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)
The 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)
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).
Plus
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)
Pro
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)
Pro Max
US$200 / mo
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
Business
US$25 / user / mo（5 user ≈ US$125/mo）
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
Grok
Plan
Price
What you get
SuperGrok Lite
US$10 / mo
US$10/month. Price taken from the official listing on the Apple App Store's in-app purchase list (grok.com's pricing page is JS-rendered and the text can't be scraped).
SuperGrok
US$30 / mo
US$30/month. Same source; third-party felloai also lists US$30/month. Annual payment item on App Store lists US$300/year
SuperGrok Plus
US$100 / mo
US$100/month. Same source as above
SuperGrok Heavy
US$300 / mo
US$300/month. Source: same as above
Which one should you pick?
Both offer a free plan. Compare paid tiers against your needs.
On entry price, ChatGPT starts at US$8 / mo, cheaper than Grok (US$10 / mo).
FAQ
Is there a free version of ChatGPT?
Yes. 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)
How much does ChatGPT cost?
The cheapest is the plan from ChatGPT named Go, at about US$8 / mo.
Does ChatGPT support Chinese?
ChatGPT offers full Chinese interface support.
Is there a free version of Grok?
Yes. The 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)
How much does Grok cost?
The cheapest is the plan from Grok named SuperGrok Lite, at about US$10 / mo.
Does Grok support Chinese?
Grok only partially supports Chinese.
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