ChatGPT vs Comet: pricing and free tier side by side

ChatGPT vs Comet

Amo and Pimi: Which one to choose between these two

Pimi

Amo, did you know that starting March 18th, Comet made the entire browser free to use — summaries, voice, shopping assistant, and Deep Research are all counted as basic features, and there's no usage cap either!

Amo

Don't get too pleased yet — that's just the "basic browser feature" that's free. If you actually want it to auto-fill forms, book tickets, or send emails as an agent, the quota is limited too — that's not the same thing as ChatGPT Plus's US$20/month full-feature access.

Pimi

Hmph, let me put it another way then, you'll have to admit this: ChatGPT's free version quietly gets downgraded to a smaller model during peak hours, but Comet's basic browser features are at least stably free, no need to worry about traffic conditions.

Amo

I'll give you this point. But Chinese support needs to be stated clearly too — ChatGPT's official site labels it "full," while Comet's currently only labels it "partial." For frequent Chinese Q&A, ChatGPT's interface and response quality are probably still a bit more even.

Pimi

Fine, fine, so what if you actually spend money? Comet Pro is US$20/month, the same price as ChatGPT Plus — see, equally expensive!

Amo

Same price doesn't mean the same thing. Comet is browser-integrated, synthesizing cross-tab summaries; ChatGPT does conversation plus image generation plus voice — a completely different positioning. And I have to be honest even if it's a buzzkill: Comet's own team has mentioned prompt-injection security risks and doesn't recommend using it for sensitive tasks like banking; ChatGPT gets that specific warning less often.

Pimi

Fine, fine, fine, you finished listing the risks, let me wrap it up — if you want to browse the web while it helps you get things done, Comet's basic features are free and enough; if you want to ask about anything and get image generation and voice all in one, ChatGPT Plus's US$20 is more comprehensive.

Amo

There's plenty to compare among similar tools too – Copilot leans into Microsoft office integration, DeepSeek leans into cheap and open-source; the four tools each fit a different niche, it's not about who wins or loses, it's about which scenario fits you – rare that we managed to agree on something without a full argument.

So the conclusion is

ChatGPT and Comet are not the same product: ChatGPT Plus offers a US$20 monthly fee for an all-in-one experience of conversation, Image generation, and voice; Comet, on the other hand, provides a browser with features like page summaries, voice mode, shopping assistants, and in-depth research, which has been fully free globally since October 2, 2025 (initially only available to Max subscribers for US$200/month in July 2025). The paid upgrade to Pro costs US$20, and Max costs US$200, offering more AI agent Quota and background assistant functions. In terms of Chinese support, ChatGPT is fully supported, while Comet is only partially supported, which is an actual difference, not an evaluation. Comet's official documentation has mentioned the risk of security vulnerabilities due to prompt injection, and it is not recommended for sensitive financial operations, which is a difference in usage scenarios, not product quality. The choice between them depends on whether you want a browser with embedded AI to assist you while browsing or a standalone, all-around conversational assistant.

本則評論查證於 2026-08-09 02:32 （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.

• ChatGPT vs Microsoft Copilot
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• ChatGPT vs Grok

ChatGPT and Comet are both Chatbots tools. Pricing, free tiers and language support compared below.

Full paid plans compared

ChatGPT

Comet

Which one should you pick?

Both offer a free plan. Compare paid tiers against your needs.

On entry price, Comet starts at US$5 / mo, cheaper than ChatGPT (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 Comet?

Yes. The complete Chromium browser with basic AI functions (page summary, voice mode, shopping assistant, Deep Research) is completely free and has no usage limit (globally available starting October 2, 2025); however, agent tasks that consume quota (such as auto-form filling, booking, and emailing) have limited quota in the free plan.

How much does Comet cost?

The cheapest is the plan from Comet named Comet Plus, at about US$5 / mo.

Does Comet support Chinese?

Comet only partially supports Chinese.