Y
YAI agents that resolve ecommerce support tickets, pre-sale questions and social DMs
From $1200/mo
Siena AI vs Synthflow
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
S
Choose Synthflow if…
- you need an API to build on
- you're in its core audience: contact centers, bpos
Side by side
Feature Siena AI Synthflow
Pricing modelPaidContact for pricing
Starting price$750/mo—
Free plan
Free trial
API
Open source
Security and complianceSOC 2 Type II, GDPR—
Human handoff—
AI takes actions—
Shopify/ecommerce data—
Live translation—
PlatformsWeb, SlackWeb, API
CategoryCustomer SupportVoice Agents
CompanySiena Labs, Inc. · United StatesSynthflow AI
Full feature lists
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
S Synthflow
- Inbound and outbound AI phone agents
- Response time under half a second, with interruption handling
- Language switching during a call
- Warm handoff to human agents with full transcript
- Appointment booking, voicemail detection and SMS follow-ups
- 200+ integrations including Salesforce, HubSpot, Zendesk
- Pre-launch testing and staged rollout with approval
- US, EU and Latin America hosting regions
Their home pages
What each vendor shows first: the pitch, the plans and the sign-up.
Siena AI · siena.cx
Synthflow · synthflow.aiWhat you'd pay
The cheapest plan that fits, per month, billed yearly where the plan offers it.
Siena AI
Platform fee$750/month
Automation Pack$0.90 per ticket automated
Support & ImplementationPricing on request
Synthflow
EnterpriseCustom
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
Synthflow
- SOC 2 Type II, ISO 27001, PCI DSS and HIPAA BAA compliance
- Works with major phone systems and SIP trunks
- White-label deployment with per-client workspaces
- Retention controls can delete recordings and transcripts after 30 days
- No free plan or trial
- Sold only as an annual enterprise agreement
- No published prices or per-minute rate
- SMS and WhatsApp limited to US workspaces
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Y
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Facts from each vendor's public pages, prices checked Oct 31, 2026. Editorial policy