A decision for a beginner, not a spec sheet. Scores are our weights. Prices are the public plans, and anything marked verify on the tool page should be re-checked before you pay.
Pick Google Antigravity if you are trying an editor agent without a subscription.
Pick Replit if you are learning by building a web app, script, or simple browser game in one place.
A free agent IDE, with higher quotas on Google AI Pro and Ultra.
Cheapest verified paid plan: Google AI Pro · $19.99/mo
A browser IDE and agent, closest thing here to an all-in-one starter.
Cheapest verified paid plan: Core · $20/mo
Web app or SaaS
Mobile app
Game
Website or landing page
Automation or script
No code
I can follow a change
I already develop
Last verified 2026-10-19
Individual
Free
VerifiedUnlimited Tab and Command requests. Weekly agent quota. Gemini models, including Gemini 3.8 Flash, which the plans doc names as a core agent model. No published prompt count.
The Antigravity pricing page lists this at $0/mo.
Individual
$19.99/mo
VerifiedHigher Antigravity quota, refreshed every five hours until a weekly limit. AI credits can cover overage if you allow it. Also a Google One plan with storage and other Google AI benefits.
The dollar amount is the Google AI Pro price on Google One. Antigravity's own pricing page describes the higher limits and does not print $19.99.
Individual
$99.99/mo
VerifiedHighest Antigravity quota class, refreshed every five hours, plus third-party models. Google labels this 5x Pro Gemini usage.
Price is from Google One and Gemini subscription pages, which are the plans Antigravity docs say raise the quota.
Individual
$199.99/mo
VerifiedThe highest weekly limits Google documents for these plans, labeled 20x Pro Gemini usage.
Same source split as the 5x tier: quota rules on Antigravity docs, price on Google One.
Last verified 2026-10-19
Individual
Free
VerifiedDaily Agent allowance and Free Mode with a daily cap. One published app, listed as 30-day on the Core comparison table. Built-in database. Exact daily credit count is not a single published number.
The 30-day publish window is on the Core plan comparison table. The daily credit count is still not one published number.
Individual
$20/mo
VerifyOn 2026-10-19 the pricing page showed $18/mo billed annually next to $20. The page still mixes the subscription price, the annual rate, and the $20 credit line.
$20 toward more powerful models. The pricing page listed up to 30 hours of Free Mode chat and up to 60 projects on Free Mode. Credits do not roll over.
Core docs list 1 active background task. The pricing page on 2026-10-19 did not print a parallel-task count. The $20 subscription figure is used for matching and marked verify because the page layout mixes it with the annual rate and the credit line.
Individual
$100/mo
VerifyThe pricing page showed $90/mo billed annually on 2026-10-19.
$100 toward more powerful models, more Free Mode usage, up to 15 collaborators, and database rollback up to 28 days. Docs say unused credits roll for two months.
The $100 list price is consistent. The $90 annual rate is marked verify with the rest of this card because the pricing page markup is easy to misread.
Free quota refreshes weekly. Google AI Pro refreshes every five hours until a weekly limit. Ultra refreshes every five hours and has the highest weekly limits. Prompt counts are not published because heavier tasks spend more quota.
On the free plan, wait for the weekly refresh. There is no credit overage.
Starter keeps a daily cap. Core and Pro Free Mode allowances reset every five hours and also have weekly limits, per Replit's plan docs. Core credits reset each billing cycle and do not roll over. Pro credits roll for two months.
Stay in Free Mode for everyday agent work. Power and Max spend credits and Replit asks before a paid action.
Google Antigravity's cheapest paid plan the ranking counts is Google AI Pro at $19.99/mo. Replit's cheapest paid plan the ranking counts is Core at $20/mo. Replit Core is marked verify.
Google Antigravity is for trying an editor agent without a subscription, gemini-first coding on a weekly quota, and a $20-ish step up via Google AI Pro if the free week runs out.
Replit is for learning by building a web app, script, or simple browser game in one place, people who want an IDE without installing one, and a project that needs hosting and a database next to the agent.
Google Antigravity scores 2 out of 5 for someone who does not want to read code. Replit scores 4 out of 5. Replit has the higher no-code score. Better than a pure terminal, and you are still in an IDE. Agent can carry a beginner, and you are still looking at an IDE. Expect files.
Google Antigravity: Free. Unlimited Tab completions and Command requests, Gemini models, and a weekly agent quota. The quota is not a published prompt count. It refreshes weekly, not every five hours. Replit: Daily Agent credits and Free Mode with a daily cap, a built-in database, and one published project. The pricing page does not state one universal credit number.