G
GSiena AI vs Vapi
Pricing, features, platforms and who each one suits — side by side.
S
Choose Siena AI if…
- you work on Slack
- you're in its core audience: consumer brands, e-commerce customer experience teams
V
Choose Vapi if…
- you want a free plan to start with
- you want the lower entry price ($29/mo vs $750/mo)
- you need an API to build on
- you're in its core audience: developers, customer support teams
Side by side
Feature Siena AI Vapi
Pricing modelPaidFreemium
Starting price$750/mo$29/mo
Free plan
Free trial
API
Open source
Trains AI on your content—Yes
Data retention—Depends on customer config; free plan 14 days raw data; deleted on request
Security and complianceSOC 2 Type II, GDPRSOC 2, HIPAA, PCI DSS
Human handoff—
AI takes actions—
Shopify/ecommerce data—
PlatformsWeb, SlackWeb, API
CategoryCustomer SupportAI Agents
CompanySiena Labs, Inc.Vapi Inc.
Based inUnited StatesUnited States
Founded——
Part of——
Key features
S Siena AI
- Automated order updates, return labels, refunds and replacements
- Subscription skip, pause and swap handling with upsell suggestions
- Shopping Agent for product recommendations
- Social Agent for product questions and community moderation
- Copilot for drafting on-brand replies and translations
- AI Personas, guardrails and granular policy controls
- Collaborative AI Routing that explains each handoff
- Siena Docs knowledge base with a branded public help center
V Vapi
- Configurable voice, conversation flow and telephony
- Call testing and simulation before going live
- Real-time call monitoring and observability
- Built-in AI conversation guardrails
- Twilio, Vonage, Telnyx and Vapi SIP telephony
- Model providers passed through at cost
- SSO, OAuth and RBAC access controls
- SOC 2, HIPAA and PCI compliance
Plans and prices
From each vendor's site. Prices change — confirm before buying.
Siena AI
Platform fee$750/month
Automation Pack$0.90 per ticket automated
Support & ImplementationPricing on request
Vapi
No Success Package$0 to start, $0.05/min hosting
Core$29
Pro10% of Vapi hosting fee, $999/mo minimum
PremierCustom
Strengths and limitations
Siena AI
- Integrates with six named helpdesks, including Zendesk, Gorgias and Intercom
- Published pricing: $750/month platform fee plus $0.90 per automated ticket
- Siena Docs is included in the plan at no extra cost
- Platform fee includes an unlimited sandbox
- No free plan or free trial is mentioned on the pricing page
- Support and implementation pricing is not published and must be requested
- Per-ticket charges come on top of the $750 monthly platform fee
- No mobile app is listed
Vapi
- $5 free credits and no minimum minutes to start
- Model provider costs passed through with no markup
- Unlimited agents on every plan
- SOC 2, HIPAA and PCI compliance
- The hosting fee and provider costs add up; the page estimates $82–$129 for 1,000 minutes
- HIPAA compliance is a $2,000/month add-on
- The free tier has no support SLA and allows only 4 concurrent calls
- Pro requires a $999/month minimum
More comparisons
Other options to consider
GG
From $10/mo
R
RR
From $12/mo
A
AAI shopping assistants, support agents and voice AI for e-commerce brands
Free, from $199/mo
A
Free, from $199/mo
A
AI shopping assistants, support agents and voice AI for e-commerce brands
Customer SupportFree plan
Y
YAI agents that resolve ecommerce support tickets, pre-sale questions and social DMs
From $1200/mo
Y
From $1200/mo
Y
AI agents that resolve ecommerce support tickets, pre-sale questions and social DMs
Customer Support
I
IAI customer agent that resolves support, sales and ecommerce conversations
From $49.50/mo
I
From $49.50/mo
I
AI customer agent that resolves support, sales and ecommerce conversations
Customer SupportAPI
Z
ZZ
Free trial
Built from each vendor's public website; we haven't tested them hands-on. Editorial policy