Website AI chatbot · comparison
MySiteGPT vs ChatFast
Updated
The short version
A GPT chatbot you train on PDFs, websites, and Q&A to answer from your data and collect leads, with low-cost tiers.
ChatFast and MySiteGPT start from the same idea: feed it your PDFs and website, get a chatbot that answers from your data and captures leads. ChatFast has historically leaned into accessible pricing, custom forms the bot can trigger mid-chat, and CRM hand-offs, which makes it a sensible pick if lead generation is the headline goal.
If you're weighing a ChatFast alternative, MySiteGPT optimizes for proof over breadth. Every factual answer carries a [n] citation visitors can open to see the exact source page, and when retrieval confidence is low it returns your honest fallback instead of guessing. For SaaS founders putting an assistant on top of docs and an API reference, "never confidently wrong" matters more than another integration, and a flat $9.99/mo Pro plan with managed OpenAI included keeps costs predictable with no per-message metering.
| Feature | MySiteGPT | ChatFast |
|---|---|---|
| Cited answers | Every factual claim carries a [n] marker tied to the exact source page or document; visitors open a source card to verify. | Answers from your uploaded data, but visitor-facing per-claim citations historically aren't the headline feature — check their site. |
| When it doesn't know | Answers strictly from your content, never the open web; low-confidence retrieval returns your fallback message and logs the miss as an unanswered question. | Also grounds replies in your data; exact fallback and confidence behavior varies by configuration — verify on chatfast.io. |
| Lead capture | Collects an email after a helpful reply (skippable), emails you the transcript instantly, and fires a per-bot lead.created webhook to Slack/Zapier/Make/n8n. | A genuine strength: AI-triggered custom forms and CRM integrations aimed squarely at lead generation. |
| Pricing | Flat $9.99/mo Pro plan with managed OpenAI included; 14-day trial, no credit card. | Historically low-cost tiers with a free plan; confirm current limits on chatfast.io. |
| Setup time | Crawl a URL, paste text, add Q&A, or upload files; embed with one async script tag in an isolated Shadow DOM. | Similar quick onboarding from PDFs, websites, and text — both are self-serve in minutes. |
| Content sync | Auto re-crawl daily at a time you choose keeps the bot current as your site changes. | Re-training cadence and automatic sync schedule aren't clearly published — check their current docs. |
| Languages | Replies in 50+ languages automatically. | Advertises 95+ languages, historically a wider stated count. |
Pricing and features compared in good faith from public materials as of June 2026 and may have changed — confirm current ChatFast plans, limits, and capabilities on chatfast.io before deciding.
Why SaaS builders choose MySiteGPT over ChatFast
- Point it at your docs, changelog, and API reference; auto-sync re-crawls so answers track every release without you re-uploading PDFs.
- Cited answers plus an honest fallback let technical buyers trust the bot on limits and endpoints — it says 'I don't know' instead of inventing a parameter.
- The flat $9.99/mo Pro plan bundles managed OpenAI, 3 bots, 3,000 messages, and 1,000 trained pages with no per-message metering, so cost doesn't move with traffic.
- Per-bot lead.created webhooks pipe captured emails straight into Slack, Zapier, or your CRM, fitting a dev pipeline rather than a closed forms feature.
When ChatFast is the better pick
If lead generation is the whole point and you want the bot to pop interactive, AI-triggered custom forms mid-conversation and push contacts into a specific CRM out of the box, ChatFast has historically built directly around that workflow and a free entry tier. If you need the widest language coverage on day one or a no-cost starting plan more than you need visitor-facing citations, it's a reasonable choice — confirm current capabilities on chatfast.io.
MySiteGPT vs ChatFast: frequently asked questions
Is MySiteGPT a good ChatFast alternative for SaaS?
Yes, if your priority is trust over breadth. MySiteGPT answers strictly from your content with [n] citations visitors can open, returns an honest fallback when it's unsure, and runs on managed OpenAI at a flat $9.99/mo. For a SaaS assistant sitting on docs and an API reference, that 'never confidently wrong' behavior is the main reason builders switch.
How does MySiteGPT pricing compare to ChatFast?
MySiteGPT is a flat $9.99/mo Pro plan (3,000 messages, 3 bots, 1,000 pages, managed OpenAI included), with a 14-day no-credit-card trial. ChatFast has historically offered low-cost tiers and a free plan; the structures differ, so confirm current ChatFast plans and limits on chatfast.io.
Does ChatFast show source citations like MySiteGPT?
MySiteGPT's core promise is a [n] marker on every factual claim tied to the exact source page, with a card visitors can open to verify. ChatFast grounds answers in your uploaded data, but visitor-facing per-claim citations historically aren't its headline feature — check chatfast.io for what their widget surfaces today.
Do I need an OpenAI API key with MySiteGPT?
No — OpenAI is included and managed on the flat $9.99/mo Pro plan, so there's nothing to configure; the retrieval embeddings are included too. ChatFast also runs on managed GPT models, so neither tool asks you to bring a key as of June 2026.
Is MySiteGPT multichannel like a full support platform?
No. MySiteGPT is deliberately website-first: a cited chat widget you embed with one script tag, plus a REST API and webhooks. It has no native Slack/WhatsApp/Messenger agents. If you need many channels or a ticketing inbox, neither tool is a contact-center suite — pick based on whether citations or breadth matter more to you.
See the cited answers for yourself
The chat bubble on our homepage is the product, trained on our own site — ask it anything and watch every claim link back to its source.