Retell AI

Excellent

by Retell AI · founded 2023 · updated Jul 2026

Retell AI is a developer-friendly platform for autonomous phone and voice agents: build, test and deploy AI that answers calls, books appointments and resolves issues. Pay-as-you-go pricing from ~$0.07/minute (plus LLM and telephony) and production deployments in 2–9 days make it the fast, transparent entry into voice AI.

Customer Experience AIUsage-basedEmergingFrom From ~$0.07 per minute + LLM/telephony

Visit website ↗Compare

82.0TIP Score

Excellent

The score, taken apart

Fixed weights, sources attached, the formula

Capability(30%)81

Value for Money(15%)89

Security & Compliance(15%)78

Integrations & Ecosystem(15%)84

Maturity & Reliability(10%)70

Momentum(15%)87

Best for

◆SMB and mid-market call automation
◆Appointment booking & routing
◆Teams with developers who want control

Key integrations

Twilio & SIP telephonyOpenAI/Anthropic modelsCalendars & CRMsWebhooks & REST APIn8n/Zapier

Strengths

＋Transparent per-minute pricing, model costs before you commit
＋Fastest path to production voice agents (days, not quarters)
＋Developer-grade APIs with full conversation control

Limitations

－Autonomous handling focus; thinner agent-assist tooling
－Younger enterprise compliance story than CCaaS suites
－You assemble the stack (LLM, telephony) vs all-in-one platforms

Evidence behind this score

Every TIP Score is backed by verifiable claims. Data is a curated snapshot, always confirm current terms with the vendor.

Claim	Source	As of
Medical Data Systems runs 100% of inbound debt-collection calls on Retell: ~30% transfer rate, ~$280K/month automated collections activity	Retell AI case studies	Jul 2026
Self-service HIPAA BAA included without enterprise-tier gating	Retell AI compliance docs	Jul 2026
Pay-as-you-go voice platform from ~$0.07/min plus model and telephony costs	Vendor pricing pages	Jun 2026

Intelligence on Retell AI

Fundingmedium impactJul 14, 2026

Voice-AI funding continues: Rime raises $24M Series A

Rime, which fields calls with voice models trained on studio-recorded conversational data, raised a $24M Series A led by M13. More capital chasing contact-center voice quality — worth tracking for teams benchmarking naturalness in collections and support outreach.

Retell AI ElevenLabsFunding coverage

Releasemedium impactJul 11, 2026

xAI ships a no-code Voice Agent Builder at $0.05/min

xAI launched a Voice Agent Builder that spins up production voice agents in under two minutes with no code, priced at $0.05/min of audio plus $0.01/min telephony. More price pressure on voice-agent platforms — worth benchmarking against Retell for high-volume outbound like collections.

Retell AI ElevenLabsxAI announcements

Fundinghigh impactJul 8, 2026

Sierra raises $950M at a $15B valuation, expands into RCM

Sierra's Series E (led by GV and Tiger Global) pushes total funding past $1.5B on ~$200M ARR. Its agents now run revenue-cycle workflows between providers and payers and process insurance claims — a direct signal for healthcare collections and RCM buyers evaluating enterprise CX platforms.

Sierra Decagon Retell AIFunding coverage & Sacra

Securityhigh impactJul 4, 2026

Compliance layers harden for AI voice in collections

New governance products operationalize real-time TCPA, DNC and TSR compliance across collections and regulated outreach, a response to AI voice agents scaling in debt recovery. If you run AI collections calls, a documented consent-and-suppression control layer is now table stakes.

Retell AI Sierra DecagonContact-compliance product launches