What Are Chaldeas and Laplace in Chaldea?

Updated

Chaldea (chaldea.center) is a cross-platform tool for Fate/Grand Order made up of two parts: Chaldeas, a planner for materials, servants, and events, and Laplace, a battle simulator for building teams and working out 3T farming. If you are trying to decide which part of the site to use, the short answer is: use Chaldeas for planning before you spend resources, and Laplace for testing how a team actually performs in a fight.

Chaldeas: the planner

Chaldeas is described as a planner that helps masters plan materials, servants, events, and so on. In practice, this is the part of Chaldea you open when your question is "what do I need, and when do I need it?" rather than "will this team clear the node?"

Typical planning tasks it is meant to cover:

  • Materials — tracking what you still need to farm or collect.
  • Servants — organizing which servants you are raising or intend to raise.
  • Events — planning around event schedules and their associated requirements.

The value here is foresight: you line up requirements ahead of time instead of discovering a shortage mid-event.

Laplace: the battle simulator

Laplace is described as a novel battle simulator. Its stated purposes are:

  • Building your team — testing compositions before committing in-game.
  • 3T farming — helping work out three-turn farming setups.

So Laplace answers a different question than Chaldeas: not "what do I need?" but "does this team work, and how fast?" Because it simulates battles, you can iterate on a team setup without spending in-game AP or resources on trial runs.

How the two fit together

Chaldeas Laplace
Role Planner Battle simulator
Answers What to plan and prepare How a team performs
Covers Materials, servants, events Team building, 3T farming
Use it when Preparing ahead of time Testing a composition

Both are components of the same cross-platform Chaldea tool, so they are complementary rather than alternatives: plan your targets in Chaldeas, then validate the team that will farm them in Laplace.

Practical notes

  • Chaldea is a cross-platform tool, so the same two modules are the ones to look for regardless of where you run it.
  • The site requires JavaScript enabled to run — if you see only a "You need to enable JavaScript to run this app" message, that is the cause, not a missing feature.
  • For setup details and usage instructions, the site points to its Document Site; that is the place to check for specifics beyond the module descriptions above.