# Assistable vs SoundHound AI

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 $0.07/min all-in.

- **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 at $0.07/min all-in, with no platform fee and no seat fees.
- **SoundHound:** 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.

## 01. Time to first live 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.

- 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

**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.

## 02. Infrastructure and telephony

**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.

- 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

**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.

## 03. Version control and rollback

**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.

- 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

**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.

## 04. Call routing and transfers

**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.

- 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

**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.

## 05. Outbound at scale

**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.

- 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

**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.

## 06. Observability and QA

**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.

- 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

**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.

## Side by side

### Getting live

| | Assistable | SoundHound |
| --- | --- | --- |
| Self-serve signup | Yes | Smart Answering (SMB) only |
| Time to first live call | Minutes, in one sitting | Sales-led engagement for enterprise |
| Published deploy timeline | 2-3 day deploys | Not published |

### Telephony and routing

| | Assistable | SoundHound |
| --- | --- | --- |
| Buy phone numbers in-app | Yes | Not documented, forwarding-based |
| Warm transfer with fallback hunting | Yes | Not publicly documented |
| Time-based routing | Tag rules with active hours | Selective Call Forwarding (SMB) |

### Agent operations

| | Assistable | SoundHound |
| --- | --- | --- |
| Version history and rollback | Yes | Not publicly documented |
| Outbound campaign engine | A/B splits, windows, retries | Outbound claimed, no tooling documented |
| Automated QA | LLM judge on every call | Analytics and Learnings dashboards |

### Pricing

| | Assistable | SoundHound |
| --- | --- | --- |
| Voice | $0.07/min all-in | Quote-based for enterprise |
| Messages | $0.02 each | Not published |
| Entry point | Free signup, pay as you go | Smart Answering $29.99/mo, first 200 calls, then $0.20/call |
| Platform and seat fees | None | Not published |

## 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.

## FAQ

**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 $0.07/min all-in.

**Is Assistable or SoundHound more cost effective?**

Assistable is usage-based at $0.07 per minute for voice, all-in, and $0.02 per message, with no platform fee, no seat fees, and free pay-as-you-go signup. SoundHound's published pricing model is quote-based (enterprise). Assistable bundles telephony, model, and voice into one per-minute rate, so there are no per-component add-ons to reconcile.

**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.

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Source: https://www.assistable.ai/compare/soundhound