and Codex) | Window Quota refreshed every five hours until weekly limit |
| GPT-6 Astra ~5–45 local messages / 5h (estimate) | Weekly Higher weekly rate limit than free | |
| GPT-6.1 Sol ~15–160 local messages / 5h (estimate) | Absolute figure None published | |
| GPT-6 Luna ~350–3,000 local messages / 5h (estimate) | ||
| Limit changes logged | 7 changes since 2 Apr 2026 ▲ 2 ▼ 2 ● 3 | 2 changes since 19 May 2026 ▲ 1 ▼ 1 ● 0 |
| Cuts in last 180 days | 1 | 1 |
| Last change | Same 14 Oct 2026 GPT-5.5 retired from Codex for ChatGPT sign-ins | Less 18 Jun 2026 Gemini CLI daily quota replaced by Antigravity weekly cap |
| Notes | OpenAI says ranges are estimates, not guaranteed counts; cloud tasks can use more. | Rate limits correlate with work done by the agent. |
| Source | help.openai.com checked 19 Oct 2026 | antigravity.google checked 19 Oct 2026 |
| Full ChatGPT Plus page → | Full Google AI Pro page → |
Units differ between vendors (sessions, credits, requests, multipliers), so limits are shown as each vendor publishes them rather than converted.
Change history, both plans (9)
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 200Gemini CLI daily quota replaced by Antigravity weekly cap
Gemini CLI: 1,000 requests per day.Weekly compute-based cap; no absolute figure published.Details and source
Gemini CLI and Code Assist IDE extensions stop serving free/Pro/Ultra tiers; the Antigravity CLI meters a weekly compute cap with five-hour refreshes for Pro and Ultra.
Vendor’s framing: Migration to a successor product; quota change not headlined
Source: Digital Applied ledger (row 29) · Announced: 2026-05-19, Google I/O · Plans: Google AI Pro (Antigravity), Google AI Ultra 5x / 20x (Antigravity)Codex 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 200Antigravity: new $100 Ultra (5x Pro), top Ultra cut to $200 (20x Pro)
Pro $20 (entry quota) and Ultra $250 (highest quota).Ultra $100 = 5x Pro; Ultra $200 = 20x Pro; base Gemini entitlements adjusted upward.Details and source
Google standardised Antigravity multipliers: $100 Ultra = 5x Pro tokens, $200 Ultra = 20x Pro; AI credits removed from base plans and used only for overage.
Vendor’s framing: “we have adjusted the base plan entitlements upward for Gemini models on Antigravity”
Source: Google Antigravity Blog · Announced: 2026-05-19, Antigravity blog · Plans: Google AI Pro (Antigravity), Google AI Ultra 5x / 20x (Antigravity)ChatGPT 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
ChatGPT Plus vs Google AI Pro: FAQ
How much do ChatGPT Plus and Google AI Pro cost?
ChatGPT Plus: $20/mo (OpenAI pricing page, checked 19 Oct 2026). Google AI Pro: $19.99/mo (Google pricing page, checked 19 Oct 2026).
What are the usage limits on ChatGPT Plus vs Google AI Pro?
ChatGPT Plus — 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). Google AI Pro — Window: Quota refreshed every five hours until weekly limit; Weekly: Higher weekly rate limit than free; Absolute figure: None published.
Which has had more limit cuts, ChatGPT Plus or Google AI Pro?
ChatGPT Plus: 7 logged changes since 2 Apr 2026 (2 increases, 2 cuts, 3 other). Google AI Pro: 2 logged changes since 19 May 2026 (1 increase, 1 cut, 0 other).
When did ChatGPT Plus and Google AI Pro limits last change?
ChatGPT Plus last changed on 14 Oct 2026: GPT-5.5 retired from Codex for ChatGPT sign-ins. Google AI Pro last changed on 18 Jun 2026: Gemini CLI daily quota replaced by Antigravity weekly cap.
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