G
GAlhena AI vs Synthflow
Pricing, features, platforms and who each one suits — side by side.
A
Choose Alhena AI if…
- you want a free plan to start with
- you're in its core audience: e-commerce brands, customer support 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 Alhena AI Synthflow
Pricing modelFreemiumContact for pricing
Starting price$199/mo—
Free plan
Free trial
API
Open source
AI voice/phone agent—
Human handoff—
AI takes actions—
Shopify/ecommerce data—
Live translation—
PlatformsWebWeb, API
CategoryCustomer SupportVoice Agents
CompanyHelix3 Labs, Inc. · United StatesSynthflow AI
Full feature lists
A
- Conversational product discovery with bundle and add-on suggestions
- Order cancellations, returns and appointment booking by AI agents
- Phone and SIP-line ready voice AI
- Support in 90+ languages
- Escalation to human agents with full context
- SKU-level tracking of products recommended by AI engines
- Revenue attribution and AI vs. human performance analytics
- Engagement across social comments, DMs and review platforms
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.
Alhena AI · alhena.ai
Synthflow · synthflow.aiWhat you'd pay
The cheapest plan that fits, per month, billed yearly where the plan offers it.
What the free plans include
Alhena AI
- 25 conversations/mo
- 500 custom URLs / SKUs
- 1 AI profile
- Manual training frequency; AI-only support
Synthflow
No free plan.
All plans and prices
Alhena AI
Free$0
Essentials$199/mo billed annually
Growth$499/mo billed annually
Scale$999/mo billed annually
EnterpriseCustom
Synthflow
EnterpriseCustom
Strengths and limitations
Alhena AI
- Free plan includes 25 conversations a month with no credit card
- 14-day trial on Essentials, Growth and Scale
- 200+ integrations stated, including Shopify, Zendesk and Salesforce
- Spam, irrelevant queries and immediate human handoffs do not use conversation credits
- Listed paid plan prices require annual billing, charged upfront
- Credits reset each cycle and do not roll over
- Trial requires a payment method or Shopify billing approval, and billing starts automatically when it ends
- Security certifications are not named on the home page
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
More comparisons
Other options to consider
GG
From $10/mo
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
S
SS
From $750/mo
R
RR
From $12/mo
T
TT
From $24.17/mo
T
AI customer service and live chat that answers questions and drives store sales
Customer SupportAPI
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
Facts from each vendor's public pages, prices checked Oct 31, 2026. Editorial policy