Best AI receptionist software

The best AI receptionist is not necessarily the product with the longest feature list. A practice wanting human fallback, a local business with repeat callers, and a team building multilingual intake are buying different operating models.

This guide compares those models directly. ThunderPhone is included because this is ThunderPhone's site, but it is evaluated under the same criteria as every other option.

Selection criteria

Use these criteria before looking at vendor names:

1. Operating model. Choose a configurable platform, a packaged SMB receptionist, or a service with people behind the AI.
2. Billing unit. Price minutes, calls, distinct callers, concurrency, subscriptions, overages, and pass-through charges. Per-call pricing cannot become per-minute pricing without a call length.
3. Phone setup. Check number import, forwarding, SIP, and vendor-provided-number requirements.
4. Escalation. Separate transfer to your own staff from escalation to a vendor-operated receptionist network. They solve different staffing problems.
5. Workflow depth. Map the receptionist jobs you need: qualification, scheduling, routing, knowledge lookup, integrations, testing, and post-call review. See how those needs translate to a virtual front desk or appointment scheduling flow.
6. Languages and compliance. Verify the exact language-and-voice combination and the agreement available on your tier. Marketing badges are not a substitute for reviewing your configured workflow.

The shortlist at a glance

“Strength” and “Best for” are editorial fit assessments, not vendor claims.

1. ThunderPhone: best for published pay-as-you-go rates and test depth

ThunderPhone charges no subscription or seat fee. Base rates are Spark at 2¢/minute, Bolt at 5¢/minute, and Storm at 9¢/minute. Premium voice or language paths add a flat 3¢/minute, and the builder displays the current all-in rate. Telephony and optional configuration charges depend on setup.

The catalog contains 47 voice languages and 123 voices, with automatic switching when a caller uses a configured additional language. Production numbers can connect through supported direct VoIP paths or manual SIP configuration for any SIP trunk. Testing covers browser mic calls, AI-caller simulations, reusable graded scenarios, regression suites with minimum pass-rate gates, CI execution, and live-traffic A/B experiments; simulations are billable real calls and show the charge before a run.

Strength: Published usage arithmetic, telephony flexibility, and a broad pre-launch test surface in one configurable platform.

Best for: Teams that want to own the receptionist's prompt, integrations, knowledge, phone path, and release process. It is also a candidate for multilingual call answering.

2. Smith.ai: best for an AI-first service with human backup

Smith.ai positions its AI Receptionist as a 24/7 service backed by more than 500 North America-based receptionists. Calls start with AI and can escalate to its live agent network. That is a meaningful strength for businesses that do not want every difficult call to land on their own employees. Smith.ai AI Receptionist and Smith.ai pricing, accessed 2026-08-20.

Billing is per answered real call, not per minute. The Free tier includes 25 calls. Published Pro options are $150 for 75 calls, $270 for 150, and $500 for 300; published Enterprise options include $500 for 300 and $800 for 500 before custom pricing at 1,000-plus calls. Every answered call counts by default, subject to the published spam rules. The price of optional live-agent involvement is not published, and Smith.ai publishes no call-length figure that would make a per-minute conversion computable. Smith.ai pricing, accessed 2026-08-20.

Smith.ai publishes conversational fluency in English and Spanish, 12-plus voices, scheduling, native integrations, and Quality Studio testing. Its AI Receptionist page says integrations reach 5,000-plus apps, while its homepage says 7,000-plus tools. Smith.ai AI Receptionist and Smith.ai homepage, accessed 2026-08-20.

Strength: A real human escalation network and managed-service options that a software-only comparison can otherwise miss.

Best for: Legal, professional-service, and other intake teams where a smaller number of potentially long, high-value calls justifies per-call billing and vendor-operated human backup.

3. Goodcall: best for repeat-caller SMBs

Goodcall packages a no-code phone agent around skills, flows, a dedicated number, and integrations. Its self-serve plans are $79, $129, and $249 per agent per month with 100, 250, and 500 unique callers respectively; overage is $0.50 per additional unique caller. Minutes and tokens are described as unlimited. A caller who phones repeatedly from the same number counts once in that month under Goodcall's published definition. Goodcall pricing, accessed 2026-08-20.

That model can be attractive for a shop, clinic, or service business with recurring customers and long conversations. It is less predictable when most calls come from new numbers. The pricing page lists annual Starter at $66 per agent per month, while Goodcall's local-number page says plans start at $41 per agent per month billed annually. Goodcall pricing and Goodcall local numbers, accessed 2026-08-20.

Goodcall is currently U.S.-only, does not support number porting or toll-free numbers, and documents conditional forwarding as the keep-your-number route. Its supported-language list and voice-catalog size are not established in the reviewed public product documentation. Goodcall availability, porting, and toll-free-number support, accessed 2026-08-20.

Strength: Distinct-caller billing rewards repeat traffic, while the packaged skills-and-flows approach reduces setup work.

Best for: U.S. local businesses with a stable base of repeat callers, straightforward routing, and no requirement to port a number or use SIP.

4. Phonely: best for a low-volume, bundled-number start

Phonely publishes a Free tier with 100 minutes, Starter at $50 per month with 250 minutes, and Pro at $150 with 750 minutes. Starter and Pro overage is displayed at $0.25–$0.35 per minute depending on plan and billing cadence, and the tiers bundle one, three, or five numbers. The Free tier requires an upgrade after its allowance rather than billing overage. Phonely pricing, accessed 2026-08-19.

Its pricing table lists unlimited concurrent calls, A/B testing, outbound calling, a custom knowledge base, transfers, and email and SMS notifications. The homepage markets 100-plus languages and 1,000-plus voices; the pricing table instead groups “100+ voices & Languages,” and the reviewed documentation does not publish a static catalog count. SIP trunking and the HIPAA BAA are placed on Enterprise, while the public number-import API accepts only one carrier source. Phonely homepage, pricing, and number-import docs, accessed 2026-08-19.

Strength: A genuine free tier, bundled numbers, and clear self-serve packages for modest usage.

Best for: Small teams expecting to stay near the included-minute blocks and wanting voice, SMS, and chat in the same product.

5. Thoughtly: best for sales-led, multichannel lead response

Thoughtly's current positioning is GTM-focused rather than front-desk-focused. Its Autopilot product calls, texts, and emails inbound leads, while its broader platform emphasizes CRM synchronization, workflows, and speed to lead. Thoughtly homepage and Thoughtly Autopilot, accessed 2026-08-20.

Flex starts at $500 per month with 10 concurrent calls; Scale and Enterprise are custom. The pricing table says voice minutes are unlimited, while its FAQ says usage above monthly allowances is billed in arrears. Thoughtly's billing docs say pay-as-you-go rates come from sales. No current per-minute rate, overage rate, or complete cost for a fixed-minute workload is published, so it is not computable from the reviewed public pages. Thoughtly pricing and Thoughtly billing docs, accessed 2026-08-20.

Its language page lists 34 languages, the product page says 30-plus, and its voice documentation lists 15. Thoughtly languages, product, and voice docs, accessed 2026-08-20.

Strength: Multichannel lead engagement and CRM-centered workflows rather than a voice-only receptionist box.

Best for: Sales teams whose real requirement is rapid, persistent lead follow-up across phone, text, and email.

6. Retell AI: best for component-level control

Retell publishes voice infrastructure at $0.055 per minute and an advertised configured range of $0.07–$0.31 per minute, with model, voice, telephony, and optional features itemized. Twenty concurrent calls are included, additional concurrency is $8 per call slot per month, and custom telephony through SIP trunking carries no Retell charge. Retell pricing, accessed 2026-08-18.

Retell documents simulation testing and publishes compliance paths for SOC 2 Type 1 and Type 2, HIPAA with a signed BAA, and GDPR through a DPA and standard contractual clauses. It does not publish one static language total; its documentation says coverage depends on the selected components and the dashboard is the source of truth. Retell simulation docs, compliance docs, and language docs, accessed 2026-08-18.

Strength: Detailed component choices, SIP support, and an explicit configured price range.

Best for: Technical teams comfortable assembling and monitoring several cost and capability layers.

7. Vapi: best for engineering teams bringing their own stack

Vapi's Build plan charges $0.05 per minute for call hosting. Speech, model, voice, and telephony costs sit on top at provider cost, with supported bring-your-own keys reducing the corresponding provider line to zero. Build includes 10 concurrent calls; extra lines are $10 per month. Vapi pricing, accessed 2026-08-18.

Its documentation supports a generic SIP-provider connection and test suites that run scripted chat or real voice calls against success criteria. HIPAA is priced at $2,000 per month and zero data retention at $1,000 per month. A single complete per-minute total is not published because it depends on the selected providers and telephony. Vapi SIP docs, test-suite docs, and pricing, accessed 2026-08-18.

Strength: Developer control over each infrastructure component and a documented generic SIP route.

Best for: Engineering organizations that already manage provider accounts and prefer composable infrastructure to one bundled rate.

8. Bland AI: best for bundled enterprise deployment options

Bland publishes talk rates of $0.14, $0.12, and $0.11 per minute on Start, Build, and Scale, with platform fees of $0, $299, and $499 per month. Those tiers allow 10, 50, and 100 concurrent calls. The company says its rate covers the model, speech recognition, and voice in one number; telephony choices and transfer charges still need to be checked for the selected setup. Bland pricing, accessed 2026-08-18.

Bland advertises 40-plus languages, SIP or directly supported bring-your-own telephony, and managed-cloud, customer-VPC, on-premise, and air-gapped deployments. Its trust page describes SOC 2 Type II and PCI DSS as independently assessed while describing HIPAA and GDPR as self-attested. Bland homepage and Bland trust page, accessed 2026-08-18.

Strength: A more bundled usage rate plus deployment choices for security-sensitive environments.

Best for: Larger teams evaluating concurrency tiers, self-hosting, or private deployment alongside voice automation.

9. ElevenLabs Agents: best for voice choice and automated testing

ElevenLabs Agents publishes tiers from Free through Business, with 15 to 12,375 included call minutes and concurrency from 4 to 40. Additional minutes cost $0.08, while the model and telephony are billed separately. A complete configured total is therefore not computable from the platform rate alone. ElevenLabs Agents pricing, accessed 2026-08-19.

The platform documents SIP trunking for inbound and outbound calls, 31 configured agent languages, and simulation, next-reply, and tool-call tests with API and command-line execution for CI. ElevenLabs SIP docs, language docs, and testing docs, accessed 2026-08-19.

Strength: A large voice-centered product surface paired with SIP and mature automated testing.

Best for: Teams that prioritize voice selection and test automation and are willing to model separate platform, model, and telephony costs.

How to make the final choice

Choose Smith.ai if vendor-operated human backup is the deciding requirement. Choose Goodcall if distinct-caller pricing matches a repeat-customer SMB. Choose Phonely if low-volume bundles and provided numbers are more useful than unrestricted SIP. Choose Thoughtly if “receptionist” really means multichannel sales follow-up. Choose Retell, Vapi, Bland, or ElevenLabs Agents when their particular component, deployment, or voice architecture matches an engineering requirement.

Choose ThunderPhone if you want published base rates without a subscription, 47 voice languages and 123 voices, production SIP options, and a test process that extends from browser calls through CI gates. ThunderPhone's public posture is GDPR and HIPAA compliant. Customers remain responsible for configuring their workflows, data handling, recordings, integrations, and notices for their own obligations.

Before signing, run the same call set through your finalists: a simple FAQ, a booking request, an urgent transfer, an ambiguous request, a caller changing language, and a failed integration. Then price the observed minutes, calls, transfers, and distinct callers using each vendor's actual billing unit. The result will be more useful than a universal ranking.

Sources and freshness

Every third-party claim is linked to the vendor's official site or documentation, with the access date shown beside each citation: Smith.ai, Goodcall, and Thoughtly pages were accessed 2026-08-20; Phonely and ElevenLabs pages 2026-08-19; Retell, Vapi, and Bland pages 2026-08-18. ThunderPhone claims come only from the ThunderPhone facts pack verified for this content batch. This is a public-documentation comparison, not a hands-on product test. Prices, tier gates, compliance terms, and telephony eligibility can change; confirm any decision-critical item on the linked live page and in your contract. Where a vendor does not publish a rate, language count, or complete configured total, this guide leaves it unpublished rather than estimating it.