feat(comparison): add Custom Blocks as a comparison-page fact

[waleedlatif1]

Summary

• Added a new "Custom blocks" row to the platform section of every comparison page, covering whether a platform lets a builder publish a deployed workflow as a reusable, encapsulated block for org-wide reuse
• Sourced an accurate answer for Sim and all 20 competitors, distinguishing genuine equivalents from look-alike features (sub-workflow composition, custom code nodes, connector wrappers, template galleries)

Type of Change

• New feature (comparison-page content)

Testing

Tested manually — tsc and biome check pass clean on all touched files; every new claim's citations were fetched and verified live.

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

[vercel]

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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
docs	Skipped		Jul 8, 2026 10:35pm

[cursor]

PR Summary

Low Risk
Static comparison content and type/schema updates only; no product runtime or auth/data-path changes.

Overview
Adds a new Platform comparison dimension, Custom blocks (org-wide reuse), so pages can contrast publishing a deployed workflow as an encapsulated, org-wide toolbar block (hidden internals, curated I/O, live sync to latest deploy) versus adjacent features like sub-workflows, skills, and connector wrappers.

The customBlocks fact is typed in ComparisonFacts, registered in comparison-sections.ts, and filled for Sim (yes, Enterprise / self-hosted flag) and 20 competitors with sourced value / detail / shortValue / confidence entries. Most vendors are rated no; Microsoft Copilot Studio and Vellum are partial where tool/deployment reuse exists but not a governed org-wide block palette.

^{Reviewed by Cursor Bugbot for commit 5b721a8. Configure here.}

[greptile-apps]

Greptile Summary

This PR adds Custom Blocks as a comparison-page fact. The main changes are:

• A new platform row for Custom blocks.
• A required customBlocks fact in the comparison data type.
• Sourced Custom Blocks entries for Sim and each competitor.

Confidence Score: 5/5

This looks safe to merge.

• No blocking issues found in the changed code.

Important Files Changed

Filename	Overview
apps/sim/app/(landing)/comparison/comparison-sections.ts	Adds the Custom blocks row to the platform comparison section.
apps/sim/lib/compare/data/types.ts	Adds customBlocks as a required platform fact.
apps/sim/lib/compare/data/sim.ts	Adds Sim's sourced Custom Blocks comparison fact.
apps/sim/lib/compare/data/competitors/*.ts	Adds sourced Custom Blocks facts for competitor profiles.

_{Reviews (1): Last reviewed commit: "feat(comparison): add Custom Blocks as a..." | Re-trigger Greptile}