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Comparison · SoundHound

Assistable vs SoundHound

SoundHound engineers and operates voice AI at massive vertical scale, from drive-thrus to in-car assistants to Fortune 500 contact centers. Assistable puts the whole stack behind a self-serve signup: buy a number in-app, publish a versioned agent, and take your first live call in minutes at published voice rates.

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Plans from $225 a month. Usage billed as you go.

<500 ms latency·99.99% uptime·4.6/5 on Trustpilot

The bottom line

Assistable

Assistable puts the same category of capability behind a self-serve signup. Onboarding creates your first assistant automatically, grants $10 in usage credit, and lets you buy a US or Canadian local number in-app, so the first live call happens in minutes rather than after a procurement cycle. Versioned publishing with one-click rollback, warm transfers with ordered fallback hunting, a minutely campaign dial engine, and an LLM judge grading every finished call are all in the platform with usage billed on top of your plan.

SoundHound AI

SoundHound sells voice AI the way large enterprises buy it: through a sales-led engagement where the vendor engineers the deployment. Amelia 7 gives Fortune 500 contact centers an agent platform with a no-code builder and a contact-center escalation suite, while dedicated implementation teams integrate drive-thru, in-car, and custom deployments with your existing hardware and software. Enterprise pricing is quote-based, and the path to production runs through discovery, technical deep-dives, and ROI assessment.

The real comparison

Six places the platforms actually differ.

The same six questions on every comparison page. Here is how Assistable and SoundHound each answer them.

01 / 06

Time to first live call

From signup to an agent answering a real phone call.

Assistable

Sign up at platform.assistable.ai and onboarding creates your first assistant automatically, grants $10 in usage credit, and lets you buy a real US or Canadian local phone number in-app. The first live call happens in minutes, in one sitting, with no sales call and no engineering. Full production rollouts run 2-3 day deploys.

SoundHound

Amelia's path to production is a partnership process: Discovery, Technical Deep-Dives, ROI Assessment, and Deployment Identification, with no self-serve enterprise signup and no published go-live timelines. The exception is Smart Answering for SMBs, which is self-serve with a free trial and activates by forwarding your existing number.

Assistable delivers

First assistant created automatically during onboarding·Free local phone number plus $10 in calling credit at signup·US or Canadian local number purchased in-app·2-3 day deploys for full production rollouts

02 / 06

Infrastructure and telephony

What you assemble before production, and who runs it.

Assistable

Numbers, SIP, recordings, and call control run on the platform's own carrier-grade voice stack, so you never create a telephony account or wire STT, TTS, and LLM providers together. One channel gateway puts web chat, SMS, and voice on one data plane, with identity resolution mapping every phone number, email, and web visitor to one contact record before the agent runs. Compliance rails are built in: DNC scrubbing, honeypot detection, A2P 10DLC registration, KYC review.

SoundHound

SoundHound owns its speech stack end to end, including the Polaris ASR foundation model, and offers true edge deployment for in-vehicle and on-prem drive-thru hardware. Smart Answering runs on call forwarding of your existing number; in-app number purchasing is not documented. Enterprise deployments are integrated with your existing POS, headsets, and hardware by SoundHound's implementation team.

Assistable delivers

US local and toll-free number search and purchase in-app·BYO numbers via an automatically provisioned TLS SIP trunk·Durable outbox retries sends up to 5 times, backing off 30 seconds to 1 hour·<500 ms latency, 0.4s median answer, 99.99% uptime SLA

03 / 06

Version control and rollback

How changes ship, and how fast you can undo one.

Assistable

Publishing writes an immutable numbered version while live traffic keeps executing the last published one, and the version that serves traffic is an explicit deploy pointer, not latest wins. Rollback is one click: activate any prior version and traffic moves instantly. Branches stage bigger rewrites and merge into Main without changing the flow id, so phone numbers, endpoints, and channels keep pointing at the same agent. Publish and rollback are role-gated and audit-logged.

SoundHound

Amelia's public docs describe the low-code design tool, the AI agent builder, and a catalog of pre-built agents, but do not mention version history, rollback, environments, or draft-vs-live separation for agent configs. Release tooling may exist behind the login; you would confirm it during the sales engagement.

Assistable delivers

Append-only version history with author on every version and a Live badge·One-click rollback to any prior version·Branch merges keep the flow id, so numbers never re-point·Test drawer runs the draft on the production engine, tools, and models

04 / 06

Call routing and transfers

What happens when a caller needs a human.

Assistable

Warm transfer holds the caller on hold music, dials your team in order with ordered fallback hunting (up to 6 dial attempts, 25-second default ring timeout per attempt), and screens each leg with answering-machine detection so voicemail never gets the call. Before bridging, the human hears a private briefing, static text or generated by the LLM from the live call transcript. Connected, voicemail, no-answer, and failed each route their own flow branch, and unanswered transfers can resume the AI instead of hanging up.

SoundHound

Smart Answering documents Selective Call Forwarding: based on context, time of day, and who is working, callers are forwarded to the right employee. On Amelia, escalation runs through a Contact Center module, the command hub for AI-escalated hand-offs with escalation teams, queues, and live monitoring, plus an Agent Console copilot for human reps. Warm versus cold transfer mechanics and fallback chains are not publicly documented.

Assistable delivers

Ordered fallback hunting: up to 6 dial attempts, 25s default ring timeout each·Answering-machine detection screens every transfer leg·LLM-generated whisper briefing from the live call transcript·Tag rules route contacts to assistants per channel with priority and active hours·Per-minute sweep force-resolves stale holds

05 / 06

Outbound at scale

Dialing a list without burning it.

Assistable

A dial engine converges every minute: it starts scheduled campaigns, tops running ones up to their concurrency cap, and marks them completed when the list drains, with claim-first updates that make double-dials impossible. Calling windows are timezone-aware with day-of-week selection and overnight wrap, and retries for no-answer, busy, and failed honor the window. A/B splits must sum to 100 before start, and deficit-based assignment converges live traffic on the configured split. Wallet at zero pauses the campaign with a stated reason instead of burning the list.

SoundHound

SoundHound's homepage claims outbound AI agents that set appointments and qualify leads, and Smart Answering lists automated text or call follow-ups. No batch campaign tooling, scheduling windows, retry policies, or script A/B testing is documented anywhere public.

Assistable delivers

Enroll up to 25,000 contacts by filter, hand-picked list, or CSV·A/B assistant splits with per-assistant answered and dialed rollups·DND, blacklist, and E.164 checks gate every dial·Outcomes reconcile seconds after hangup: answer rate, transfers, appointments, spend·CSV export and on-demand AI executive summary per campaign

06 / 06

Observability and QA

How you find out something went wrong.

Assistable

Write monitor rules in plain English and an LLM judge grades every finished call and chat against them, citing the decisive moment in the transcript with a confidence score. The AI drafts a minimal prompt fix, shows a line diff, and proves it by replaying the failing conversation 3 times through the published flow and re-judging; confidence is the measured pass rate, never self-reported. Repeat failures cluster into issues, and per-rule health tracks fire rate, drift, silence, and human-overturn rate.

SoundHound

Amelia ships first-party observability: an Analytics module that replays full conversation flows and tracks NPS factors and answer accuracy, a Learnings dashboard for intent and resolution rates and friction points, and live conversation monitoring inside the Contact Center module. No automated eval suite, regression testing, or QA scoring framework appears on their site.

Assistable delivers

LLM judge grades every finished call and chat against enabled rules·Verdicts cite the decisive transcript moment with confidence·Fixes proven by 3 replays through the published flow before apply·Recording, transcript, sentiment, and itemized cost on one call row

At a glance

Side by side

Getting live

Self-serve signup
AssistableYes
SoundHoundSmart Answering (SMB) only
Time to first live call
AssistableMinutes, in one sitting
SoundHoundSales-led engagement for enterprise
Published deploy timeline
Assistable2-3 day deploys
SoundHoundNot published

Telephony and routing

Buy phone numbers in-app
AssistableYes
SoundHoundNot documented, forwarding-based
Warm transfer with fallback hunting
AssistableYes
SoundHoundNot publicly documented
Time-based routing
AssistableTag rules with active hours
SoundHoundSelective Call Forwarding (SMB)

Agent operations

Version history and rollback
AssistableYes
SoundHoundNot publicly documented
Outbound campaign engine
AssistableA/B splits, windows, retries
SoundHoundOutbound claimed, no tooling documented
Automated QA
AssistableLLM judge on every call
SoundHoundAnalytics and Learnings dashboards

Pricing

Voice
Assistablepublished voice rates
SoundHoundQuote-based for enterprise
Messages
Assistable$0.02 each
SoundHoundNot published
Entry point
AssistableFree signup, pay as you go
SoundHoundSmart Answering $29.99/mo, first 200 calls, then $0.20/call
Platform and seat fees
AssistableNone
SoundHoundNot published

SoundHound AI capabilities and pricing reflect their publicly published information as of July 2026 and may change.

Why teams switch

Why teams choose Assistable.

01

Live the day you sign up

Onboarding creates your first assistant, grants $10 in calling credit, and sells you a real local number in-app. The first live call happens in minutes, and full production rollouts run 2-3 day deploys.

02

Version control for agents

Immutable numbered versions in an append-only history, an explicit deploy pointer with one-click rollback, and branches that merge without changing the flow id. Live traffic never executes an open draft.

03

Telephony that behaves like a phone system

Ordered team hunting with answering-machine detection, whisper briefings generated from the live transcript, tag rules with active hours, and DND, blacklist, and wallet gates on every outbound dial.

Under the hood

The infrastructure
most platforms rent.

We operate dedicated network, telephony, and compliance rails, and let you choose the models on top. That is what keeps conversations fast, clear, and safe at scale.

  • Edge

    Co-located edge PoPs and GPUs power low-latency voice AI globally.

  • Telephony

    A full telephony stack built in: native calling and texting without wiring a carrier.

  • Network

    Audio runs on a private global network, bypassing the public internet for call quality.

  • Compliance

    A programmatic compliance layer: DNC and honeypot detection, 10DLC and KYC, attribution reporting.

  • Models

    LLM, TTS, and STT à la carte, self-hosted or from major providers. Enterprises can bring their own keys.

  • Languages

    100+ languages and dialects, with real-time multilingual transcription and translation.

  • Coverage

    Calling and texting in 105+ countries.

Questions

Assistable vs SoundHound, answered.

What is the difference between Assistable and SoundHound?
SoundHound engineers and operates voice AI at massive vertical scale, from drive-thrus to in-car assistants to Fortune 500 contact centers. Assistable puts the whole stack behind a self-serve signup: buy a number in-app, publish a versioned agent, and take your first live call in minutes at published voice rates.
Is Assistable or SoundHound more cost effective?
Assistable bills usage on top of your plan. The voice base covers orchestration and TTS. LLM, applicable telephony, and enabled add-ons are charged separately; chat starts at $0.02 per AI message. See /pricing for the current rate card and any announced changes. SoundHound's published pricing model is quote-based (enterprise). The rate card explains the voice base and any additional charges for the providers and options you choose.
When should I choose SoundHound over Assistable?
SoundHound is the right call when you want a vendor to engineer, integrate, and operate the entire voice deployment. It owns its speech stack end to end, including the Polaris ASR foundation model, offers true edge deployment for in-vehicle and on-prem drive-thru hardware, and runs at proven vertical scale: voice AI in well over 10,000 restaurant locations, Casey's at more than 2,600 stores, and a platform it says automates over 10 billion conversations annually. Amelia also wraps a full contact-center suite around the AI, with escalation queues, live monitoring, and a human-agent copilot. If you are a global enterprise, restaurant chain, or automotive OEM that needs POS, hardware, or embedded integration done for you, and you have the budget and timeline for a sales-led, professional-services engagement, SoundHound has shipped that at a scale few vendors can match.
How fast can I get a live AI agent with Assistable?
Signup is self-serve. Onboarding creates your first assistant, grants $10 in usage credit, and lets you buy a US or Canadian local number in-app, so the first live call happens in minutes without a sales call. Full production rollouts run 2-3 days.

Fair is fair

When SoundHound is the right call

SoundHound is the right call when you want a vendor to engineer, integrate, and operate the entire voice deployment. It owns its speech stack end to end, including the Polaris ASR foundation model, offers true edge deployment for in-vehicle and on-prem drive-thru hardware, and runs at proven vertical scale: voice AI in well over 10,000 restaurant locations, Casey's at more than 2,600 stores, and a platform it says automates over 10 billion conversations annually. Amelia also wraps a full contact-center suite around the AI, with escalation queues, live monitoring, and a human-agent copilot. If you are a global enterprise, restaurant chain, or automotive OEM that needs POS, hardware, or embedded integration done for you, and you have the budget and timeline for a sales-led, professional-services engagement, SoundHound has shipped that at a scale few vendors can match.

Results

Take their word for it.

Real operators, verified reviews, and one 18-month evaluation that ended with 25,000 flawless calls.

Platform lifetime

m+managed conversations

Across voice, SMS, WhatsApp, and chat.

Reliability

% uptime

Production uptime, backed by SLA.

Speed

s median answer

From first ring to answered, on every channel.

Verified customer · 18-month evaluation

25,000 calls delivered flawlessly.

“After 18 months testing voice AI platforms including Bland.ai and Synthflow.ai… Assistable delivered flawlessly on over 25,000 calls in recent weeks. It checks all the boxes with built-in features that more mature platforms haven’t integrated yet.”

Maurice M.Verified customer

Backed by a Shark

“Assistable AI is redefining business efficiency.”

KHKevin HarringtonKevin HarringtonOriginal Shark, Shark Tank
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Trustpilot4.6/5 · 35 verified reviewsHighLevel4.5/5 · 126,000+ marketplace downloads
Marco GomezMarco Gomez
Melanie SegoviaMelanie Segovia
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Marco GomezMarco Gomez
Melanie SegoviaMelanie Segovia
Tyler NyeTyler Nye
George GivargisGeorge Givargis
Gordon GrantGordon Grant
Brian GodfreyBrian Godfrey
Carlos MacaspacCarlos Macaspac
Duncan MettsDuncan Metts
Rajesh LalwaniRajesh Lalwani
Amber KingAmber King
Jonathan FerrellJonathan Ferrell
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  • “I've tested a lot of AI and automation tools, and most fall apart once you try to scale. Assistable is the real deal.”
    Jamie WVerified Trustpilot review
  • “I have been using Assistable for about 10 months, and it has changed my business completely. The voice AI quality is unmatched.”
    Travis HolzemVerified Trustpilot review
  • “The conversational quality and flexibility are amazing. Top notch tech and service from the entire team.”
    Eric KnellerVerified Trustpilot review
  • “They make it so easy to get started with voice AI. The onboarding was smooth and the results were immediate.”
    Pam VinjeVerified Trustpilot review
  • “There is no better conversational AI voice bot. There are a ton of players in the market and Assistable leads.”
    Lowe SmithVerified Trustpilot review
  • “Assistable has been a game changer for my business and is way easier to use than any alternative I've tried.”
    Greg PfefferVerified Trustpilot review
  • “Assistable AI was the best decision we have made for our company in a long time. Excellent product and team.”
    Get Amplified MarketingVerified Trustpilot review
  • “Been using Assistable for several months and it has completely changed how our team handles inbound inquiries.”
    ATVerified Trustpilot review
  • “There is no better conversational AI voice bot. There are a ton of players in the market and Assistable leads.”
    Lowe SmithVerified Trustpilot review
  • “Assistable has been a game changer for my business and is way easier to use than any alternative I've tried.”
    Greg PfefferVerified Trustpilot review
  • “Assistable AI was the best decision we have made for our company in a long time. Excellent product and team.”
    Get Amplified MarketingVerified Trustpilot review
  • “Been using Assistable for several months and it has completely changed how our team handles inbound inquiries.”
    ATVerified Trustpilot review
  • “I've tested a lot of AI and automation tools, and most fall apart once you try to scale. Assistable is the real deal.”
    Jamie WVerified Trustpilot review
  • “I have been using Assistable for about 10 months, and it has changed my business completely. The voice AI quality is unmatched.”
    Travis HolzemVerified Trustpilot review
  • “The conversational quality and flexibility are amazing. Top notch tech and service from the entire team.”
    Eric KnellerVerified Trustpilot review
  • “They make it so easy to get started with voice AI. The onboarding was smooth and the results were immediate.”
    Pam VinjeVerified Trustpilot review

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