No-code chatbot builder · comparison
MySiteGPT vs Stack AI
Updated
MySiteGPT is a Stack AI alternative that answers your website visitors only from your own content, cites a source for every claim, and says so when it doesn't know. You can start on the Free plan (every feature, 1 chatbot, 100 messages a month, no card), and Pro is $19.99/mo with OpenAI included.
What Stack AI is
A no-code platform for building custom LLM apps, agents, and workflows, aimed at enterprise and technical ops teams.
Stack AI is a no-code builder for LLM apps, agents, and automations. You assemble nodes on a canvas, wire in data sources and integrations, and ship internal tools or customer-facing assistants — a flexible platform aimed at enterprise and technical ops teams, with governance, compliance, and seat-based contracts to match. It can do far more than a chat widget, and that breadth is the point.
If you're after a Stack AI alternative because you only need a smart, trustworthy chat widget on your site, MySiteGPT skips the canvas entirely. There's nothing to build or orchestrate: you point it at your URL, docs, or files, and it ships a streaming widget that answers strictly from your content with citations visitors can open — for a flat $19.99/mo instead of an enterprise quote. Less power, far less setup.
| Feature | MySiteGPT | Stack AI |
|---|---|---|
| What it is | A single-purpose RAG chat widget: train on your content, embed with one script tag, done. | A general no-code builder for LLM apps, agents, and workflows you assemble yourself. |
| Setup time | Crawl a URL or upload files, paste one async script before </body>, live in minutes. | More capable but more to build — designing, wiring, and testing a flow takes real work. |
| Cited answers | Every factual claim carries a [n] marker; visitors open a source card to verify the exact page. | You can build citations into a flow, but visitor-facing source cards aren't a default promise. |
| When it doesn't know | On low retrieval confidence it returns your fallback message, never the open web, and logs the miss. | Grounding and guardrails are yours to configure per workflow; depends how you build it. |
| Pricing | Free plan with every feature (1 bot, 100 messages/mo, 1,000 pages, no card). Pro is $19.99/mo: OpenAI included and managed, 3 bots, 3,000 messages/mo, 1,000 pages, no branding. | Historically a paid Pro tier (around $199/mo) plus enterprise quotes; confirm current plans on their site. |
| Breadth & integrations | Website widget plus REST API and lead.created webhooks to Slack/Zapier/Make/n8n — deliberately narrow. | Wide integration catalog, agents, and automation across many data sources and tools. |
| Enterprise & governance | Lean SaaS: API keys, webhooks, data kept after the trial (account drops to Free, nothing deleted) — no SSO/RBAC/compliance program. | Built for enterprise: governance, RBAC/SSO, and compliance certifications (verify current scope). |
Pricing compared in good faith from public materials as of June 2026 and may have changed — Stack AI has shifted toward enterprise/custom contracts, so confirm current plans and any published tiers on stack-ai.com before deciding.
Why SaaS builders choose MySiteGPT over Stack AI
- Point it at your docs, changelog, and API reference; auto-sync re-crawls daily at a time you choose so answers track each release without you rebuilding anything.
- Deflect repetitive product and pricing questions on the marketing site so a small support team scales — no flow to maintain as the product changes.
- Cited answers plus an honest fallback build trust with technical buyers who won't take an uncited chatbot's word for anything.
- OpenAI is included and managed with nothing to configure, and a Free plan plus the flat $19.99/mo Pro price fit a bootstrapped budget better than seat-and-credit enterprise contracts.
When Stack AI is the better pick
If you need to build more than a website Q&A widget — multi-step agents, internal tools that hit several data sources, automations across your stack, or a customer assistant with custom logic — Stack AI is in a different weight class and the better fit. It's also the safer pick when enterprise procurement demands SSO, RBAC, audit controls, and compliance certifications, which a small, website-focused tool like MySiteGPT deliberately doesn't try to offer.
MySiteGPT vs Stack AI: frequently asked questions
Is MySiteGPT a good Stack AI alternative for SaaS?
Yes, if your actual need is a cited chat widget on your website rather than a platform to build LLM apps and agents. MySiteGPT trains on your URL, docs, and files, answers strictly from that content with citations visitors can open, falls back honestly when it isn't sure, and embeds with one script tag. If you instead need custom agents, multi-source automations, or internal tooling, Stack AI's builder is the better match.
How does MySiteGPT pricing compare to Stack AI?
MySiteGPT has a Free plan with every feature (1 bot, 100 messages a month, no card); Pro is $19.99/mo with OpenAI included and managed, and new accounts get a 14-day Pro trial with no credit card. It's all self-serve. Stack AI has historically used a paid Pro tier (around $199/mo) and enterprise quotes, and has leaned increasingly enterprise/seat-based — so confirm current numbers on stack-ai.com, but expect a different pricing model aimed at larger teams.
Do I have to build a workflow or flow in MySiteGPT?
No. There's no canvas, no nodes, and no flow to design — that's a deliberate trade-off versus a builder like Stack AI. You add content (crawl, paste, Q&A, or file upload), and retrieval-grounded answering works out of the box. You configure the welcome message, brand color, starter questions, and fallback, then embed.
Can MySiteGPT build agents or automations like Stack AI?
Not in the same sense. MySiteGPT is a website assistant, not an agent platform — it answers from your content and captures leads. It does expose a REST API and posts a lead.created webhook to Slack, Zapier, Make, or n8n, so you can wire it into automations downstream, but it doesn't orchestrate multi-step agents or connect many data sources the way Stack AI's builder does.
Is MySiteGPT enterprise-ready with SSO and compliance?
It's intentionally a lean SaaS product, so it doesn't ship SSO, RBAC, or a formal compliance program. It uses SHA-256-hashed API keys and keeps your data when a trial ends — the account drops to the Free plan and nothing is deleted. If your buyers require certifications and enterprise governance, Stack AI (or a similar enterprise platform) is the more appropriate choice — verify their current compliance scope on their site.
Before you switch from Stack AI
Start free and see the cited answers yourself
Free plan: every feature, 1 chatbot and 100 messages every 30 days, OpenAI included. No card, no time limit. The chat bubble on this page is the product, trained on our own site, so you can ask it anything first.