Vendor intelligence
Retell AI
A configurable call-agent platform with visual flows, APIs and integrated call operations.
Read the signals. Keep the scope.
A place in your stack.
Best for
- Teams combining structured phone workflows with configurable models.
- Buyers who need a practical route from a call pilot to monitored deployments.
Watch-outs
- The advertised price band is not a ceiling for every model configuration.
- Include carrier, premium voices, optional features and extra concurrency in the budget.
Product specification
What the evidence says.
Unknown means we have not established it. It does not mean No. Compliance claims require plan and contract review.
White label
Current product and plan support for white Label was not established by the reviewed official sources.
Source ↗ (opens in new tab)Source ↗ (opens in new tab)Source ↗ (opens in new tab)Client tenancy
Current product and plan support for client Workspaces was not established by the reviewed official sources.
Source ↗ (opens in new tab)Source ↗ (opens in new tab)Client billing
No supporting statement located in the bounded official corpus; confirm scope with vendor. Unknown is not No.
Source ↗ (opens in new tab)ISO 27001
Not established by the evidence reviewed. This does not mean unsupported.
No verified sourceBAA availability
A self-signing BAA is offered; agreement existence is verified, implementation compliance is not.
Source ↗ (opens in new tab)SIP
Imported numbers and elastic SIP trunking are documented; carrier configuration matters.
Source ↗ (opens in new tab)Warm transfer
Cold, warm and agentic warm transfers are documented. Whisper/debrief and destination telephony configuration determine context delivery.
Source ↗ (opens in new tab)Cold transfer
Cold, warm and agentic warm transfers are documented. Whisper/debrief and destination telephony configuration determine context delivery.
Source ↗ (opens in new tab)Batch calling
MCP tools
MCP tooling is documented; server capabilities and authentication are configured separately.
Source ↗ (opens in new tab)Webhooks
Call-ended and call-analyzed event delivery is documented; your endpoint owns processing.
Source ↗ (opens in new tab)Calendar
Native Google Calendar is described as roadmap. Custom function feasibility does not establish a supported connector.
Source ↗ (opens in new tab)CRM
Dashboard account connection, contact sync and agent functions; permissions and mapping still need setup.
Source ↗ (opens in new tab)Bring your carrier
Imported numbers and elastic SIP trunking are documented; carrier configuration matters.
Source ↗ (opens in new tab)Bring your model
A customer-hosted LLM WebSocket endpoint is documented.
Source ↗ (opens in new tab)Bring your voice
Retell hosts selectable TTS providers without requiring a customer provider key. Arbitrary BYO TTS credentials or endpoints are not established.
Source ↗ (opens in new tab)HIPAA / BAA
Supplier states HIPAA support. Sign a BAA before PHI; configure data handling and the chosen deployment.
Source ↗ (opens in new tab)SOC 2
Retell claims SOC 2 Type 1 and Type 2 reports. The auditor report itself was not reviewed.
Source ↗ (opens in new tab)GDPR
Supplier GDPR statement requires DPA/SCC handling; this page says services do not operate in the EU.
Source ↗ (opens in new tab)Languages
Selected language sets support recognition/detection; provider and closely related-language restrictions apply.
Source ↗ (opens in new tab)Voices
Not established by the evidence reviewed. This does not mean unsupported.
No verified sourceRealtime audio
Not established by the evidence reviewed. This does not mean unsupported.
No verified sourceVoice cloning
Not established by the evidence reviewed. This does not mean unsupported.
No verified sourceArchitecture & connections
Understand the moving parts.
STT
Provider options not established by current research
LLM
OpenAI · Anthropic · Google Gemini
TTS
Retell platform voices · MiniMax · Cartesia · Inworld · Fish Audio · ElevenLabs · OpenAI
TELEPHONY
Twilio · Telnyx · SIP / own carrier
Integrations
Salesforce · HubSpot · Dynamics 365 · GoHighLevel · Zoho CRM · Calendar connectors
Evidence you can inspect.
A documented feature, a supplier claim and an unanswered question are different kinds of evidence.
Evidence coverage details
- Strong-source resolved
- 81
- Vendor-claim only
- 5
- Conditional
- 12
- Other sourced outcomes
- 0
- Unknown after research
- 15
- Conflicting evidence
- 1
- Not applicable
- 0
- Not researched
- 0
Inspect detailed evidence, sources and research gaps
September 2026 remains the historical baseline. A new research date does not mean a feature launched that day. Unknown after research and not researched are separate states.
Official documentation establishes what the supplier documents. No paid calls, independent product benchmarks or compliance audits were performed in this research pass. Coverage measures research work, never product quality.
The operating decision.
Price structure
Component stack
V3.3 evidence review · Published configured-agent range lower reference; not a guaranteed all-in floor or ceiling
Reviewed current public offer; retain original billing scope and units.
Human fallback
Warm transfer · Cold transfer
Derived from individually verified capabilities. Other selections remain Unknown.
Documented transfer is not a staffed human service. Verify who answers, when they answer and what happens if they do not.
Try it yourself
Open official call demo ↗Official homepage offers a callback form. Requires your number and consent; no call was placed during our check.
External signals
No dated external signal in this record. Missing evidence is not a negative review.
Underlying model context: the documented stack above does not establish an exact benchmark checkpoint or its deployed settings. Public model results cannot become a Retell AI score.
Append-only price history
Every capture leaves a trace.
A new check creates a new snapshot. Deltas appear only for the same currency, unit, model and scope.
Tracked: Numeric rate undisclosed · V1 archive · Configuration-based usage
Tracked: $0.055 / minute · Retell Voice Infra component only; not the advertised total range
Tracked: $0.07 / minute · V3.2 evidence review · PAYG
Tracked: $0.07 / minute · V3.3 evidence review · Published configured-agent range lower reference; not a guaranteed all-in floor or ceiling
Tracked: $0.07 / minute · V3.3 evidence review · Published configured-agent range lower reference; not a guaranteed all-in floor or ceiling
New research observations preserve earlier captures. “Evidence improved” records what we learned; it does not claim the market changed on that date. September 2026 is the historical baseline.
Price the actual workflow.
Complete cost cannot be established from this reference. A headline configuration range is not a ceiling on telephony, model, add-on or burst charges. · Telephony, selected LLM/TTS, add-ons and concurrency burst can add charges
Carry the current source into your estimate, then enter the model, voice, carrier and fixed fees your configuration needs.
Alternatives by category
Other full platforms to inspect.
Alphabetical alternatives within the same category. An editorial starting point, not a performance ranking.
Read the Retell AI alternatives guide →
Teams that want AI escalation to land in the same operating environment as human calls.
CompareSmall businesses looking for reception plus follow-up tools in one subscription.
CompareEvidence archive
Inspect the record.
Retell AI pricingreviewed
Retell advertises $0.07–$0.31/minute, but configurable model rates can exceed that range. The separately listed infrastructure component is $0.055/minute. TTS, model, carrier and add-ons are itemized. PAYG includes $10 credits and 20 concurrent calls.
Inspect official source ↗Retell introductionreviewed
Documentation covers flow and prompt agents, warm transfers, SIP bring-your-own telephony, batch calls, webhooks, calendar and CRM integrations, testing and call monitoring.
Inspect official source ↗Retell MCP client releasereviewed
Retell documents an MCP client/node for external tools and both cold and warm transfer to SIP URIs.
Inspect official source ↗Retell affiliate programreviewed
The public program advertises 15% of referred revenue for 12 months, a 90-day cookie and monthly payouts. No VoiceAgent.best enrollment is claimed.
Inspect official source ↗Retell solution partner programreviewed
Retell publishes a solution partner program, separate from creator/affiliate referrals.
Inspect official source ↗Evidence describes documented scope, not a tested platform score. Unknown means a conclusion has not been established; API connectivity does not establish a native integration. Read our research methodology →
Public affiliate program verified; no approved tracking URL.
Solution partner application; no certification claimed.