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Stack AI logo

Stack AI Pricing

stack-ai.com · Chatbots · refreshed 2026-05-06
Chatbots
Free tier
Self-serve checkout
4 tiers
Public API
Quick answer

Stack AI offers a free tier; paid plans contact sales. 2 tiers total including a free tier.

Page fetched 2026-05-09 · stack-ai.com · Tier-based subscription
Stack AI pricing page screenshot — https://www.stack-ai.com/pricing
Source · live pricing page on 2026-05-06

www.stack-ai.com/pricing

Open
Pricing
Stack AI pricing
As of 2026-05-09 · www.stack-ai.com/pricing
Free
Free
Community support on Discord
500 runs per month
1 Seat
Enterprise
Sales
Contact sales
Custom number of runs
Unlimited projects
Custom number of seats
Dedicated infrastructure
Dedicated solution engineers
Open live pricing pageSee agent-readiness analysis
Frequently asked
Stack AI pricing FAQ

Stack AI pricing starts at $0/mo for the Free plan; paid plans are custom. Billed monthly.

Yes — Stack AI publishes a free tier. 500 runs per month.

Yes — Stack AI's purchase motion is self-serve.

xpay scored Stack AI as human-assisted: some plans are self-serve, others require sales contact. Stack AI publishes a pricing page with 4 discoverable plan tier(s). No per-unit price was found on the page; an agent has no direct way to estimate the cost of a single task. Self-serve signup exists alongside a sales-led / custom tier. Public API documentation is reachable without an auth wall. A free or freemium tier is offered. For the full purchase simulation see the linked Agent-Ready Index scorecard.

In the Chatbots category, xpay's Agent-Ready Index lists alternatives ranked by their ability to support AI agent purchase. Visit the agent-readiness scorecard for Stack AI to compare with 3 nearest peers.

Alternatives in Chatbots
Top Stack AI alternatives by pricing transparency
AiSensy pricing
aisensy.com
Robofy pricing
robofy.ai
Fineguide pricing
fineguide.ai
WorkHub pricing
workhub.ai
Chatbase pricing
chatbase.co
Inworld pricing
inworld.ai
CustomGPT pricing
customgpt.ai
GPT-trainer pricing
gpt-trainer.com
Browse all Chatbots alternatives →
AI agent readiness
Can an AI agent buy from Stack AI?
Partially Agent-Ready

53

/ 100 in xpay's Agent-Ready SaaS Index

Stack AI scores 53/100 on xpay's Agent-Ready Index v2: partial pricing visibility; checkout requires assistance; a public API exists with documentation; a free entry path exists.

See the full scorecardIncludes the 6-step agent purchase simulation, score breakdown across 7 dimensions, and the one-line fix that would lift Stack AI into the Agent-Ready Verified band.
Quick facts
At a glance
Free access

500 runs per month

Billing cycle

Monthly

Lowest paid

Sales-led

Self-serve checkout

No

Tier count

2

Pricing model

Tier-based subscription

More Chatbots alternatives
Most agent-ready

Mendable

mendable.ai
79

MindPal

mindpal.space
78

DocuChat

docuchat.io
78

ChatAndBot

chatandbot.com
78

Robin

robinapp.co
78
Stack AI pricing summary derived from a live read of https://www.stack-ai.com/pricing on 2026-05-06. For the agent-readiness assessment — including the 6-step purchase simulation and a per-dimension scorecard — see xpay's Agent-Ready SaaS Index entry for Stack AI.

Explore SaaS pricing across categories

25,480+ SaaS scored on agent-buyability — browse by readiness band, category, or jump straight to a pay-per-run tool on xpay.tools.

Browse by category
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Available pay-per-run on xpay.tools
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The agent-readiness stack for the AI shopping era — helping merchants, publishers and SaaS companies get discovered, cited and transacted with by ChatGPT, Perplexity, Claude, Gemini and the custom shopping agents underneath them.

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