Ranking updated 1 September 2026Listings reviewed 30 August 20267 agencies reviewedHow we rank
Ecommerce automation spans order operations, support triage, returns and merchandising data. The agencies below have worked with the platform and fulfilment stack rather than only the marketing layer.
Every agency below appears in our full ai voice agencies ranking and states ecommerce businesses among the sectors it works with. Listings are ordered by their position in that ranking.
Teams that treat a phone line as production infrastructure and want latency, evaluation and monitoring specified before launch rather than discovered afterwards.
Contact centers and enterprises with an existing PBX or dialer that need an agent placed inside the estate they already run rather than a replacement for it.
Enterprise teams that want an agent running in production with orchestration, tool access and tracing named up front, and a fixed-budget pilot before committing to a full build.
Companies already buying automation or internal tools from a well-reviewed studio, who want a voice agent added by a team that already knows their systems.
Buyers with their own technical lead who need SIP and VoIP engineering hours on a voice build, and are comfortable directing an hourly offshore team.
Ahmedabad, IN
Not published
From $1k
The full reviews
The table is the summary. Below, every agency gets the complete assessment: what it is genuinely good at, where it falls short, and the facts behind its position.
Best forTeams that treat a phone line as production infrastructure and want latency, evaluation and monitoring specified before launch rather than discovered afterwards.
Softcery is the reference point for what a serious voice engagement should disclose before anything is signed. Latency is published as a budget with each stage attributed, the telephony and speech vendors are named rather than hidden behind a platform, and the service is structured as advise, then build, then operate, which matches how phone systems actually fail. The gap is commercial rather than technical. No price appears anywhere on its own site, the three-part structure means the real number only emerges after scoping, and the independent record is 12 Clutch reviews, a thinner base than several less specialized firms on this page carry. A buyer who needs a figure approved before a scoping call will not find one here.
Pros
Publishes a component-level latency budget from its own production traffic, including a p95 figure and a stall rate
Names the full stack, from LiveKit, WebRTC and SIP to Deepgram, Cartesia and Grafana monitoring
Names five clients and runs two live demos a buyer can call rather than watch
Publishes reference on-premises hardware at $4,000 to $12,000 for buyers who cannot send audio off site
Cons
Publishes no price of its own, so the only planning figure is the $10,000 minimum Clutch displays
The advise, build and operate structure means total cost only becomes clear after scoping
Twelve Clutch reviews is a thin independent record next to the larger review bases elsewhere in this ranking
HQ
Tallinn, Estonia
Team
11-50
Pricing
$10,000+ minimum, $50-$99/hr (Clutch-displayed); own site sells advisory on an availability retainer, build work per statement of work, and operations on a retainer, with no figures published
Best forBuyers who want a latency figure and a cost per connected minute in writing early, and who do not need to know which infrastructure the work runs on.
DestiLabs gives a buyer two of the three numbers that decide a voice project, latency and cost per connected minute, and pairs them with the larger of the two 5.0 Clutch scores on this page. What it withholds is the third. Nowhere does it name a telephony provider, a speech vendor or an orchestration framework, so there is no way to judge whether 1.2 seconds was achieved on infrastructure that would survive your call volume, and no way to assess how much of the build would transfer if the relationship ended. Its self-reported scale also disagrees between sources, at 50 projects and $20M of client revenue on its own homepage against 200 projects and $100M on its DesignRush profile. Treat the published latency as the opening of a technical conversation rather than a specification.
Pros
Publishes end-to-end latency and cost per connected minute on two voice case studies
Clutch shows 5.0 from 23 reviews, the larger of the two perfect scores in this ranking
Clutch publishes a $10,000 entry point and a $50 to $99 hourly band
Cons
Names no telephony, speech or orchestration vendor anywhere, so the published latency cannot be tied to a stack
Self-reported scale disagrees between sources: 50 projects and $20M of client revenue on its own site against 200 projects and $100M on DesignRush
Voice sits inside a menu that also covers computer vision and generative imagery
Publishes its own best-voice-agency listicles, which is a self-promotion signal on a page a buyer might otherwise read as research
HQ
Tallinn, Estonia
Team
11-50
Pricing
$10,000+ minimum, $50-$99/hr (Clutch-displayed); DesignRush instead shows a $10,000-$25,000 minimum and $70/hr
Best forContact centers and enterprises with an existing PBX or dialer that need an agent placed inside the estate they already run rather than a replacement for it.
For a buyer whose problem is a working contact center that now needs an AI agent inside it, Call Sandwich is the clearest fit on this page: it is the only firm here shipping a product whose job is to bridge an existing PBX to an agent. Nearly everyone else assumes a greenfield line; this one assumes a dialer, a PBX and a queue that already exist, and it has built and sells the SIP plumbing to bridge them. The evidence problem is severe. Not one client is named, the testimonials are anonymized to job titles, the logos on its partner profile do not resolve, and the advisory board page renders unsubstituted template placeholders, so 200 enterprise clients and 10 million calls stand on the company's word alone. Its agent layer also sits on a single vendor, and its own SIP product exists to route traffic into that vendor, so single-supplier risk should be priced into any contract.
Pros
Integrates with legacy contact center estates by name, including ViciDial, Avaya, Genesys and NICE inContact
Ships its own SIP switch connecting an existing PBX to a voice agent, and states official Jambonz partner status
Holds the top tier and the longest partner tenure of any Retell AI partner in this ranking
Cons
Names no client anywhere and anonymizes its testimonials, so 200 enterprise clients and 10 million calls rest on its own word
The agent layer sits on a single vendor, and its own SIP product routes traffic into that same vendor
Publishes no price and no team size, and no independent review profile was located
Its advisory board page renders unsubstituted template placeholders, so no advisor is actually named
Best forEnterprise teams that want an agent running in production with orchestration, tool access and tracing named up front, and a fixed-budget pilot before committing to a full build.
Master of Code Global is the right choice if you want an agent in production rather than a proof of concept, and you want to see how it will be debugged before you sign: it is the only firm on this page that names an observability layer alongside LangChain, LlamaIndex, MCP, Bedrock and Vertex, and it runs its own open source orchestration framework. The 30-day fixed-budget pilot gives a priced way to test the working relationship, and 37 Clutch reviews at 4.7 offer more to check than the small five-star samples further down. Where it falls short is the small end of the market and its origin: the practice grew out of conversation design, which Clutch still records at 40% of technical focus, and a $25,000 floor at a 200 plus person firm serving Tom Ford, Burberry and T-Mobile means a modest budget is unlikely to get senior people. It sits first because specialization fit and technical depth are the criteria we weight hardest, and no other record here evidences both this concretely.
Pros
The only record in this ranking that names an LLM observability and tracing layer, LangFuse, alongside LangChain, LlamaIndex and MCP
A 30-day fixed-budget AI pilot gives a priced first step above the $25,000 minimum
4.7 from 37 Clutch reviews, and the earliest founding year published by any firm in this ranking at 2004
Cons
Chatbot and conversational AI account for 40% of technical focus per Clutch; autonomous multi-step agent work is a newer extension of a conversation design practice
A $25,000 floor at a 200 plus person agency oriented to brands such as Tom Ford, Burberry and T-Mobile; a smaller engagement risks junior staffing
Headline figures including 1B plus users engaged, NPS 56 and CSAT 9.2 are self-reported, and the founding year appears on Clutch but not on the company's own about page
HQ
Redwood City, United States
Team
Not published
Pricing
$25,000+ minimum project, $50-$99/hr (Clutch-displayed); sells a fixed-budget 30-day AI pilot with a four to five person team, price not published
Best forCompanies that need a price agreed before work starts, and are buying product engineering with a voice component rather than a voice specialist.
RaftLabs is the clearest firm on this page about what a project will cost, and for a buyer who needs a number approved before a scoping call, that counts for something real. The service description also shows awareness of what breaks a phone deployment, including interruption handling, fallback and retry logic. It ranks low for two reasons. Voice is one line on a general product menu, the flagship AI agent service page names no voice vendors at all, the voice client is not named, and much of the voice content on the site is listicle material aimed at search rankings rather than at showing how anything was built. Separately, its own copy claims a 4.9 rating across 50 or more verified reviews, while the Clutch profile it cites displays 18. The score matches; the review count does not, and pricing transparency and public accountability are two of the five criteria this ranking is decided on.
Pros
Publishes fixed price bands on its own site, from $20,000 to $50,000 for a single-workflow agent
Bills fixed price with no hourly billing, so scope changes are negotiated rather than metered
Its voice service description covers interruption and fallback handling, transcription and SMS retry logic
Cons
Its own copy claims a 4.9 rating across 50 or more verified reviews, while the Clutch profile it cites displays 18
Voice is one line on a general product development menu, and the flagship AI agent page names no voice vendors
The voice client is not named, and much of the voice content is listicle material aimed at search rankings
Its about page displays logos including Vodafone, Nike and Microsoft that are implausible as direct clients at this size and price
HQ
Dublin, Ireland
Team
Not published
Pricing
Fixed-price only, no hourly billing: single-workflow agent $20,000-$50,000 over 4-8 weeks, multi-agent systems $60,000-$150,000 over 10-16 weeks, MVP work from about $10,000; Clutch shows a $10,000+ minimum and $25-$49/hr
Best forCompanies already buying automation or internal tools from a well-reviewed studio, who want a voice agent added by a team that already knows their systems.
Sidetool is a well-reviewed automation and Bubble studio that added voice recently, and this ranking reflects that order. The independent record is genuinely good, 4.8 across 28 reviews is one of the larger verified bases in this category, and the multilingual transfer support recorded on its vendor's directory is more than several voice-only firms here document. But a buyer choosing on voice has almost nothing to evaluate: no case study involves a call, no telephony, latency or call evaluation detail is published anywhere, and the business is 40% mobile app development by Clutch's own breakdown. The pricing picture is contradictory too, with a flat monthly subscription on its own site against a $10,000 project minimum on Clutch, which are different commercial models rather than different numbers. It belongs in this directory; it does not belong near the top of a voice ranking.
Pros
Clutch shows 4.8 from 28 reviews, one of the larger verified review bases in this ranking
Retell AI's directory records warm and cold call transfer with English, Portuguese and Spanish support
States a six to ten week path from kickoff to deployment
Cons
Not one published case study involves a phone call
Clutch's own breakdown puts 40% of the business in mobile app development and 15% in AI
No telephony, latency or call evaluation detail is published anywhere
Its own site sells a flat monthly subscription while Clutch shows a $10,000 project minimum, two different commercial models
HQ
Doral, United States
Team
Not published
Pricing
Own site sells a flat monthly subscription for unlimited queued automations with no figure published; Clutch shows a $10,000+ minimum project size and $50-$99/hr
Best forBuyers with their own technical lead who need SIP and VoIP engineering hours on a voice build, and are comfortable directing an hourly offshore team.
On paper Samcom has telephony depth that several higher-ranked firms lack, and it is one of very few agencies in this category willing to publish what an hour of its time costs. Two things pull it down. Its own site advertises a Clutch score of 4.9 from 74 reviews, while the Clutch profile for this company, confirmed by domain and location and opened twice during research, displays zero client reviews. An unreviewed profile is an absence of data rather than a low score, but the advertised figure does not match the source it cites, and public accountability is one of the five criteria this ranking is decided on. The second is the shape of the engagement: hourly rates at commodity levels, a $1,000 floor, no client named anywhere and a menu running from SIP stacks to Shopify is staff augmentation rather than a delivered voice system. A buyer who already has an architect and needs VoIP hours may do well here; a buyer who wants a system owned by the supplier should look higher up this page.
Pros
Names carrier-grade SIP stacks including Asterisk, FreeSWITCH, Kamailio and OpenSIPS alongside LiveKit and Pipecat
Publishes its own hourly rate card, which almost no agency in this category does
Clutch shows a $1,000 minimum project size, the lowest published entry point in this ranking
Cons
Its site advertises a Clutch score of 4.9 from 74 reviews, while the Clutch profile for this company displays zero reviews
Names no client anywhere, so sub-500ms latency, 60,000 calls a day and 500 projects are unattached claims
Hourly billing at commodity rates with a $1,000 floor is a staff-augmentation model rather than a delivered voice system
Founding year disagrees across three sources and team size disagrees between its site and Clutch, so neither is recorded
HQ
Ahmedabad, India
Team
Not published
Pricing
Publishes hourly rates: VoIP developer $25-$55/hr, AI developer $35-$75/hr, VoIP support engineer $18-$38/hr; Clutch shows $25-$49/hr and a $1,000+ minimum project size
