Amo and Pimi: Which one to choose between these two
Pimi
ChatGPT's Go is US$8, Plus US$20, Pro US$100; Monica's Pro is US$8.3, Max US$16.6, Ultra US$82.9. The entry prices are almost identical – what's there to argue about.
Amo
The entry price is the same, but what you get is different – don't say there's no difference just because the numbers are close. US$8 ChatGPT Go lets you use OpenAI's own models; US$8.3 Monica lets you call multiple providers' models from one interface – same money, one buys depth, the other buys breadth. That's a big difference.
Pimi
You sound like you really know what you're talking about – then explain ChatGPT's free-tier problems too, don't just pick on Monica.
Amo
Fine, I'll say it – it quietly downgrades: after about ten messages on the premium model, it automatically switches to a smaller model, and the interface doesn't tell you. That's the easiest thing about its free tier to misjudge.
Pimi
Hmph, but I have to point out its free tier is the most fully-featured — chat, search, image generation, voice, file upload, all included, and the output is commercially usable with no watermark. You can't deny that.
So the conclusion is
The entry prices are nearly identical (US$8 vs US$8.3) — the difference is depth vs. breadth: for OpenAI only, pick ChatGPT; to switch across multiple model providers from one interface, pick Monica. ChatGPT's free tier has the most complete features but silently degrades.
本則評論查證於 2026-08-09
（13 天前）
，價格與額度以官方最新公告為準。
They also argued about these things on another page.
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)
US$0: 40 standard-model uses per day on a shared quota across Claude 4.5 Haiku / Gemini 3.1 Flash-Lite / GPT-5.4 mini, limited trial of image and video generation, limited trial of ChatPDF, time-limited AI Agent trial, up to 3 logged-in devices (read directly in a browser from the Traditional Chinese monica.im/pricing on 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
第三方來源指稱2026年4月新增之較低階Pro方案，未經官網直接確認；⚠️2026-07-26官網代理抓取(r.jina.ai)顯示官方文案為單一「Pro: From US$100/month, 5x or 20x more usage」，未見「Pro Max」官方命名，此Pro/Pro Max兩檔並存之建模方式待人工覆核是否應合併為單一Pro(內含5x/20x用量選項) ｜🇹🇼 台灣實際牌價 NT$3300/月（2026-08-09 台灣連線直讀官網繁中版，非美元匯率換算，依 10.5 分開記錄）
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 / Person / mo（5 Person ≈ 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
Monica
Plan
Price
What you get
Pro
US$8.3 / mo（年繳均攤）
US$99/year billed annually (about US$8.3/month); 5,000 base-model messages + 200 advanced-model messages per month, 1,500 premium credits, 5 devices. The official site doesn't display a monthly-billed list price (2026-08-09 tested: the toggle switch had no effect)
Max
US$16.6 / mo（年繳均攤）
US$199/year billed annually (≈ US$16.6/month), a limited-time 33% off, list price US$299/year; unlimited use of standard + premium models, 4,500 premium credits, 5 devices. Formerly named Unlimited; officially still marked as in beta. Monthly list price not shown on the official site
Ultra
US$82.9 / mo（年繳均攤）
Annual billing US$995/year (≈US$82.9/month), 17% savings with annual billing; unlimited use of standard + advanced models, 20,000 advanced points, 10 devices. The monthly list price is not shown on the official site
Which one should you pick?
Both offer a free plan. Compare paid tiers against your needs.
Monica has no public paid plan; ChatGPT starts at about US$8 / 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 Monica?
Yes. US$0: 40 standard-model uses per day on a shared quota across Claude 4.5 Haiku / Gemini 3.1 Flash-Lite / GPT-5.4 mini, limited trial of image and video generation, limited trial of ChatPDF, time-limited AI Agent trial, up to 3 logged-in devices (read directly in a browser from the Traditional Chinese monica.im/pricing on 2026-08-09)
How much does Monica cost?
The cheapest is the plan from Monica named Pro, at about US$8.3 / mo（年繳均攤）.
Does Monica support Chinese?
Monica offers full Chinese interface support.
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