The easiest pitfall to encounter with the free version: it suddenly downgrades to a smaller model halfway through use, with a noticeable decline in response quality, but the interface doesn't explicitly state this.
They also argued about these things on another page.
2026-09-21Daily auto-check logged — see the Chinese version for details
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Show the remaining verification history (43 more)▼
2026-09-19Daily auto-check logged — see the Chinese version for details
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2026-09-09Daily auto-check logged — see the Chinese version for details
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2026-09-05Price or plan change recorded — see the Chinese version for the exact wording
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2026-08-07 21:49:362026-08-07 21:49 Checked: ChatGPT's pricing plans include Free, Go, Plus, Pro, Business, and Enterprise. The Free plan is free, the Go plan is US$8 per month, the Plus plan is US$20 per month, and the Pro plan starts at US$100 per month. Compared to the previous check, there have been changes in prices or plans, with the addition of the Pro plan starting at US$100 per month, and changes in the price and details of the Business plan. Source: https://chatgpt.com/pricing
2026-08-06 12:02:26Daily auto-check logged — see the Chinese version for details
2026-08-05 22:29:022026-08-05 22:29 Checked: ChatGPT's pricing plans include Free, Go, Plus, Pro, etc. The Free plan is free, the Go plan is US$8 per month, the Plus plan is US$20 per month, and the Pro plan starts at US$100 per month. Compared to the previous check, the Pro plan's price and content have changed, with new options for 5x or 20x more usage. Source=https://chatgpt.com
2026-08-03 03:42:31Daily auto-check logged — see the Chinese version for details
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2026-07-27Daily auto-check logged — see the Chinese version for details
2026-07-27Daily auto-check logged — see the Chinese version for details
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2026-07-27Daily auto-check logged — see the Chinese version for details
2026-07-27Daily auto-check logged — see the Chinese version for details
2026-07-27The prices for ChatGPT remain unchanged: Go at US$8, Plus at US$20, Pro at US$100/US$200, and Business at US$25 (or US$20 with annual payment). Additionally, the official website has introduced a free ChatGPT for Teachers plan (limited to verified US K-12 teachers until June 2027), which is not included in our pricing comparison as it is outside our scope.
2026-07-26 11:02:57Daily auto-check logged — see the Chinese version for details
2026-07-26The official website (chatgpt.com/openai.com) is still blocking crawlers and cannot be directly checked. The help.openai.com articles also cannot be directly fetched. According to secondary sources (cross-referencing help.openai.com article titles and aggregating multiple websites), the "Pro Max" name is unofficial, and both the US$100 and US$200 tiers may simply be called "Pro", but this is not confirmed with sufficient confidence to make changes; additionally, a new Business plan at US$25/person/month is mentioned, but this has not been verified through the official website and is listed as pending verification.
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2026-07-25Daily auto-check logged — see the Chinese version for details
2026-07-25The official website (chatgpt.com/openai.com) blocks crawlers and cannot be directly verified; multiple third-party sources indicate that Go is US$8 and Plus is US$20, which remain unchanged, and also claim that a lower-tier Pro plan is added at US$100 (the original US$200 Pro plan is suspected to be renamed Pro Max and coexist), this change has not been officially confirmed, sources include felloai.com, cloudzero.com, techjacksolutions.com, and aipricing.guru
2026-07-25Daily auto-check logged — see the Chinese version for details
Continuously re-checked, every fact dated
Book editions on Amazon
Explore two language/cover editions about AI agents and AI work workflows. Author: AM&PM Editorial Team.
The world's most-used AI assistant, handling conversation, search, image generation, and voice—all in one place.
Free Version Limitations
NT$0/month, open to everyone. The official site lists the free-tier limits one by one: limited access to GPT-5.5 Instant, limited messages and uploads, limited and slower image generation, limited deep research, limited memory and context, limited Codex, limited ChatGPT Work desktop app. The only place the official site gives concrete numbers is the plan comparison table: free-tier GPT Instant total context window 27K (Go/Plus 54K, Pro 128K); free-tier single-input cap about 12 pages of text (Go/Plus about 40 pages, Pro about 250 pages); the context window for reasoning models is marked depends on the situation for the free tier (Go/Plus 256K, Pro 400K). Response time on the free tier is marked as limited by system resources and service conditions; only paid plans are fast. Chat history is unlimited on the free tier. Whether content is used for model training can be opted out of. The official site has never published a concrete messages-per-day figure, and this site does not fill in an estimate. (Read directly from chatgpt.com/zh-Hant/pricing over a Taiwan connection on 2026-08-09)
Available Models And Quantity
Model
Free quota
Calculate Time Window
Description
GPT-5.3
About 10 items
every 5 hours
The quota is automatically downgraded to a smaller model when it is used up, rather than being completely unusable.
GPT-4 mini (downgraded)
No clear upper limit
—
Default model after quota is used up
Free Usage Limit
Features
Free quota
Description
Image generation
about 2-3 per day
The actual number of instances will fluctuate based on server load.
File upload
3 files per day
Context length
16K
The paid version is longer
Voice chat
Available (Standard)
Advanced voice features require a fee
Quota Resets At
Rolling calculation, not resetting to zero at midnight every day - after using it up, you need to wait for 5 hours for the message to slowly release the quota
Terms Of Use
Registration is required; if personalized ads are turned off in settings, the quota will be further reduced to around 5 instances on an ongoing basis. Each entry displays its last verification date
Best for: People who use it occasionally, but the free version's quota is not enough
US$8 / mo
Only adds capacity, not features. | 🇹🇼 Actual Taiwan list price NT$270/month (read directly from the Traditional Chinese official site via a Taiwan connection on 2026-08-09, not a USD exchange-rate conversion, logged separately per rule 10.5).
Which Model
GPT-5.2 Instant
Usage Quota
The conversation and file upload limit is about 10 times that of the free version
Max Reading Time
approximately 40 pages of text (much longer than the free version)
This Plan Includes
Higher message quota
Upload more files
Image generation quota increase
Not Included
Advanced Reasoning Model (GPT-5.5 Thinking)
Task Management
Customized GPT
Deep Research
What Sets Us Apart
Only increasing quantity, not functionality - to get a smarter model, you need to upgrade to Plus
Best for: People who need AI to help with their thoughts every day at work
US$20 / mo
| 🇹🇼 Actual Taiwan list price NT$690/month (checked 2026-08-09 via a Taiwan connection reading the official Traditional Chinese site directly — not a USD exchange-rate conversion, recorded separately per 10.5)
Best for: Heavy users who spend all day on AI, researchers, or those with a large amount of programming work
US$100 / mo
A third-party source mentioned that a lower-tier Pro plan was added in April 2026, but this has not been directly confirmed on the official website; ⚠️as of 2026-07-26, the official website agent (r.jina.ai) shows the official description as a single "Pro: From US$100/month, 5x or 20x more usage", without any mention of "Pro Max", and it remains to be manually reviewed whether this Pro/Pro Max two-tier model should be merged into a single Pro plan (with 5x/20x usage options) ｜🇹🇼 The actual price in Taiwan is NT$3300/month (as of 2026-08-09, directly read from the official website's Traditional Chinese version in Taiwan, not converted from USD, recorded with a decimal point of 10.5)
Which Model
GPT-5.5 Pro (Most Powerful Inference)
Usage Quota
The US$200 version is approximately 20 times the quota of Plus
Max Reading Time
Longest
This Plan Includes
GPT-5.5 Pro model
20 times the usage quota
All features of Plus
What Sets Us Apart
The price difference is 10 times, it's only worth it if you really hit the Plus limit every day - try using Plus first, and upgrade when you reach the limit.
The original database's US$200 Pro plan currently coexists with a lower-level Pro plan (from a third-party source, not directly confirmed on the official website); ⚠️as of 2026-07-26, the official website's proxy capture did not show "Pro Max" as an official name, possibly fabricated by a third party or actually referring to the 20x usage option of the Pro plan, pending manual review
Self-serve enterprise plan, per user/month (from third-party sources, not directly confirmed on the official website); as of 2026-07-26, a secondary source (help.openai.com summary) states that the actual price is US$20/person/month billed annually or US$25/person/month billed monthly (with a minimum of 2 people), not directly confirmed on the official website
Long-form writing and document quality are its strengths, with the paid version including the Claude Code engineering tool
FreeThe quota is calculated based on a rolling 5-hour usage window (not simply resetting at a fixed number every day), and general conversations can be used for around 10-20 times, excluding Claude Code.
Google has the deepest ecosystem integration of AI, with a generous free version and frequent discounts for student plans.
FreeNT$0/month, free to anyone with a Google account. Model available: Gemini 3.6 Flash; the official site states plainly that access to 3.1 Pro may vary, meaning free-tier access to Pro fluctuates and is not guaranteed. Features included on the free tier: image generation and editing, Deep Research, Gemini Live, Canvas, Gems, Gemini Notebook (research and writing), the Google Flow creative studio, plus limited usage of Nano Banana Pro. Cloud storage 15 GB (shared across Gmail/Drive/Photos). How the quota is counted and when it resets, in the official footnote's own words: the Gemini app measures usage limits by compute, which depends on prompt complexity, the features you use and conversation length; usage resets every 5 hours, up to a weekly usage cap. In other words the free tier is not a fixed number of messages per day but a compute allowance that resets every 5 hours plus an overall weekly cap; long conversations, Deep Research and image generation burn through it faster than plain chat. When the quota runs out you can buy AI credits. The official site does not publish the specific compute figure for the free tier. (Read directly from gemini.google/subscriptions over a Taiwan connection on 2026-08-09)
X (Twitter) integrates AI, providing real-time information with a provocative style as its selling point
FreeThe official site publishes no concrete usage figures at all for the free tier, and this site does not fill in an estimate. Verification trail (exhausted): grok.com/pricing returns HTTP 200 but the whole page is rendered by JavaScript, so the static HTML contains no plan names or price text, only Stripe price IDs; opening it in a real browser hits a Cloudflare human-verification wall, which we do not bypass; x.ai/grok returned 403 three times in a row (blocked, not 404). What can be confirmed: free use does exist and is US$0, because in the in-app purchase list on the official Apple App Store listing every paid item belongs to the SuperGrok range, so basic chat requires no payment. Third-party felloai.com states plainly that xAI has never published free-tier numbers anywhere, and says the free tier only gets the lighter Grok 4 Mini, includes basic real-time web and X search, has limited voice mode, and that image and video generation were removed from the free tier on 2026-03-19. The widely circulated figure of about 10 messages every 2 hours has no official backing and is not used here. (Verified 2026-08-09)
Related Guide：Is ChatGPT Go (US$8/mo) Worth It? Every Limit Compared, 2026
ChatGPT Go at US$8/month is 'more quota, no new features'. Context window 27K→54K, input 12→40 pages — verified against the official pricing page. Last checked 2026-08-14.
🎁 ChatGPT Go Deal: US$8/Month, the Cheapest Paid Plan (2026) — ChatGPT Go is US$8/month, 60% cheaper than Plus. A breakdown of ChatGPT plan pricing, free-tier limits, and who the Go plan is right for. Last verified: 2026-08-08.
