Ruby vs Synthflow AI
Ruby starts $2385/mo cheaper than Synthflow AI.
Both pages checked by August 19, 2026
- RubyHuman agents
- $115/mo
- Bundled chat add-on — 10 chats plan
- Ruby is a US-based live virtual receptionist and website chat service for small businesses, sold in monthly buckets of receptionist minutes and chats, where AI is used only to assist its human receptionists rather than to answer calls.
- Synthflow AIAI only
- $2500/mo
- Enterprise plan
- Enterprise voice AI platform with in-house telephony for automating inbound and outbound calls, sold through sales-scoped contracts rather than published self-serve plans, with the agent designed, tested and launched by the customer in Synthflow's Flow Designer or Prompt Builder.
The differences that matter
- Ruby is human agents; Synthflow AI is ai only. That is the real decision here, not the price.
- Ruby can put a human on the line; Synthflow AI is bot-only.
Feature by feature
| Capability | Ruby | Synthflow AI |
|---|---|---|
| Live transfer | Yes | Yes |
| Books appointments | Yes | Yes |
| Text follow-up | Yes | Yes |
| Outbound calls | Yes | Yes |
| Spanish | Yes | Yes |
| Human backup | Yes | No |
| Call recordings | unstated | Yes |
| Transcripts | Yes | Yes |
| Spam screening | Yes | unstated |
| Custom voice | unstated | Yes |
| API | unstated | Yes |
"unstated" means the vendor doesn't claim it in their own documentation. It is not the same as no — it means nobody will put it in writing.
Ruby plans
| Plan | Published price | Includes | Over that |
|---|---|---|---|
| Virtual receptionist — 50 minutes | $250 /month | 50 min | — |
| Virtual receptionist — 100 minutes | $395 /month | 100 min | — |
| Virtual receptionist — 200 minutes | $720 /month | 200 min | — |
| Virtual receptionist — 500 minutes | $1,725 /month | 500 min | — |
| Live chat — 10 chats | $143 /month | — | — |
| Live chat — 30 chats | $335 /month | — | — |
| Live chat — 50 chats | $520 /month | — | — |
| Bundled chat add-on — 10 chats | Up to 10 chats for $115 (a 20% savings) | — | — |
| Bundled chat add-on — 30 chats | Up to 30 chats for $268 (a 20% savings) | — | — |
| Bundled chat add-on — 50 chats | Up to 50 chats for $416 (a 20% savings) | — | — |
Synthflow AI plans
| Plan | Published price | Includes | Over that |
|---|---|---|---|
| Enterprise | Enterprise contracts start at $30,000 annually(annual billing) | — | — |
Ruby sources
- Plans and pricing (receptionist minute tiers, chat tiers, bundled chat pricing, included features); canonical URL is https://www.ruby.com/plans-and-pricing/ruby.com · read August 19, 2026
- Plans and pricing (canonical URL, same tiers)ruby.com · read August 19, 2026
- FAQs — money-back guarantee, no long-term contract, 60-second rounding statement, Spanish, scheduling, transfers, porting/forwarding, HQ in Portland OR, service arearuby.com · read August 19, 2026
- Ruby billing FAQs PDF (first-party asset host) — 30-second increments, hold time billable, no rollover, overage billed in arrearsassets.ruby.com · read August 19, 2026
- AI at Ruby — Call Nav, transcripts, sentiment analysis, robocall filtering; AI included at no extra cost; explicitly not used to replace human receptionistsruby.com · read August 19, 2026
- Integrations directory (CRM, calendars, legal software, Zapier)ruby.com · read August 19, 2026
- About Ruby — "In 2003, Ruby started as a small business"ruby.com · read August 19, 2026
Synthflow AI sources
- Pricing page (Enterprise-only; "Enterprise contracts start at $30,000 annually"; scoping variables and contract inclusions)synthflow.ai · read August 19, 2026
- Homepage (positioning, target industries, free-trial FAQ answer and PAYG statement)synthflow.ai · read August 19, 2026
- Docs: Billing Overview ("Synthflow uses sales-led pricing", legacy billing labels, do-not-quote-from-docs warning)docs.synthflow.ai · read August 19, 2026
- Docs: Usage and Billing (per-second measurement, minute aggregation with carryover, flat 5s for no-answer, call-state billing table, chat at 5 AI messages per minute, allowances and carryover)docs.synthflow.ai · read August 19, 2026
- Docs: Concurrency (concurrency vs CAPS, "Scoped with Synthflow", no published defaults)docs.synthflow.ai · read August 19, 2026
- Docs: Languages (transcribers Deepgram and Synthflow STT, full supported-language list)docs.synthflow.ai · read August 19, 2026
- Docs: Integrations overview (GoHighLevel, Salesforce, HubSpot, Zendesk, Freshworks, Cal.com, Stripe, WhatsApp, ElevenLabs, Zapier, Make, Bubble, OpenAI/Anthropic/Azure BYOK, telephony)docs.synthflow.ai · read August 19, 2026
- Docs: Logs (call recordings and transcripts, live monitoring, CSV export, opt-out of saving recordings)docs.synthflow.ai · read August 19, 2026
- Docs: Getting started (BELL framework — the customer builds, evaluates and launches)docs.synthflow.ai · read August 19, 2026
- Docs: Custom pricing / reseller plans (Stripe reselling deprecated September 15, 2026; configurable subaccount plans, included minutes, concurrency caps, trials up to 200 minutes)docs.synthflow.ai · read August 19, 2026
- Docs index (call transfer TEL/SIP/dynamic, real-time booking, post-call SMS, in-call SMS/WhatsApp messaging, campaigns/batch calling, IVR handling, telephony and SIP integrations, Platform API)docs.synthflow.ai · read August 19, 2026
- Imprint (operating entity AgentFlow AI GmbH, Kurfürstendamm 15, 10719 Berlin; HRB 255004 B)docs.synthflow.ai · read August 19, 2026