Every vibe coding tool advertises a monthly price. None of them advertise what a weekend actually costs, because the answer depends on the most expensive variable in this hobby: how many times the AI has to fix its own work.
We’ve burned enough credits across these platforms to map it honestly. Here’s the real math for a typical weekend build - call it a small web app with a database, auth, and a handful of screens - on Lovable, Bolt, v0, and Replit, using their actual published pricing.
The clean-run fantasy
First, the scenario the pricing pages imagine: you write good prompts, the AI nails it, you ship Sunday night.
On Lovable’s Pro plan, 25€/month buys 100 credits. On Bolt Pro, $25/month buys 10 million tokens. Replit Core is $20/month (billed annually) with $25 of usage credits included. v0’s Team plan runs $30/user/month with $30 of included credits.
In a clean run, those numbers are comfortable. A focused scaffold-and-polish weekend fits inside a Lovable 100-credit month or Bolt’s base token allowance, and free tiers can even carry a small project: Bolt’s free plan includes a genuinely generous 1M tokens a month (capped at 150K a day), and Lovable’s free tier gives 5 daily credits, up to 50 a month. The daily caps are the catch for weekend warriors - your building comes in a 48-hour burst, and the free plans meter you by the day.
What debugging actually does to the bill
Now the real scenario. Saturday afternoon, the build hits its first proper bug. This is where each platform’s pricing model shows its character.
Lovable bills per prompt, in credits, and the community has documented the squeeze: users report credit consumption climbing from around 1.2 per prompt to 3-4, with even questions about the code costing fractions of a credit. The killer pattern is the regression loop - the agent says “fixed!”, the bug survives, and you pay again. Our own invoice-tool build ate most of a 100-credit month, half on repair work. The saving grace: unused credits roll over on paid plans, so a quiet month banks credits for a loud one. If you outgrow 100 credits, the tiers climb steeply: 200 credits at 50€/month, 400 at 100€, all the way to 10,000 at 2,250€.
Bolt bills in tokens, and tokens measure how much code the AI reads and writes, not how much progress you made. The community’s sorest point is exactly that gap: users describe the AI rewriting entire files while failing to apply the actual change, burning tokens for zero movement, and error-fixing rounds that consume real chunks of the monthly allowance. One documented complaint describes blowing a monthly limit worth at least $20 on AI-generated errors. Scaling up: 26M tokens at $50/month, 55M at $100. Rollover exists but only while you stay subscribed.
v0 is frontend-only, so a weekend with it is about UI, but the same physics apply: credits are consumed by model token usage, failed generations still bill, and the community’s experience includes burning $20 of credits in a single day after the pricing change. The widely reported pattern of output quality degrading past 5-10 chat messages makes long polishing sessions a double loss - worse code, billed anyway. Generate, export, stop.
Replit is the most honest and the most volatile: effort-based pricing means the bill reflects task complexity and runtime. Small tweaks are cheap. The expensive sessions are precisely the desperate ones - an agent looping on its own bug late on Sunday. Community reports run from credits gone “in under ten minutes” to $350 in a single day, plus surprise database operation charges. Replit Pro ($95/month annually) includes $100 of credits with discounted bulk tiers above that. The non-negotiable move here: set a spending alert before the weekend starts.
The mechanism to actually understand
Strip away the brand names and one mechanism drives every surprise bill: iteration is billed like creation. The pricing models can’t tell a new feature from the fourth attempt at the same fix. So the cost of your weekend isn’t set by your app’s size - it’s set by how many loops you get stuck in.
That suggests a few cheap defenses. Write your first prompt like a proper brief, because vague prompts are pre-paid rework. Scope brutally small, because every feature is a future debugging surface. On token platforms, start fresh sessions rather than pushing degraded long chats. And know each platform’s relief valve: Lovable’s rollover, Bolt’s free tier for experiments, Replit’s usage alerts.
The other way to not pay per bug
One more comparison point, because it reframes the math. Flat-priced no-code platforms sidestep the loop tax for a whole category of projects. Softr, the business-app builder we use for portals and internal tools, has AI credits too (5 to 100 a month depending on plan), but with a structural difference: everything the AI can build you can also adjust manually in the visual editor, so a bug fix or layout change costs zero credits and the plan price is the whole bill. For a weekend build that’s secretly a business tool, that pricing model alone is a reason to start there - the full case is in our client portals ranking.
For everything else, budget for the loops, not the brochure. The weekend costs what your worst bug decides it costs.