BrainGrid is a plan-first AI app builder that writes specs, verifies features, and hosts apps live. Plans start at $29/month per seat. No free trial.
Researched and fact-checked by Bartu Cavusoglu · Updated October 26, 2026
BrainGrid is an AI app builder that writes a specification before it writes any code. A user describes what they want, the Planning Agent asks clarifying questions, and the platform produces acceptance criteria, a data model, and a readiness score. Nothing is built until the plan is ready and the user approves it.
The company positions this as the opposite of tools that jump straight to code and leave users fixing a broken app. BrainGrid builds after sign-off, verifies each requirement with attached evidence, and runs the result live on BrainGrid Cloud. The site says users end up owning a running product rather than a fragile prototype.
BrainGrid runs a four-step loop: plan, build, verify, and live. In the plan step, the Planning Agent turns a description into a spec. In the build step, the Builder Agent runs Claude Code in a cloud sandbox against that spec, with a live preview, and can finish a change while the user is away.
Developers can build on their own computer instead. The spec is pulled into Claude Code, Cursor, or Codex over MCP or CLI, keeping the user's repo and environment. In both modes, each acceptance criterion is checked, evidence is attached, and every later change runs the loop again.
The planning features include clarifying questions, acceptance criteria, a data model, and a readiness score. Verification attaches evidence to every criterion, such as test runs, screenshots, and flow recordings. The site's examples include a magic-link sign-in flow recorded in 12 seconds and a rejected 27 MB upload.
On the delivery side, BrainGrid Cloud handles hosting, sign-in, data, and email, and gives each product its own URL. Teams can collaborate on plans and specs on higher tiers. The site also lists project types such as SaaS products, internal tools, AI-powered apps with model access and budgets, and marketing sites.
BrainGrid is an AI app builder that plans before it builds. It writes a spec with clarifying questions, acceptance criteria, and a data model, then builds the app after sign-off. It verifies each criterion with evidence and runs the app live.
Pricing is per seat. Builder is $29 per month, Builder Pro is $99 per month, and Team is $199 per month. Yearly billing is $290, $990, and $1,990 per seat respectively, which gives two months free.
No. The site states there is no free trial, and a paid plan must be chosen and paid for before anything is provisioned. Plans can be changed or canceled anytime.
BrainGrid works with Claude Code, Cursor, and Codex. The spec is pulled into these agents over MCP or CLI, so users can build in their own repo. In BrainGrid Cloud, Claude Code runs in a cloud sandbox.
The company says other AI tools jump straight to code and leave users fixing a broken app. BrainGrid writes the spec first, gets sign-off, and then verifies each acceptance criterion with attached evidence.
The site targets people with ideas for SaaS products, internal tools, AI apps, and marketing sites, including those who cannot code. Developers can also use it to plan and verify features in their own repo.
Yes. Builder Pro supports unlimited users and collaboration on plans and specs. Team adds unlimited projects, single sign-on, and priority support. The Builder plan is limited to 1 user.
The app goes live on BrainGrid Cloud, where hosting, sign-in, data, and email are handled. It gets its own URL, and every later change runs the plan, build, and verify loop again.