Retool vs Superblocks: seats, end users, AI generation and MCP compared

Retool vs Superblocks comes up when a team has outgrown "one engineer builds the admin panel" and wants a platform with governance behind it. Both have an AI builder and an MCP server. The real differences are how they meter, what the Enterprise line hides, and how much of the building an agent does for you.

This is neutral through the verdict. The Gigacatalyst section at the end only covers customer-facing apps.

What each one is

Retool is a low-code builder for internal tools, and since 2023 also customer, vendor and partner portals and embedded apps, aimed at engineering and ops teams.

Superblocks is an enterprise low-code and AI app platform: Clark, an AI agent that generates apps from natural language, plus a visual builder, for governed internal tools on company data. It is aimed at IT, platform and business teams inside larger companies.

Pricing

Prices as of September 2026, from https://retool.com/pricing and https://www.superblocks.com/pricing.

Retool meters three seat types. Builders edit apps, internal users use them, and external users are a tiered third type on Business and Enterprise only. Free is up to 5 users. Team is $10 per builder and $5 per internal user per month on annual billing ($12 and $7 monthly). Business is $50 per builder and $15 per internal user ($65 and $18 monthly). External users on Business: first 50 free, 51 to 250 at $8 annual or $10 monthly, 251 to 500 at $6 or $7, 500+ at $4 or $5. Enterprise is custom and required for unlimited users, SSO and advanced self-host. Agents bill separately at hourly rates.

Superblocks has two plans. Teams is $125 per month billed monthly, $100 per month billed annually. It includes up to 15 builders, "unlimited end users," 1 hosted app per team with "$10/app/mo for additional apps," 100 Governed Agent Units (GAUs) per month for Clark with GAU packs as an add-on, and a 14-day free trial. Enterprise is custom and adds Hybrid or Cloud-Prem VPC deployment, SSO/SAML/OIDC, audit logs, observability pipelines, source control, embedded apps, Admin MCP and a dedicated account team. There is no free tier.

The shape matters more than the numbers. Retool bills per head in every direction. Superblocks bills a flat team fee, does not charge end users, and meters hosted apps and AI usage instead. Ten builders and 200 internal users on Retool Business annual is 10 x $50 + 200 x $15 = $3,500 per month. The same team on Superblocks Teams is $125 per month plus $10 for each hosted app beyond the first, so 8 apps is $195. That gap is real, and it is why Superblocks leads with "unlimited end users."

Then the Enterprise line. On Superblocks, embeds, SSO, audit logs and Git are all custom-priced. If you need any one of those, the $125 number is not your number.

Self-hosting

Retool offers real self-hosting: Docker for testing, Kubernetes with Helm for production, or Retool-managed single-tenant on your AWS. Free, Team and Business self-host at cloud prices with feature restrictions. Git Source Control is Enterprise only.

Superblocks does not offer full self-hosting. Hybrid keeps the control plane in Superblocks cloud and runs a data plane in your VPC on AWS, GCP, Azure, Kubernetes or a VM. That is Enterprise only. SelectHub reviewers note on-prem setup "can be lengthy." Retool is the only one of the two that runs fully inside your boundary.

Customer-facing: embeds, SSO, audit

Retool: Portals (hosted, custom domain, themed login and invite pages) on Business and Enterprise. Embed via React and JavaScript SDKs on all plans, but Retool API authentication for embeds needs Business or Enterprise. SAML SSO for external users; multiple SSO connections need Spaces or multi-instance self-hosting. Audit logs download as CSV on Business and Enterprise; Datadog and Splunk streaming is Enterprise. Docs describe no built-in row-level policies; scoping lives in queries.

Superblocks: React and JavaScript embed SDKs with three modes, Public, Private (Superblocks login) and SSO via JWT session tokens minted from a public token endpoint. Embed users "do not need Superblocks accounts" and attach to Groups for the session, marketed as "white-labeled." All of it is Enterprise only. Audit logs cover builder, end-user and admin events and are also exposed through the MCP server, Enterprise only. Row-level permissions are not published as a native feature; access maps to groups and JWT claims.

So the customer-facing story on Superblocks is technically cleaner (JWT sessions, no accounts for embed users) but has no published price. A competitor's comparison summarized it as "We'll need an enterprise license for SSO, embeds, custom branding, or external users." Retool at least publishes the external-user tiers.

AI generation: Clark vs Retool Assist

This is Superblocks' strongest pitch. Clark generates apps from natural language with Plan and Build modes and checkpoints. It can import Replit, Lovable, v0 or Claude projects as a zip and rewrite auth and secrets to platform features. Superblocks' governance story is built around this: central credentials, RBAC and audit for AI-built apps. They cite Virgin Voyages shipping "8 production apps" from "10 semi-technical builders."

Retool Assist generates and edits classic apps from prompts, free "for a limited time," classic apps only. Retool Agents run processes with LLM steps and can call external MCP servers. AI credits renew monthly and do not roll over.

If the goal is "business users describe an app and a governed version appears," Superblocks is further along. If the goal is an AI helper inside a builder engineers already use, Retool Assist is adequate and cheaper to try.

MCP servers

Both have one.

Retool's MCP server has been in public beta since 2026-05-08 at your instance's /mcp path with OAuth 2.0, for cloud and self-hosted, and manages apps, workflows and users from Claude, Cursor, Codex, ChatGPT and Kiro.

Superblocks has two. Admin MCP at app.superblocks.com/mcp (bearer token) or via npx @superblocksteam/mcp-server for Cursor, Claude Code and Windsurf, Enterprise only. Builder MCP lets Claude build and publish apps, with Slack, ChatGPT and Teams "soon."

Retool's is available across plans in beta. Superblocks' admin surface is Enterprise gated. The broader field of builders with MCP servers is at /best/ai-app-builders-with-mcp-server.

Reviews

Retool: G2 4.6 from about 358 reviews, Capterra 4.5 from 34. Praise: "one of the most flexible low-code platforms." Complaints: editor "can start lagging when apps grow larger," "per-seat pricing frustrates teams as they grow," SSO gated behind higher tiers.

Superblocks: G2 about 4.7 from 190+ reviews, ease of use 9.2 with 84 mentions, fast high-touch support with 43 mentions. Top dislikes: "missing features" (44 mentions), "limited features" (28), components not reusable across apps, complex cases need JavaScript or Python. SelectHub: 94% satisfaction across 199 reviews, but "built-in options for creating graph-based data visualizations are somewhat restricted." Capterra, GetApp and Software Advice list 0 reviews.

Side by side

	Retool	Superblocks
Paid entry	$10 builder, $5 internal user (Team, annual)	$125/month Teams, 15 builders
End users	Metered, internal and external seats	Unlimited, not charged
External users	Tiered $8 to $4 after 50 free, Business+	Embeds Enterprise only, not published
Free tier	Yes, 5 users	No, 14-day trial
Full self-host	Yes	No, Hybrid data plane on Enterprise
SSO	Enterprise (external SSO)	Enterprise
Git	Enterprise	Enterprise
Audit logs	Business+ CSV, Enterprise streaming	Enterprise
AI builder	Assist, classic apps	Clark, Plan and Build, imports
MCP	Yes, public beta, all plans	Admin MCP Enterprise, Builder MCP
G2	4.6, about 358 reviews	About 4.7, 190+ reviews

Prices as of September 2026.

Verdict by situation

Pick Superblocks if you are a mid-size or large company with an Enterprise budget, you want semi-technical staff generating governed apps with Clark, and unlimited internal end users at a flat team price is what unblocks you. The support and ease-of-use scores back that up.

Pick Retool if you want a free tier, need to self-host the whole stack, want the widest connector set with a bundled database, or want an MCP server without an Enterprise contract. It is also the pick for a partner portal with a known price up front.

Pick neither on published pricing if the users are thousands of paying customers who each need to see only their own data. Both push embeds and SSO to Enterprise, and neither has native row-level policies. /alternatives/retool covers the rest of the field, and /vs/retool-vs-appsmith compares Retool with the open source option.

Where Gigacatalyst fits

One case only: a B2B SaaS team shipping dashboards, reports or configured apps to its own customers.

Superblocks' "end users are free" and Retool's tiered external seats are both answers to the wrong question for that team. The question is not how much a customer login costs. It is whether the thing the customer sees is the product or a copy of the product. A solutions leader who ran presales at Enable put it this way: "it wouldn't do me much good to be able to show a customer this dashboard, but then they don't have it when they go live."

Gigacatalyst builds the dashboard or app on your product's own APIs and permissions. It calls only approved endpoints, so it cannot show data or features that are not there, which is the boundary a product leader at Klue asked for: "a permission system where the capabilities would be predefined and then the app builder can only operate within those bounds." The customer is already your user, so there is no separate seat. Pricing as of September 2026 is quoted per deployment with a pilot.

Honest limits: it is not an internal tool builder. It is a young company and sits in your data path, so plan a security review (what we do is at /trust). Presales teams who want per-prospect POCs on the real product should look at /for-solutions. The longer Retool review is at /reviews/retool, and /contact is where we run one of your real customer requests on your APIs.

Questions people ask

Is Superblocks cheaper than Retool? For internal tools with many users, usually yes. As of September 2026 Superblocks Teams is $125 per month with unlimited end users and 15 builders, while Retool bills every builder and user. Once you need SSO, embeds or Git, Superblocks is Enterprise with custom pricing.

Does Superblocks charge for end users? No. Both Teams and Enterprise include unlimited end users. Embedded apps for external customers are Enterprise only, so the customer-facing price is not published.

Can I self-host Superblocks? Not fully. Hybrid keeps the control plane in Superblocks cloud and runs a data plane in your VPC, Enterprise only. Retool offers full self-hosting via Docker or Kubernetes at cloud prices.

Which has the better AI app builder? Superblocks' Clark generates apps from natural language with Plan and Build modes and imports Lovable, v0, Replit and Claude projects. Retool Assist generates and edits classic apps from prompts. Clark is the more complete generation story.

Do both have MCP servers? Yes. Retool's is in public beta on all plans with OAuth 2.0. Superblocks has an Admin MCP (Enterprise only) and a Builder MCP for Claude.

Where does Gigacatalyst fit? Only for customer-facing apps in a B2B SaaS product. It runs the app on the product's own APIs and permissions, priced per deployment as of September 2026. For internal tools, use Retool or Superblocks.