What to know first
Plus is enough if you mostly chat and use Codex occasionally. Consider Pro 100 if Codex or Work five-hour limits interrupt you often, or if you already spend around $100 a month on the OpenAI API. Pro 100 costs 5 times as much as Plus (AISub's calculation); with the 10x usage Tibo cited, usage per dollar is about 2x Plus (AISub's calculation). On the App Store, the Pro 100 to Plus price ratio ranges from about 3.7 to 6.5 depending on region, so check AISub's price pages and the checkout page before subscribing.
How much do ChatGPT Plus and Pro 100 cost?
OpenAI's Help Center says Plus costs $20/month, billed monthly, with no annual billing. Pro comes in three tiers, Pro 100, Pro 200, and Pro 500, at $100, $200, and $500 a month, also monthly only. The ChatGPT pricing page shows Pro as a single column with a choice of three usage tiers. AISub's US web prices are $20 for Plus and $100 for Pro 100, both excluding tax. See regional ChatGPT subscription quotes.
| Plan | Monthly price | Annual billing | US App Store (AISub, collected 2026-10-31) |
|---|---|---|---|
| Plus | $20 | Not offered | $19.99 |
| Pro 100 | $100 | Not offered | $100 |
Sources: OpenAI: What is ChatGPT Plus?OpenAI: ChatGPT Pro tiersOpenAI: ChatGPT pricingAISub: ChatGPT Plus web pricesAISub: ChatGPT Pro 100 web prices
How much Codex and Work usage do Plus and Pro 100 get?
ChatGPT Work and Codex share the same usage. OpenAI's Codex pricing page gives estimated ranges of local messages per five hours for Plus and says these are estimates, not fixed limits, that weekly limits may also apply, and that cloud tasks use the allowance faster.
Pro currently has no five-hour limit but still has an included allowance. On November 8, 2026 at 05:09 UTC (13:09 Singapore time), Tibo, who works on Codex and ChatGPT at OpenAI, said on X that no Pro plan has a five-hour limit and that Pro 100 gets 10x Plus usage (20x on Pro 200, 50x on Pro 500). The Help Center states the no-five-hour-limit rule, but as of November 9, 2026 it does not list the 10x figure or any Pro 100 message counts. On October 29, OpenAI doubled Pro 100's Work and Codex allowance, with Plus unchanged, and noted that a larger allowance does not guarantee twice as many completed tasks. For what to do when you run out, see Codex usage resets and credits.
| Model | Plus | Pro 100 |
|---|---|---|
| GPT-6.1 Terra | 35–285 | No five-hour limit; about 10x Plus total usage (Tibo, X); no message counts published |
| GPT-6.1 Sol | 15–160 | No five-hour limit; about 10x Plus total usage (Tibo, X); no message counts published |
| GPT-6 Sol | 15–150 | No five-hour limit; about 10x Plus total usage (Tibo, X); no message counts published |
| GPT-6 Astra | 5–45 | No five-hour limit; about 10x Plus total usage (Tibo, X); no message counts published |
| GPT-6 Luna | 350–3,000 | No five-hour limit; about 10x Plus total usage (Tibo, X); no message counts published |
Sources: OpenAI: Codex pricing and usageOpenAI Help Center: Managing usage with GPT-6 Astra in Work and CodexTibo (@thsottiaux), Codex & ChatGPT at OpenAI, on X (2026-11-08 05:09 UTC)OpenAI: ChatGPT Pro tiers
Can both Plus and Pro 100 use GPT-6.1 Terra?
Yes. OpenAI says GPT-6.1 Terra is available in Work and Codex on Plus, Pro, Business, Enterprise, and Edu plans, but not in Chat, and that overall Work and Codex plan limits are unchanged. GPT-6.1 Sol is also available only in Work and Codex.
Once included usage runs out and you switch to credits, Terra costs 25 credits per million input tokens, 1.25 per million cached input tokens, and 125 per million output tokens. This is separate from dollar-based API pricing.
| Model | Input | Cached input | Output |
|---|---|---|---|
| GPT-6.1 Terra | 25 | 1.25 | 125 |
| GPT-6.1 Sol | 50 | 2.5 | 250 |
| GPT-6 Astra | 250 | 25 | 1,250 |
| GPT-6 Luna | 2.5 | 0.25 | 12.5 |
Sources: OpenAI: Codex pricing and usageOpenAI: Using credits for flexible usage in ChatGPT personal plans
What are Pro 100's API credits, and does Plus get them?
- Pro 100, Pro 200, and Pro 500 include $100, $200, and $500 in API credits per monthly billing period. Plus and free trials are not eligible.
- You can claim them after 7 days of paid activity.
- API credits are only for the OpenAI API. They do not increase ChatGPT or Codex usage and do not cover Codex run with an API key.
- Unused credits do not roll over. If you downgrade to Plus, the link ends at the end of the billing cycle.
Sources: OpenAI: API credits benefit for eligible ChatGPT subscriptions
Besides usage, what features differ between Plus and Pro?
The following comes from the ChatGPT pricing page, which combines the three Pro tiers into one column and does not list feature differences per tier.
| Item | Plus | Pro |
|---|---|---|
| GPT Instant context | 54K (about 40 pages of input) | 128K (about 250 pages) |
| Reasoning model context | 256K (about 320 pages) | 400K (about 680 pages) |
| GPT-6.1 Sol | Included | Expanded |
| Pro reasoning (powered by GPT-6 Astra) | Not included | Included |
| Dots and ChatGPT Space | Not included | Included |
| Codex | Included | Expanded |
| Monthly API credits | Not included | Included |
Sources: OpenAI: ChatGPT pricing
On the App Store, how do Plus and Pro 100 prices compare by region?
AISub collected ChatGPT's App Store prices between 08:20 and 08:36 on October 31, 2026 (Singapore time), with prices in 169 of 175 regions; Belarus, mainland China, Hong Kong, Macao, Russia, and Venezuela had none. USD amounts use exchange rates from 08:00 on October 31, 2026 (Singapore time), and the tax basis is marked as unknown.
After conversion, Plus is lowest in the Philippines at ₱999 (about $15.68) and highest in Colombia at COP 99,900 (about $31.57), with a median of $19.99. Pro 100 is lowest in Montenegro at €84.99 (about $94.90) and highest in Norway at 1,190 NOK (about $129.18), with a median of $100. The price ratio column is AISub's calculation of Pro 100 ÷ Plus in local currency; across the 169 priced regions it ranges from 3.65 in Colombia to 6.50 in the Philippines, with a median of 5.00.
| Region | Plus | Pro 100 | Price ratio (AISub calculation) |
|---|---|---|---|
| United States | $19.99 | $100 | 5.00 |
| Türkiye | ₺999.99 (about $20.02) | ₺5,299.99 (about $106.10) | 5.30 |
| Egypt | E£999.99 (about $17.85) | E£5,399.99 (about $96.38) | 5.40 |
| Nigeria | ₦31,500 (about $23.41) | ₦144,900 (about $107.69) | 4.60 |
| India | ₹1,999 (about $21.03) | ₹10,699 (about $112.53) | 5.35 |
| Japan | ¥3,000 (about $19.05) | ¥16,800 (about $106.67) | 5.60 |
| United Kingdom | £19.99 (about $26.76) | £88.90 (about $118.99) | 4.45 |
| Singapore | S$29.98 (about $23.45) | S$137.98 (about $107.95) | 4.60 |
| Malaysia | 99.90 MYR (about $24.62) | 419.90 MYR (about $103.50) | 4.20 |
| Taiwan | NT$690 (about $21.15) | NT$3,300 (about $101.17) | 4.78 |
| Sweden | 249 SEK (about $25.34) | 1,120 SEK (about $113.97) | 4.50 |
| Pakistan | PKR 4,900 (about $17.70) | PKR 27,999 (about $101.16) | 5.71 |
| Philippines | ₱999 (about $15.68) | ₱6,490 (about $101.86) | 6.50 |
| Brazil | R$99.90 (about $18.51) | R$524.90 (about $97.25) | 5.25 |
| Germany | €22.99 (about $25.67) | €102.99 (about $115.00) | 4.48 |
| Colombia | COP 99,900 (about $31.57) | COP 364,900 (about $115.33) | 3.65 |
Sources: AISub: ChatGPT Plus App Store prices by regionAISub: ChatGPT Pro 100 App Store prices by regionAISub: Methodology
How should you choose between Plus and Pro 100?
The following is AISub's guidance. Pro 100's web price is 5 times Plus ($100 ÷ $20, AISub's calculation); with the 10x usage Tibo cited on X, usage per dollar is about 2x Plus (AISub's calculation), though the multiple is not yet in the Help Center. See ChatGPT Pro pricing in 2026.
| Your situation | Suggestion | Why |
|---|---|---|
| Mostly Chat, occasional Codex | Plus | Terra and Sol are available in Codex and Work at one fifth of the price |
| Codex or Work five-hour limits interrupt you often | Pro 100 | Pro currently has no five-hour limit; Tibo says usage is 10x Plus |
| You already use the OpenAI API every month | Pro 100 | $100 in monthly API credits offsets part of your API spend |
| You go over Plus usage only now and then | Plus with credits | After included usage runs out you can buy credits instead of upgrading |
| You need longer context or Pro reasoning | Pro 100 | The pricing page lists the larger context and Pro reasoning only for Pro |
Sources: OpenAI: Codex pricing and usageOpenAI: ChatGPT Pro tiersTibo (@thsottiaux), Codex & ChatGPT at OpenAI, on X (2026-11-08 05:09 UTC)OpenAI: API credits benefit for eligible ChatGPT subscriptionsOpenAI: ChatGPT pricing
Frequently asked questions
How many times Plus usage does Pro 100 get?
In an X post on November 8, 2026, Tibo, who works on Codex and ChatGPT at OpenAI, said Pro 100 gets 10x Plus usage and that no Pro plan has a five-hour limit. The Help Center confirms Pro currently has no five-hour limit, but as of November 9, 2026 it does not list the 10x figure or any message counts.
Sources: Tibo (@thsottiaux), Codex & ChatGPT at OpenAI, on X (2026-11-08 05:09 UTC)OpenAI Help Center: Managing usage with GPT-6 Astra in Work and CodexOpenAI: Codex pricing and usage
Can Plus use GPT-6.1 Terra?
Yes, in Work and Codex only, not in Chat. OpenAI estimates 35–285 local Terra messages per five hours on Plus.
Sources: OpenAI: Codex pricing and usage
Do Pro 100's API credits add Codex usage?
No. API credits are only for the OpenAI API. They do not increase ChatGPT or Codex usage and do not cover Codex run with an API key.
Sources: OpenAI: API credits benefit for eligible ChatGPT subscriptions
Is there annual billing for Plus or Pro 100?
No. OpenAI's Help Center says Plus and Pro are billed monthly.
Sources: OpenAI: What is ChatGPT Plus?OpenAI: ChatGPT Pro tiers
Do I have to upgrade when Plus runs out of Codex usage?
Not necessarily. Plus can buy credits to keep using Codex and Work; included usage is used first, then credits.
Sources: OpenAI: Using credits for flexible usage in ChatGPT personal plansOpenAI: Codex pricing and usage
Official sources and review notes
Sources checked on November 9, 2026. Rates and eligibility rules can change; confirm the latest official guidance and your own agreement.
- OpenAI: ChatGPT pricing
- OpenAI: What is ChatGPT Plus?
- OpenAI: ChatGPT Pro tiers
- OpenAI: Codex pricing and usage
- OpenAI: API credits benefit for eligible ChatGPT subscriptions
- OpenAI: Using credits for flexible usage in ChatGPT personal plans
- AISub: ChatGPT Plus App Store prices by region
- AISub: ChatGPT Pro 100 App Store prices by region
- AISub: ChatGPT Plus web prices
- AISub: ChatGPT Pro 100 web prices
- AISub: Methodology
- Tibo (@thsottiaux), Codex & ChatGPT at OpenAI, on X (2026-11-08 05:09 UTC)
- OpenAI Help Center: Managing usage with GPT-6 Astra in Work and Codex
This guide draws on the public sources listed below. Examples illustrate the calculation methods. AISub is an independent price index and is not affiliated with the product providers discussed.