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 GitHub Copilot if you want an assistant inside VS Code, JetBrains, or GitHub.
Pick Google Antigravity if you are trying an editor agent without a subscription.
An IDE assistant at $10 a month, if you already live in GitHub.
Cheapest verified paid plan: Pro · $10/mo
A free agent IDE, with higher quotas on Google AI Pro and Ultra.
Cheapest verified paid plan: Google AI Pro · $19.99/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
VerifyA limited free tier. The plans FAQ still lists 2,000 completions and 50 chat requests. The billing docs say 2,000 completions a month plus an AI credit allowance whose size is not stated, with auto model selection only.
The free price is real. On 2026-10-19 the chat allowance and the credit allowance still disagree across GitHub's own pages, so this row stays verify.
Individual
$10/mo
Verified1,500 AI credits a month (1,000 base + 500 flex). Completions and next edit do not use credits. 1 credit = $0.01.
From GitHub's usage-based billing docs for individuals.
Individual
$39/mo
Verified7,000 AI credits a month (3,900 base + 3,100 flex). Completions stay unlimited.
Flex allotments can change. Base credits are tied to the subscription price.
Individual
$100/mo
Verified20,000 AI credits a month (10,000 base + 10,000 flex).
The individual plan for sustained agent work.
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.
Monthly. Included credits do not roll over. Base credits are used before the flex allotment.
Wait for the monthly reset.
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.
GitHub Copilot's cheapest paid plan the ranking counts is Pro at $10/mo. Google Antigravity's cheapest paid plan the ranking counts is Google AI Pro at $19.99/mo.
GitHub Copilot is for a developer who wants an assistant inside VS Code, JetBrains, or GitHub, staying near $10 a month, and web app and script work where you already have the repo open.
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.
GitHub Copilot scores 1 out of 5 for someone who does not want to read code. Google Antigravity scores 2 out of 5. Google Antigravity has the higher no-code score. Copilot assumes an editor. It is the wrong first tool if you do not want files. Better than a pure terminal, and you are still in an IDE.
GitHub Copilot: Free is real, with a tight cap. The plans FAQ still says 2,000 completions and 50 chats. A later billing post describes limited completions plus limited chat and agent usage. Confirm the live counter. 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.