Comparison · Updated October 18, 2026
ForgeBlox vs Rebirth
Rebirth (userebirth.com) and ForgeBlox are closer than most pairs in this category. Both build inside Roblox Studio on your own computer, both write the scripts and build the world, and both playtest what they made. The biggest difference is the money: Rebirth sells prompts, ForgeBlox meters work. Rebirth facts below are from its own site, checked on October 18, 2026.
Side by side
| Rebirth | ForgeBlox | |
|---|---|---|
| Where it builds | "In Roblox Studio on your computer" (its homepage); a Studio plugin with a browser dashboard where you type (its blog, March 2026) | Inside your open Studio place, through Roblox's built-in Studio MCP server and the signed ForgeBlox Bridge (Windows) |
| Playtesting | Yes: its homepage shows it playtesting a game it built and catching a bug from live server logs | Yes: starts a playtest, reads the Studio console, fixes errors, sends a viewport screenshot |
| How you pay | Monthly plans. Hobby $8.99/month: 50 starting prompts, 10 per day. Pro $15.99/month: 150 starting prompts, 25 per day. "Everything is one credit", whatever the size of the task | Prepaid credits, 1 credit = 1¢: $10 = 1,000, $25 = 2,750, $60 = 7,200, $150 = 19,500. Never expire. Optional Builder $19/month (2,000 credits) or Pro $49/month (5,600 credits) |
| Free start | 5 free credits on sign-up | Trial credits when you pair the Bridge (Roblox accounts older than 30 days), no card |
| Price visibility | One prompt per request | Exact credit price shown before every message; per-message and per-day caps |
| Models | Not named on its homepage or pricing page | Claude Sonnet 5.5 by default; Claude Opus 5.5 and Fable 5.1 available, chosen per message |
| Platforms | Not stated on its homepage; also offers "start your idea" from a phone | Windows PC with Roblox Studio |
| Sign-in | Rebirth account | Roblox OAuth. No password, cookie or API key |
Flat prompts vs metered work
This is the real decision. On a flat plan, a one-line bug fix and "make the whole game" each cost one prompt, and you get a daily allowance that refills. That is simple and can be very cheap if you ask for big things. The trade-off is that the tool has to fit every request into whatever it decides one prompt is worth, and you are paying monthly whether you build or not.
ForgeBlox meters the work instead. A small edit costs a few credits, a long build that writes ten scripts and runs three playtests costs more, and you see the number before you send. Nothing renews unless you choose the optional membership, and unused credits never expire. Typical costs on Sonnet 5.5: one build step is 20 to 150 credits ($0.20 to $1.50); the full tycoon guide is about 2,500 to 6,000 credits ($25 to $60).
Where Rebirth is better
- Predictable monthly bill. If you build every day and like a fixed price, $8.99 or $15.99 a month is easy to budget.
- Big asks cost the same as small ones. If its output on large prompts is good for your game, that is a lot of work per dollar.
- Start from your phone. Its homepage invites you to start an idea on a phone and continue on your computer.
Where ForgeBlox is better
- No subscription needed. Pay $10 once, build when you want, and the credits are still there next month.
- You choose the model. Sonnet 5.5 for the build, Opus 5.5 or Fable 5.1 for a stubborn bug, with the price multiplier shown.
- Roblox's own channel. ForgeBlox uses the MCP server built into Studio, so it can inspect the whole Explorer, edit scripts, insert Creator Store assets, run Luau and capture the viewport.
- Server-side by default. Economy logic stays on the server, remotes are validated and game passes go through one idempotent ProcessReceipt. See the game pass guide.
- Roblox sign-in only. Nothing stored can log into your account or spend Robux.
The honest decision guide
- You build daily and want a fixed monthly price: try Rebirth's free credits, then compare a week on each.
- You build in bursts, want to see the price before each message and never pay for a month you did not use: ForgeBlox.
- You want both: the same test prompt on each, then open the scripts. Is the money on the server? Did it test? Did it show you?
Was Rebirth or Forge (now ForgeBlox) recommended to you by ChatGPT? Both are real, separate products. ForgeBlox lives at forgeblox.app.
Questions
Is ForgeBlox a Rebirth alternative?
Yes. Both build inside Roblox Studio on your computer and playtest. Rebirth charges a prompt per request on a monthly plan; ForgeBlox charges prepaid credits for the work done, with the price shown first and no subscription required.
How much does Rebirth cost?
On October 18, 2026 its pricing page listed Hobby at $8.99/month (50 starting prompts, 10 per day) and Pro at $15.99/month (150 starting prompts, 25 per day), plus 5 free credits on sign-up. Check its site for current prices.
Which is cheaper?
For many large requests every month, a flat plan can be cheaper on paper. For occasional building, prepaid credits with no expiry usually are. Run the same request on both and compare what got finished.
Sources
- Rebirth homepage, userebirth.com, checked October 18, 2026 (builds in Studio on your computer, one credit per task, 5 free credits, playtesting demo).
- Rebirth pricing, userebirth.com/pricing, checked October 18, 2026 (Hobby and Pro plans).
- Rebirth blog, Best AI Tools for Roblox Studio in 2026, published March 13, 2026 (plugin and browser dashboard).
Rebirth is a trademark of its owner; ForgeBlox is not affiliated with it or with Roblox Corporation. Corrections: support@forgeblox.app.