Stack AI vs Retool
A detailed comparison to help you choose between Stack AI and Retool.
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Verdict: Retool wins
Retool scores 4.3/5, edging out Stack AI at 3.5/5. Engineering-led teams building internal tools and admin panels on top of real production databases and APIs who want speed without giving up JavaScript escape hatches.
Stack AI Build AI workflows and apps without code | Retool Build internal tools with drag-and-drop | |
|---|---|---|
| Rating | 3.5 (1 review) | 4.3 (1 review) |
| Pricing Model | freemium | freemium |
| Starting Price | Free tier available | Free tier available |
| Best For | Enterprise and IT-led teams building secure internal AI tools and document workflows — particularly those already using Asana — who can run a pilot and negotiate a custom contract. | Engineering-led teams building internal tools and admin panels on top of real production databases and APIs who want speed without giving up JavaScript escape hatches. |
| Free Tier | ||
| API Access | ||
| Team Features | ||
| Open Source | ||
| Tags | free tierno codesso | free tierteam featuresapi access |
| Visit Stack AI → | Visit Retool → |
Stack AI
Pros
- + Model-agnostic node canvas: any LLM behind the graph, with structured JSON outputs validated in-flow in my build
- + Document AI with working citations — outputs pointed at the right source PDFs in my spot checks
- + Enterprise compliance posture: Trust Center, HIPAA BAA path, on-prem deployment and dedicated infrastructure on Custom
- + Genuinely free entry point at 500 runs/month with no card, plus live docs, Academy, changelog and public status page
- + Acquired by Asana (May 2026) — potential distribution and workflow integration upside for teams already in that ecosystem
Cons
- - Acquired by Asana for a reported $75M in May 2026 — roadmap and pricing stability need contractual clarity before multi-year deals
- - No self-serve paid tier: 500 runs/2 projects on Free, then custom-negotiated pricing with nothing published in between
- - Third-party pricing roundups disagree wildly ($49–$199/mo) and are not vendor-confirmed — do not budget from aggregators
- - Denser, less polished UI than consumer-grade builders; overbuilt for simple FAQ-style use cases
- - Free tier (500 runs) is about one serious build-and-debug session — too tight for a real evaluation month
Retool
Pros
- + Prompt-to-app builder produced a working support console skeleton in minutes against a real Postgres schema in my test, with queries correctly bound to named resources
- + Query debugging is first-class: stack traces, run history and dependency inspection made a sluggish page diagnosable in minutes rather than hours
- + Credential isolation is done right — database and API secrets sit in resource config once, and end users of apps never see them
- + Free tier is genuinely usable for evaluation: unlimited apps, 5 users, 500 workflow runs and 20 hours of Agent runtime per month at time of writing
- + Deploys where you need it: Retool Cloud, or self-hosted in your own VPC/behind a VPN (Enterprise tier)
Cons
- - Default query-on-load behavior made my first dashboard sluggish; manual triggers fixed it but this needs to be taught to every new builder
- - Git source control with pull-request review and self-hosting are both Enterprise-only, so small teams doing serious review workflows face a big price jump
- - Per-seat cost compounds at scale: Business is $50 per builder plus $15 per internal user per month (annual), and external portal users start billing past 50 seats
- - Component styling is constrained — teams wanting pixel-perfect branded front-ends will hit the ceiling quickly
- - AI-generated apps needed manual permissions work; the prompt builder does not infer your access model
Frequently Asked Questions
Which is better, Stack AI or Retool?▼
Retool scores higher at 4.3/5 vs 3.5/5 for Stack AI, making it the better-rated option in our comparison.
What is the difference between Stack AI and Retool?▼
Stack AI: Stack AI is a drag-and-drop platform for building AI agents and internal applications, aimed at enterprise deployment and compliance. Retool: Retool is a platform for building internal tools, pairing a drag-and-drop UI builder with code, connections to databases, APIs and LLMs, and cloud or self-hosted deployment.
Is Stack AI or Retool more affordable?▼
Stack AI starts at €0/mo, Retool starts at €0/mo. Check the comparison table above for current pricing.
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