Blog
Rebirth AI for Roblox vs PromptBlox (2026 comparison)
Rebirth is an AI plugin that works inside Roblox Studio; PromptBlox builds your game in a browser. Compare free credits, pricing, existing games and testing.
Short answer: Rebirth is an AI assistant that works inside Roblox Studio, while PromptBlox builds a game in your web browser and hands it to Studio as a file. Both start from plain-language requests. The difference is where you work and what you start from.
- Rebirth may suit you if you already work in Roblox Studio, want AI help inside a place you are building, or want to add features to an existing game.
- PromptBlox may suit you if you want to start a new game from a description without setting up Studio first, see a 3D preview while it builds, and keep saved versions of each change.
Rebirth and PromptBlox side by side
| Question | Rebirth | PromptBlox |
|---|---|---|
| Where you work | In Roblox Studio, connected through the Rebirth plugin. | In a web browser. Studio comes in when you playtest and publish. |
| What it works on | New or existing places open in Studio. Its site says it reads the place’s objects and scripts. | A new game from your description, or an imported .rbxlx place up to 25 MB. |
| Testing | Rebirth says it can play the game in your Studio session and read server logs to fix errors. | A 3D preview while it builds. You export the place and playtest it in Studio. |
| How usage is counted | One credit per prompt, whatever the size of the task. | A weekly usage allowance. Larger requests and higher build levels use more. |
| Free option | 5 free credits when you sign up. | Free plan with Light builds and a small weekly allowance. |
| Paid plans | Hobby $8.99 a month, Pro $15.99 a month. | Lite $9.99, Pro $15.99, Max $35.99, Ultra $99.99 and Ultra+ $200 a month. |
Prices were checked on September 25, 2026, on each company’s own pricing page, and can change. Rebirth details come from its website, listed in the sources below. We did not test Rebirth for this article.
Is Rebirth free?
Rebirth’s pricing page says new accounts get 5 free credits and that its Discord offers ways to earn more. It lists two paid plans: Hobby at $8.99 a month, which starts with 50 prompts and refills 10 a day, and Pro at $15.99 a month, which starts with 150 prompts and refills 25 a day. A credit is one prompt, whether the prompt fixes one line or builds a whole game.
PromptBlox counts usage differently. Each plan has a weekly usage allowance shown as a percentage meter, and builds and edits draw on it according to the build level and the work involved. The Free plan includes Light builds. Pro adds Medium, Max adds High, and Ultra and Ultra+ add Ultra. See the pricing page for current plans.
How building a game in PromptBlox works
- Describe the game. In Create, write the setting, what players do and how they win, and pick a build level your plan includes.
- Follow the build. PromptBlox makes one concept image as the visual reference, then builds the world and scripts while you watch the Activity feed and a 3D preview.
- Refine in chat. Ask for one change at a time, for example “Make the delivery point visible from spawn and keep the reward the same.” Saved versions stay in History.
- Export and playtest. Download the
.rbxlxfile, open it in Roblox Studio and playtest the full loop before you publish.
The first build is a starting point, and build time depends on the level and scope. If you make changes by hand in Studio, keep that file: Studio edits do not sync back into PromptBlox. The PromptBlox v2.0 release notes cover build levels, Game Graph and game import.
Where each tool fits
Rebirth is built around Roblox Studio. Its site describes reading the objects and scripts already in your place and running code in your session, which fits creators who are comfortable in Studio or who are adding to an existing game.
PromptBlox is built around starting from an idea. You do not need Studio installed until you playtest, the build happens in a browser with a preview you can follow, and each chat edit is saved as a version you can return to. You can also use both: open a PromptBlox export in Studio and keep working with the Studio tools you prefer.
Sources
Checked on .
- Rebirth homepage and FAQ
- Rebirth pricing page and FAQ
- Roblox Studio setup requirements
- PromptBlox pricing, terms and v2.0 release notes
Frequently asked questions
What is Rebirth AI for Roblox?
Rebirth (userebirth.com) is an AI tool for Roblox development that connects to Roblox Studio through a plugin. Its website says it reads your place’s objects and scripts, writes and runs Luau code in your Studio session, and works on new or existing places.
Is Rebirth free?
New Rebirth accounts get 5 free credits, and Rebirth says its Discord offers ways to earn more. On September 25, 2026 its pricing page listed Hobby at $8.99 a month and Pro at $15.99 a month. Rebirth counts one credit per prompt, whatever the size of the task.
How is PromptBlox different from Rebirth?
PromptBlox runs in a web browser. You describe a game, watch a 3D preview while it builds, refine it in chat and export a .rbxlx place to open in Roblox Studio. Rebirth works inside Studio on the place you have open.
Can PromptBlox work on an existing Roblox game?
You can import a .rbxlx place up to 25 MB as a new PromptBlox project and refine it in chat. Keep the original file and check the result in Roblox Studio, especially custom assets and scripts.
How does PromptBlox pricing compare?
PromptBlox uses a weekly usage allowance instead of one credit per prompt, so bigger requests use more of it. The Free plan includes Light builds and a small weekly allowance. Paid plans start at $9.99 a month (Lite) and add a larger allowance and higher build levels.
Who can use PromptBlox?
PromptBlox is for ages 13 and up. Users aged 13 to 18 should have a parent or guardian review the terms. You also need a Windows or Mac computer with Roblox Studio to playtest and publish the exported game.
Describe the game you want to make and build it in your browser.
Start creating