The web version offers basic text conversation for free; advanced features such as Copilot Chat, Researcher/Analyst agents, and image generation in Office require Microsoft 365 Premium (US$19.99/month) or an M365 subscription.
NT$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)
Replacing the original Copilot Pro, the highest personal plan; US$199.99/year, includes advanced Copilot features (Researcher/Analyst agents, AI image generation, etc.) and up to 6TB of space; official website promotion (discovered on 2026-07-30): first month free trial, no expiration date specified, source=microsoft.com/en-us/store/b/copilotpro
M365 Business edition
官方報價（洽詢）
Available by subscription, M365 Personal (US$9.99/month) and Family (US$12.99/month) now both include basic Copilot functionality
Gemini
Plan
Price
What you get
AI Plus
US$4.99 / mo
Corrected from US$7.99 to US$4.99 (a permanent official price cut effective 2026/6/9, not a limited-time discount; storage went from 200GB to 400GB) | 🇹🇼 Actual Taiwan list price NT$165/month (read directly from the Traditional Chinese official site via a Taiwan connection on 2026-08-09, not a USD exchange-rate conversion — recorded separately per rule 10.5)
AI Pro
US$19.99 / mo
🇹🇼 Actual Taiwan list price NT$650/month (2026-08-09, read directly from the official Traditional-Chinese site via a Taiwan connection, not a USD exchange-rate conversion, recorded separately per 10.5)
AI Ultra 5x
US$99.99 / mo
The original single US$250 Ultra tier, restructured into a new plan (5x the usage) | 🇹🇼 Actual Taiwan list price NT$3,300/month (2026-08-09, read directly from the official Traditional-Chinese site via a Taiwan connection, not a USD exchange-rate conversion, recorded separately per 10.5)
AI Ultra 20x
US$199.99 / mo
The original single US$250 Ultra tier, restructured into a new plan (20x the usage, lower price than original) | 🇹🇼 Actual Taiwan list price NT$6,500/month (2026-08-09, read directly from the official Traditional-Chinese site via a Taiwan connection, not a USD exchange-rate conversion, recorded separately per 10.5)
Which one should you pick?
Both offer a free plan. Compare paid tiers against your needs.
On entry price, Gemini starts at US$4.99 / mo, cheaper than Microsoft Copilot (US$19.99 / mo).
FAQ
Is there a free version of Microsoft Copilot?
Yes. The web version offers basic text conversation for free; advanced features such as Copilot Chat, Researcher/Analyst agents, and image generation in Office require Microsoft 365 Premium (US$19.99/month) or an M365 subscription.
How much does Microsoft Copilot cost?
The cheapest is the plan from Microsoft Copilot named Microsoft 365 Premium, at about US$19.99 / mo.
Does Microsoft Copilot support Chinese?
Microsoft Copilot offers full Chinese interface support.
Is there a free version of Gemini?
Yes. NT$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)
How much does Gemini cost?
The cheapest is the plan from Gemini named AI Plus, at about US$4.99 / mo.
Does Gemini support Chinese?
Gemini offers full Chinese interface support.
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