LumisReach vs Retell AI (2026): Which AI Voice Agent Should You Pick?

Prices and features below were checked against each company's own website on October 17, 2026. Both products change often, so treat this as a snapshot and follow the source links before you sign anything.

What is the difference between LumisReach and Retell AI?

Retell AI is a voice-agent platform. You bring a prompt, choose a speech-to-text model, a large language model and a text-to-speech voice, connect telephony, write the tool calls, and ship the agent yourself. It is excellent infrastructure, and it is sold as infrastructure: per-minute components, concurrency limits, knowledge-base fees and add-ons, all on a public price list.

LumisReach is a finished agent. The product is an AI phone receptionist for inbound calls and an AI outreach agent for outbound calls, plus speed-to-lead callbacks, two-way SMS, email and website chat on the same backend. The LumisReach team builds the agent around your price list, hours, service area and the questions your callers actually ask, then it books straight onto your calendar and writes every call into your CRM. There is nothing to code.

So the honest framing is: Retell is what a software team buys to build a product like LumisReach. LumisReach is what a law firm, a plumbing company, a dealership or a sales team buys so they never have to.

LumisReach vs Retell AI at a glance

How does pricing compare?

Retell publishes a component price list. The headline pay-as-you-go range on its pricing page is $0.07 to $0.31 per minute. The pieces that make up a minute, as listed on October 17, 2026:

• Retell voice infrastructure: $0.055 per minute
• Text-to-speech: $0.015 per minute for the platform voices, more for ElevenLabs voices
• LLM: from under a cent per minute for small models to $0.064 per minute for current frontier models, and $0.16 or more for the largest
• Telephony: $0.015 per minute through Retell's carriers, or free if you bring your own SIP trunk
• Phone number: $2 per month
• Concurrency: 20 concurrent calls free, then $8 per concurrent call per month
• Batch calling: $0.005 per dial; branded call ID: $0.10 per outbound call
• Knowledge base: first 10 free, then $8 each per month, plus $0.005 per minute when used

Retell's own calculator defaults to about $0.11 per minute for a typical configuration. That is a fair number to plan on for the platform cost alone. It does not include the engineer who builds and maintains the agent, the CRM integration, or the compliance review, because Retell does not sell those.

LumisReach prices the finished agent, hired by the job. The Receptionist, which answers inbound calls, books and transfers, is $295 per month and includes 500 voice minutes plus a shared team inbox and CRM. The Speed-to-Lead agent is $395 per month with 250 minutes, the Outbound SDR is $395 per month with 500 minutes, and the Operations Specialist, which runs both the automations and the outbound campaigns, is $595 per month with 1,000 minutes. Agents are bought à la carte with no bundle discount, and annual billing takes two months off. Voice beyond the included minutes is a flat $0.20 per minute, inbound or outbound, billed by the second. Human call legs after a transfer are $0.07 per minute, branded calling is $0.20 per call, SMS is $0.012 per segment and email is $0.002 per message. Extra seats are $95 per month each. Starting costs $20, which buys a working phone number and $10 of calling credit to test with real calls. Developers who want only the REST API and MCP server pay $20 per month, credited back as $20 of usage. Current figures are on the LumisReach pricing page.

Per minute, Retell is cheaper. Per working agent, LumisReach is usually cheaper, because the Retell number assumes you already pay someone to build, test, integrate and watch the agent. If you have that person, Retell's economics are hard to beat. If you do not, the $295 Receptionist includes them.

Which one sounds more natural on the phone?

Retell lets you choose the pipeline. The classic chain is speech-to-text, then an LLM, then text-to-speech, and Retell offers speech-to-speech models as an alternative at a higher per-minute rate. How natural the agent sounds depends on which models you pick, how you tune turn-taking and interruption handling, and how far your telephony is from your inference. That is real engineering work, and good teams get very good results.

LumisReach runs unified speech-to-speech models hosted alongside its carrier connection, so the audio does not take a detour through separate transcription and synthesis services. The practical result is lower round-trip latency and more natural pacing on the call, and it is the default for every customer rather than a configuration you have to earn. You can hear it on the LumisReach homepage by talking to the live demo agent.

What about compliance for outbound calling?

This is where the two products diverge most. Retell gives you safety guardrails and PII removal as per-minute add-ons, and it gives you a batch-calling API. Whether a given campaign respects Do Not Call lists, state calling-hour rules, consent requirements and recording disclosures is up to the agent you build.

LumisReach runs outbound campaigns as a managed workflow. Every number is checked against federal, state and internal Do Not Call lists before it is dialed, 16 state rulebooks are enforced for calling windows, consent and recording disclosures are built into the agent flow, and "take me off your list" opts the contact out automatically. Branded caller ID puts your registered business name on the handset instead of a spam label. A HIPAA Business Associate Agreement is available for healthcare customers. LumisReach handles the infrastructure; you still loop in your own counsel on customer-facing consent.

Which integrations come built in?

LumisReach ships with calendar sync (Google Calendar, Outlook, Apple Calendar, Cal.com, NexHealth), CRM auto-logging with two-way sync (Salesforce, HubSpot, Zoho, Pipedrive), legal and healthcare systems (Clio, Dentrix, Open Dental, athenahealth), and Zapier, Make, webhooks and a REST API for everything else. Every call lands as a recording, transcript, summary and structured fields on the contact record. Developers also get a hosted MCP server, so Claude or Cursor can place calls and read transcripts directly.

Retell integrates with anything, because you write the integration. It exposes webhooks and custom tool calls, and the community has published connectors for the common CRMs. The difference is who holds the pager when HubSpot changes its API.

When should you choose Retell AI?

• You are building a voice product of your own and the agent is the product.
• You have engineers who will own prompts, tools, evaluation and uptime.
• You need to pick specific STT, LLM and TTS vendors for cost, language or latency reasons.
• You already have SIP trunking and want to reuse it.
• You want the lowest possible per-minute platform cost and can absorb the build cost.

When should you choose LumisReach?

• You want inbound calls answered, qualified and booked, starting this week, with no code.
• You want outbound calling that is already wired to DNC scrubbing, branded caller ID and your CRM.
• You need SMS, email and chat follow-up from the same agent that took the call.
• You are in a regulated vertical, such as legal, healthcare or lending, and want HIPAA and TCPA tooling as defaults.
• You would rather pay a flat per-minute rate than assemble one from six line items.

Can you use both?

Yes, and some teams do. A company can build an internal voice tool on Retell while running its front desk and outbound campaigns on LumisReach, because the two products solve different problems. LumisReach also exposes a REST API with 90-plus endpoints and an MCP server with 37 tools on a $20 per month API and MCP plan, so a developer who wants programmatic calls without building the agent can start there.

Frequently asked questions

Is LumisReach a Retell AI alternative?

Yes, for anyone who wants an AI phone agent without building it. LumisReach is a finished AI receptionist and outbound agent with CRM, calendar, SMS and email built in, while Retell AI is a platform for developers who build their own agent. If you were evaluating Retell because you need calls answered or leads called back, LumisReach does that job out of the box.

Which is cheaper, LumisReach or Retell AI?

Retell AI is cheaper per minute of platform usage, at roughly $0.07 to $0.31 per minute depending on the models you choose, with a typical configuration around $0.11. LumisReach hires out a Receptionist at $295 per month with 500 minutes included and $0.20 per minute after, but that price includes a configured agent, integrations, compliance tooling and support, which Retell does not sell.

Does Retell AI require coding?

Retell AI has a visual agent builder, but a production agent still needs prompt engineering, custom tool calls for booking and CRM writes, telephony setup and ongoing monitoring. Most teams run it with an engineer. LumisReach requires no coding; the LumisReach team configures the agent from your business information.

Does LumisReach have an API like Retell?

Yes. LumisReach offers a REST API for calls, texts, numbers, transcripts and webhooks, plus a hosted MCP server for Claude and Cursor, on an API and MCP only plan at $20 per month that is credited back as usage. The difference is that the API drives a finished agent rather than exposing the raw model pipeline.

How do I try LumisReach or Retell AI?

Retell AI gives new accounts $10 in free credits. LumisReach starts at $20, which includes a working phone number and $10 of calling credit to test with real calls, or you can book a 30-minute setup call.

Sources

• Retell AI pricing, checked October 17, 2026
• LumisReach pricing
• LumisReach integrations directory
• LumisReach Call Receptionist and Call Outreach Agent