What's your default build machine setting? If it's Turbo that would use resources a lot more quickly than the Standard option

Thanks so mucj, yeah, I was in turbo mode. what’s the cost of the elastic mode ? It’s not showed, is it free ?

Elastic build machines are billed by CPU minute (starts at $0.0035 per CPU minute). They auto-scale, so usage will vary based on recent builds. It has a smaller starting cost than standard, but it's always billed per CPU minute where standard is billed only if you have On-Demand Concurrent Builds enabled.

There's a lot of flexibility there. The best choice depends on your setup and whether cost or build performance is most important for your project

Try disabling on-demand concurrent builds which is by default set to immediate on Vercel Pro and also switch from Turbo builds to Standard builds, it might take more time to build on standard, but it will decrease the cost drastically.

Thanks a lot for the help. I fixed my issues with the data leak on fast origin transfer which wwas the main reason i switched to pro. If i downgrade my plan to free now, what will happen ? Because the limit was already reached, so will it reset next mounth ? If not, can I transfer the project ? what’s the best way for me to came back to free plan without loosing anything ?