Which AI assistant is cheapest?

ChatGPT, Claude and Gemini all have a free plan. The lowest paid price we could verify is Google AI Plus at $4.99 a month. The main paid plans are $20 (ChatGPT Plus), $20 (Claude Pro) and $19.99 (Google AI Pro).

Where do the numbers come from?

From each vendor’s own pricing and documentation pages. Every figure links to its source and shows the date we read it. If we could not confirm something that day, the cell says “Not verified”.

Do you test which assistant gives better answers?

Not on these pages. The comparisons cover what vendors publish: prices, limits and which features come with which plan. Where a page talks about quality, it says what it is based on.

ChatGPT, Claude or Gemini? Compare them line by line.

Plans, prices, context limits and features in one matrix. Every figure links to the vendor page it came from and shows the date we read it.

See all three side by side All comparisons

What $0, $20 and $100+ buy, as listed by each vendor
Row	ChatGPT	Claude	Gemini
Free plan	$0GPT-5.6 Luna	$0Sonnet, Haiku	$03.6 Flash
Main paid plan, per month	$20Plus, monthly	$20Pro; $17 if yearly	$19.99Google AI Pro
Heavy-use plans, per month	$100–$500Pro 100 / 200 / 500	from $100Max 5x or 20x	$99.99–$199.99AI Ultra 5x / 20x
Context window in the app	54K–256Kon Plus, by model type	up to 1Mevery plan	Not verifiedno token figure on the plans page
US dollars, read from vendor pages on 1 Oct 2026. Sources and full matrix

Head-to-head comparisons

Each page answers the short question first, then shows the full matrix and the sources.

Claude vs ChatGPTSame $20 price. Different context limits and free-plan features.Open matrix →
Gemini vs ChatGPT$19.99 against $20. Google lists storage with its plan and has a $4.99 tier.Open matrix →
Claude vs ChatGPT vs GeminiAll three land near $20. The matrix shows where each one spends it.Open matrix →

All 9 comparisons

How a comparison is built

The same three steps for every page.

Read the vendor page

Prices, limits and plan features come from OpenAI, Anthropic and Google’s own pricing and documentation pages, not from other review sites.

Stamp the date

Each figure carries the day it was read. Vendors change plans often, so a number without a date is not much use.

Leave blanks blank

If a figure could not be confirmed that day, the cell is marked “Not verified” and says why. Nothing is filled in from memory.

Read the method

Guides

Longer reads on choosing and using AI assistants.

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Ask which one fits your work

The site assistant is not available yet. Until it is, the comparison pages list every plan, price and limit with its vendor source, and corrections can be sent to contact@aiselect.chat.

Common questions

Which AI assistant is cheapest?: ChatGPT, Claude and Gemini all have a free plan. The lowest paid price we could verify is Google AI Plus at $4.99 a month. The main paid plans are $20 (ChatGPT Plus), $20 (Claude Pro) and $19.99 (Google AI Pro).
Where do the numbers come from?: From each vendor’s own pricing and documentation pages. Every figure links to its source and shows the date we read it. If we could not confirm something that day, the cell says “Not verified”.
Do you test which assistant gives better answers?: Not on these pages. The comparisons cover what vendors publish: prices, limits and which features come with which plan. Where a page talks about quality, it says what it is based on.