10 platforms, 17 features. Tiers: SMB/No-code (Voizematic, Synthflow, Lindy AI), Developer (Retell AI, Vapi, Bland AI), Enterprise (Sierra AI, PolyAI, Cognigy/NICE, Genesys). Data from official pages + G2/Gartner reviews. May 2026.
Features compared: Cross-call memory | Human escalation | Transcript+recording | Sentiment analysis | Custom metrics extraction | 1-click data export | Real-time live monitoring | No-code builder | Languages | Bulk outbound | CRM integration | TCPA/DNC compliance | Line type check | Calling time enforcement | Latency | Compliance certs | Starting price
| Platform | Tier | Memory | Escalation | Transcript | Sentiment | Custom Metrics | Export | Live Monitor | No-Code | Languages | Bulk Outbound | CRM | TCPA/DNC | Line Check | Call Time | Latency | Certs | Price |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Voizematic | SMB | Yes (25 calls/contact on Business; 5 Launch, 10 Growth) | Yes — direct + warm transfer, full context passed | Yes — transcript + AI summary + recording on one screen, MP3 download | Yes — per-call positive/neutral/negative, trend tracking | Yes, no-code — configure any field (budget, intent, objection). Auto-runs on all transcripts | Yes — 1-click → Google Sheets, all data + transcripts | Yes — live transcript, intervene in calls, instant alerts | Yes — plain-English prompt, live in 15 min | 34 — native voices, male/female per language, mid-call switch | Yes — from Google Sheets, scheduling + retries | Yes — Google Workspace native (Calendar, Gmail, Sheets, Drive) + API | Yes — 2-layer built-in: FTC National DNC + state DNC auto-checked every call | Yes — cell/landline/VoIP check before dialing (unique) | Yes — no calls before 8am or after 9pm local time | <500ms | TCPA, GDPR, HIPAA (BAA), SOC2-aligned, AES-256 | $49/mo + $0.25/min · India: ₹16/min |
| Synthflow | SMB | Partial — in-call strong, cross-call limited | Yes — handoff with context; no warm-transfer on lower tiers | Yes — transcripts + recordings; not on single unified screen | Yes — sentiment in dashboard, Auto-QA feature | Partial — Custom Evaluations scores criteria; not free-form extraction | Partial — Zapier/webhooks; no native 1-click Google Sheets | Partial — dashboard charts; live call monitoring not confirmed | Yes — drag-and-drop Flow Designer | 30+ — English strongest | Yes — Advanced Batch templates with scheduling + retries | 200+ via Zapier; no native Google Workspace | Partial — no built-in TCPA/DNC; user must configure | No | No | <500ms (US) | SOC2, HIPAA, GDPR, ISO 27001, PCI DSS | $29/mo Starter (50 min) · $375/mo Pro (2,000 min) |
| Retell AI | Developer | Yes — cross-call via knowledge base + history | Yes — warm transfer, barge-in support | Yes — transcribed + summarized + recorded, turn-by-turn replay | Yes — post-call sentiment, action items, outcome scoring | Partial — API/webhook extraction; no no-code UI | API/webhook only | Yes — real-time monitoring dashboard | Partial — visual builder but complex agents need developer | Multilingual (count not published) | Yes — $0.005/dial batch, no concurrency cap | Twilio, SIP, Salesforce, HubSpot via API | Partial — certs present; no built-in TCPA/DNC checking | No | No | ~600ms (benchmark leader) | SOC2 Type II, HIPAA (BAA self-serve), GDPR | $0.07–$0.31/min · all-in ~$0.13–$0.20+ |
| Vapi | Developer | Yes — Squads multi-agent, RAG; 14-day history on non-enterprise | Yes — warm transfer (Squads), human handoff via tool calls | Yes — post-call summaries, sentiment, key events, full transcripts | Yes — post-call sentiment + success evaluation | Yes (dev) — Structured Data Extraction via prompt engineering | API/webhook — custom Boards; no 1-click export | Yes — custom Boards dashboards with real-time KPIs | No — API-first; Flow Studio scratchpad only | 100+ — broadest of all platforms reviewed | Yes — millions of concurrent calls | API-first; no native connectors; US/Canada only on standard plans | Partial — no TCPA/DNC built-in; HIPAA $1K/mo add-on; GDPR gaps | No | No | <600ms | SOC2, HIPAA (add-on), PCI; no ISO 27001 | $0.05/min base + LLM + TTS + STT · all-in $0.13–$0.33 |
| Bland AI | Developer | Yes — cross-call memory; long-term context store in dev | Yes — transfer to human + voicemail; context passed | Yes — full transcripts + post-call analysis + real-time logs | Partial — confirmed on Growth plan+ | No — must build via API/webhooks | API/webhook only | Yes — real-time logs + post-call analysis | Partial — Pathways builder but developer-heavy overall | Multilingual + voice cloning; own TTS/STT/LLM stack | Yes — 1M concurrent calls, 20K/hr | HubSpot, Salesforce via webhooks; SIP + Twilio | Partial — no built-in TCPA/DNC | No | No | Sub-1s (own stack) | SOC2, HIPAA, GDPR; no 3rd-party model dependencies | $0.09/min + plan · Build $299/mo, Scale $499/mo |
| Sierra AI | Enterprise | Yes — long-term across sessions | Yes — sentiment-triggered; full context to human | Yes — transcripts + recordings + outcome tracking | Yes — vocal pitch/pace/word choice; adaptive tone mid-call | Yes — custom business objectives defined at contract | Partial — tied to enterprise contract; no self-serve export | Yes — real-time monitoring, Agent Copilot, brand governance | Partial — requires Sierra team involvement | Multilingual, omnichannel | Yes — inbound + outbound with action capabilities | Deep enterprise CRM + backend, real-time data fetch | Partial — enterprise compliance; no built-in TCPA/DNC auto-check | No | No | Very low (enterprise) | Enterprise-grade, outcome-based SLA | Custom · ~$200K–$350K+/yr (Fortune 50) |
| PolyAI | Enterprise | Yes — complex long conversations, topic switches | Yes — 50%+ containment; full history to human | Yes — detailed analytics, 80–87% containment documented | Yes — proprietary Owl (speech) + Raven (reasoning) models | Partial — defined at deployment; no self-serve UI | Partial — export tied to contract; no self-serve | Yes — containment tracking, real-time visibility | No — all changes via PolyAI team; 6-week deployment | 12+ (Agent Studio); proprietary speech models | Yes — enterprise concurrency via contract | Genesys, Five9, Avaya, Amazon Connect, Cisco | Partial — enterprise framework; no built-in TCPA/DNC auto-check | No | No | High performance (containment-tuned) | SOC2 Type II, HIPAA, GDPR, PCI DSS, ISO 27001 — most complete | Custom · ~$150K+/yr |
| Cognigy (NICE) | Enterprise | Yes — semantic search, Knowledge AI cross-session | Yes — Agent Copilot for live human suggestions | Yes — omnichannel transcripts + recordings, Insights Suite | Yes — NLU + sentiment, conversational intelligence | Yes — custom metrics via Insights Suite dashboards | Partial — enterprise dashboards; no 1-click Google Sheets | Yes — NICE CXone real-time monitoring | Partial — Visual Agent Manager; complex flows need dev | 100+ — broadest NLU of enterprise platforms | Yes — outbound notifications, reminders, proactive outreach | Avaya, Genesys, Salesforce, Microsoft, Zendesk, AWS; overlays CCaaS | Partial — enterprise compliance; no built-in TCPA/DNC | No | No | Low (enterprise) | SOC2, HIPAA, GDPR, PCI DSS, ISO 27001 | Custom enterprise |
| Genesys Cloud CX | Enterprise | Yes — unified context across voice, chat, email, social | Yes — AI-assisted routing by skill/sentiment; seamless bot-to-agent | Yes — built-in transcription, topic analysis, searchable all channels | Yes — real-time sentiment, dynamic routing | Yes — handle time, CSAT, routing accuracy dashboards | Partial — Salesforce/API export; no 1-click Google Sheets | Yes — unified agent desktop, real-time queue + sentiment | Partial — Architect designer powerful but complex | Global multilingual, enterprise-grade | Yes — campaigns, AI-assisted dialing, predictive engagement | Salesforce native + 300+ connectors | Partial — enterprise compliance; no built-in TCPA/DNC | No | No | Enterprise-grade | GDPR, HIPAA, PCI DSS, SOC2, ISO 27001 | Custom enterprise |
| Lindy AI | SMB | Yes — learns preferences, memory per contact across calls | Yes — human-in-loop with configurable approval gates | Yes — summaries + transcripts; CRM fields auto-updated | Partial — LLM reasoning on transcripts; no dedicated scoring | Partial — CRM field extraction; no dedicated voice metrics system | Partial — HubSpot/Salesforce via integration; no 1-click Sheets | Partial — workflow status visible; no call-level live view | Yes — plain-English creation (Gaia phone agent) | 30+ (Gaia) | Yes — Gaia outbound + email + calendar automation | HubSpot, Salesforce, Gmail, Slack, 4,000+ apps | Partial — GDPR/SOC2/HIPAA/PIPEDA; no TCPA/DNC voice checking | No | No | Not published | SOC2, HIPAA, GDPR, PIPEDA | Free (400 credits/mo) · $49.99/mo + $0.19/min · $10/mo phone number |
SMBs: Voizematic is the only SMB platform with 2-layer TCPA/DNC + line type check + Google Workspace all native, no Zapier needed. Synthflow and Lindy are strong alternatives but lack compliance automation.
Developers: Vapi = broadest languages (100+). Retell AI = latency leader (~600ms). Bland AI = highest scale (1M concurrent). None have built-in TCPA/DNC.
Enterprise: Sierra AI + PolyAI = outcome-based, $150K–$350K+/yr. PolyAI has the strongest cert suite. Cognigy + Genesys overlay existing CCaaS infrastructure.
Compliance winner: Voizematic is the only platform with built-in TCPA/DNC list checking AND line type verification before every outbound call. All others make TCPA the user's responsibility.
Sources: Official product pages + G2, Gartner, Vellum, Softailed, Coval, Zeeg reviews. Data as of May 2026.
Voizematic pricing | Features | vs Bland AI | vs Vapi | vs Retell AI