Case studies

Outcomes that prove the pattern.

Documented enterprise deployments — across telecommunications, aviation, banking, healthcare, logistics, retail, insurance, hospitality, and the public sector — showing the problems Mantle’s products are engineered to solve and the measurable return they produce.


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Real deployments, real numbers.

Click a product to see the industries it serves and the outcomes its class of solution is already delivering at enterprise scale.

Echo

AI voice and chat agents resolving the majority of customer conversations end to end — faster, at a fraction of the cost, and around the clock.

Echo in the real world — what AI voice and chat agents are already delivering across industries.

AI voice and chat agents have moved from experiment to infrastructure. Across telecommunications, aviation, banking, healthcare, logistics and beyond, they now resolve the majority of customer conversations on their own — faster, at a fraction of the cost, and around the clock.

The results below come from real, documented enterprise deployments. They show the problems AI agents solve and the measurable return they produce — the class of outcome Echo, Mantle’s AI voice and chat agent, is engineered to deliver for your business.

60–90%
of conversations resolved end to end by mature agents
10–15%
of live-agent cost, for voice automation
3×–9×
ROI within the first year, often paying back in months
24 / 7
capacity for hundreds of thousands of concurrent conversations

Telecommunications

Up to 70% lower cost per chat — and first-time resolution from 15% to 60%.

Telecom support is defined by enormous volume, endless repetition, and sharp, unpredictable spikes — billing questions, plan changes, outages, device setup. It is the ideal environment for an AI agent that can resolve issues end to end and escalate only what genuinely needs a person.

Vodafone

The problem

Twelve-plus countries, dozens of languages, and a relentless mix of billing, plan-change and technical-support volume. The legacy assistant could route queries, but couldn’t actually resolve them — cost per chat stayed high and customers still ended up with a human.

Solution

Deployment of an AI virtual assistant across more than a dozen countries and a wide range of languages, covering billing, plans and technical support. After moving to a generative AI engine, the assistant resolves issues end-to-end rather than passing them on.

−70%
cost per chat
15→60%
first-time resolution
+14 pts
online NPS
~90%
answer accuracy

BT Group / EE

The problem

A national consumer-telco footprint where chat and messaging volume kept climbing — with travel-prep, account, and tech-support journeys all bleeding into the same overloaded support queue.

Solution

An AI chat assistant now handles up to 60,000 customer conversations a week, with automation success on key journeys approaching 50%. A generative-AI-enhanced travel-prep experience halved the need for online chat and messaging support.

60K/wk
conversations handled
~50%
automation on key journeys
−50%
travel-prep support demand
+51%
YoY assistant usage

Openreach

The problem

A nationwide broadband network upgrade was about to confuse millions of customers — floods of inbound calls, missed engineering appointments, brand damage, and serious revenue at risk if rollouts stalled.

Solution

A proactive approach. Rather than waiting for confused customers to flood the contact center, AI agents reached out to confirm engineering appointments and guided customers through the changes in real time.

−35%
missed appointments
$10s of M
annual benefit
1.6→4.7
Trustpilot rating
300K+
reviews behind that rating

A1 Slovenia

The problem

The previous chatbot was a filter, not a resolver — it routinely lost context, escalated too much, and depressed both AI-handled and human-handled NPS scores. Mobile, internet and TV queries all funneled into the same broken funnel.

Solution

The static chatbot was replaced with a generative AI customer-service agent handling mobile, internet and TV support. The change was transformative across both AI-handled and escalated interactions.

+113 pts
NPS on AI-handled
+35 pts
NPS on escalations
53.5%
interactions resolved
−70%
human-escalation rate

Airlines & Aviation

16M+ conversations a year automated — and 800K/month at a single carrier.

Aviation lives with extreme volatility — weather, irregular operations, seasonal peaks. A human agent can hold only one conversation at a time, so phone queues collapse the moment a disruption hits. AI agents remove that concurrency ceiling entirely, rebooking, refunding and answering for hundreds of thousands of passengers simultaneously.

Lufthansa Group

The problem

Pandemic-era cancellations and rebookings overwhelmed every human channel. After the recovery, the same shape of disruption returned with every storm, strike and IT outage — multilingual passengers needing rebookings, refunds and alternatives within the same hour.

Solution

AI agents were stood up during the pandemic to absorb the overwhelming call volume, and the system became a permanent operational shock absorber — managing rebookings, refunds and alternative-flight recommendations across multiple languages over web and SMS.

16M+/yr
conversations handled
375K/day
peak during disruption
Multi-ling.
web + SMS coverage
Lower
avg. handle time

KLM

The problem

Customers expected to message the airline the same way they message anyone else — on WhatsApp, Messenger and SMS — but humans on those channels can’t scale, and slow response times were eroding loyalty.

Solution

An AI chat agent was deployed on the airline’s messaging channels, automating over half of incoming customer enquiries, while overall customer interactions grew 40% and response times became markedly faster.

>50%
enquiries automated
+40%
customer interactions
Faster
response time
Messaging
native channel mix

Frontier Airlines

The problem

Growing 15–30% a year, Frontier concluded that scaling a traditional phone center was neither affordable nor sustainable. Hold times were the single biggest sentiment killer, and adding agents linearly was a losing trade.

Solution

Customer service was moved to AI-supported chat, now automating 800,000 conversations a month. Far from harming sentiment, eliminating hold times produced the airline’s lowest average handle time in 5–6 years and a higher NPS than the phone era ever delivered.

800K/mo
conversations automated
5–6 yr
lowest AHT in years
Higher
NPS vs. phone era
15–30%
annual growth absorbed

Financial Services & Fintech

3B interactions at one bank, $40M profit lift at another — in year one.

Banking and fintech run on high volumes of routine, sensitive requests — balances, disputes, refunds, password resets — that must be handled securely and instantly. AI agents authenticate, retrieve and resolve these in seconds, freeing specialists for the conversations that truly need human judgement.

Bank of America

The problem

Tens of millions of customers, billions of authenticated requests a year — balances, transfers, disputes, statements — with strict security requirements and zero tolerance for slow service.

Solution

An AI virtual assistant resolves these requests in seconds with full authentication, and an internal version absorbs IT-desk traffic from employees too.

3B
client interactions
~50M
users on the assistant
98% / 48s
find-it rate / avg. duration
−50%+
internal IT-desk calls

Klarna

The problem

23 markets, 35 languages, BNPL questions that needed answers in under two minutes to keep CSAT and repurchase rates intact — scaling human agents to that surface area was financially impossible.

Solution

An AI chat assistant was deployed across 23 markets and 35 languages. In its first month it handled 2.3 million conversations — two-thirds of total chat — doing the equivalent work of 700 full-time agents.

11→<2 min
avg. resolution time
−25%
repeat inquiries
On par
CSAT vs. humans
~$40M
year-1 profit lift

Nordea

The problem

Four Nordic markets, each with its own language, banking norms and product mix — and customers expecting the same quick, fluent self-service across all of them.

Solution

AI chat agents now operate across four markets and sustain 90%+ in-scope resolution. In Norway the agent handles ~50K conversations a month with roughly half resolved by AI alone; in Finland in-scope resolution reaches 95%.

4
markets live
~50K/mo
Norway conversations
~50%
resolved by AI alone (NO)
95%
in-scope resolution (FI)

Union Bank of the Philippines

The problem

A high-volume retail banking population with growing digital expectations and a cost-to-serve that needed to come down without sacrificing customer experience.

Solution

An AI chatbot was deployed for self-service banking, reducing the cost of operating and serving clients by 51%.

−51%
cost to operate & serve
Self-serve
primary channel
24/7
availability
Digital
customer experience

Humm Group

The problem

BNPL customers ask the same handful of questions — due dates, payment splits, account access — in huge volumes. Funnelling them all to humans was burning agent time on work AI could handle better.

Solution

An AI virtual assistant was launched for the BNPL products, hitting 94% intent-recognition accuracy and a 50% autonomous resolution rate, also cutting average handle time across the wider team by filtering routine work away from humans.

94%
intent recognition
50%
autonomous resolution
−15%
team avg. handle time
BNPL
primary use case

Healthcare

From $2.4M ROI in year one to 57% less clinician inbox volume.

Patients call to book, reschedule, navigate and ask — and every minute on hold is access lost. AI agents answer around the clock, route intelligently, capture new patients, and lift the administrative burden off scarce clinical staff, turning the contact center from a pure cost center into measurable revenue.

Providence Health

The problem

Patient-portal inboxes had become a major driver of physician burnout — doctors fielding non-clinical billing and administrative questions all day, instead of practicing medicine. The volume was crushing.

Solution

Physician burnout was targeted directly. As patients type non-clinical messages into the patient portal, an AI agent intercepts and routes them — answering administrative and billing questions or directing them to the right team rather than a doctor.

160K+/mo
conversations & 106K+ tasks
300K
messages screened, 264 clinics
−57%
clinician inbox volume
~2×
faster patient answers

Endeavor Health

The problem

Prospective patients dropped off the web when they couldn’t self-serve scheduling, video visits, urgent care or provider search — and the contact center couldn’t pick up the slack at acceptable cost.

Solution

An AI assistant was used to guide patients to self-service scheduling, video visits, urgent care and provider search — capturing intent that would otherwise have been lost.

3× ROI
in its first year
$740K
patient-capture revenue
$300K
contact-center cost avoided
650/mo
new patients captured

OSF HealthCare

The problem

Patients couldn’t reach the right care, the right specialist or a same-day answer through traditional channels — revenue leaked, contact-center costs ran high, and weekend/overnight access was effectively zero.

Solution

An AI virtual assistant was deployed for patient access and navigation, available 24/7/365.

$2.4M+
ROI in a single year
$1.2M
contact-center cost avoidance
$1.2M
new-patient net revenue
24/7/365
always-on patient access

Memorial Healthcare System

The problem

Twelve disjointed legacy call centers, no single view of the caller, high abandonment, slow handle times, and a self-service floor stuck near zero.

Solution

All twelve centers were consolidated into a single AI-powered patient access center that authenticates callers and surfaces records automatically — so every agent (human or AI) starts the conversation already in context.

−69%
call abandonment (3× cut)
−24%
average handle time
50%
self-service rate
+30%
overall service levels

European Ophthalmology Group

The problem

A 12-week wait for an appointment was bleeding patients to competitors, the booking center was swamped, and clinicians were losing hours to scheduling and follow-up tasks they shouldn’t have been touching at all.

Solution

Deployment of AI voice agents for pre-operative scheduling and post-care follow-up — the calls that least need a human and most affect patient flow.

12→2 wk
time-to-appointment
−40%
calls to booking center
1,000+
clinician hours saved
+20%
clinical-pathway efficiency

Logistics & Supply Chain

80%+ deflection at UPS, 35,000 autonomous calls/day at DoorDash.

Logistics generates the same operational questions at staggering volume — shipment tracking, delivery exceptions, customs, scheduling. The answers usually live in structured systems an AI agent can retrieve and act on instantly, across both chat and voice.

UPS

The problem

Global shipment volume produces tens of thousands of monthly inquiries about tracking, customs, delivery exceptions and scheduling — with structured-system answers an AI can retrieve in milliseconds, if it’s integrated correctly.

Solution

A global AI virtual assistant is integrated into operational systems, understanding queries accurately across more than 200 distinct topics — from tracking to customs to delivery exceptions — and replying in seconds.

80%+
deflection rate
48–50K/mo
inquiries handled
96%
understanding accuracy
200+
distinct topics covered

DHL

The problem

Operational complexity stretched across customer chat, outbound customs and freight-invoice collection calls, cold-chain alerts, and warehouse picking — all hungry for productivity gains, all dragging down by manual effort.

Solution

AI was layered across the entire operation. An AI chat agent delivered efficiency gains within six weeks; AI voice agents now place outbound calls autonomously to collect customs duties and chase freight invoices, handling millions of voice minutes a year across 10+ live use cases — and even escalate cold-chain alerts themselves. Warehouse automation lifted picking productivity 30–180%.

6 wks
to chat ROI
M+ min/yr
voice automation
10+
live voice use cases
30–180%
picking productivity lift

Maersk

The problem

Global shipping clients across time zones needed answers in natural language at any hour — and the human limit of roughly five concurrent customers per agent capped how fast the support team could grow with the business.

Solution

AI chat support was introduced to serve global clients in natural language around the clock — breaking past the per-agent concurrency ceiling entirely.

−30%
customer-service costs
24/7
multilingual coverage
No cap
concurrent customers
NL
natural-language interface

DoorDash

The problem

Outbound merchant calls — for onboarding, order issues, and operational coordination — scaled badly with humans, and ramping up human teams to nationwide volume in weeks was simply impossible.

Solution

An AI voice agent was deployed for outbound merchant calls and scaled from zero to enormous national volume in six weeks — closing the gap to experienced human agents within three months.

35K+/day
autonomous calls
6 wks
zero to that volume
94%
vs. experienced humans
3 mo
to performance parity

Lion Parcel

The problem

Customers wanted to ask about parcel status, tracking, payments and FAQs on the messaging apps they already use — not a separate support portal — in volumes that human teams couldn’t answer in time.

Solution

A generative AI chat agent was put on WhatsApp, Messenger and Instagram for delivery status, tracking, payments and FAQs.

85%
incoming queries automated
3
social channels
Multi
intent coverage
Instant
response in-channel

Retail & E-Commerce

$150M+ saved annually at Alibaba and 300% lift in conversion at Decathlon.

Shoppers want instant answers and effortless help. Because a capable AI agent removes friction, it doesn’t just contain cost — it becomes a high-converting sales and loyalty channel.

Alibaba

The problem

Singles’ Day and other peaks produce concurrent customer-query volumes no human team can match — and every second of friction at peak is revenue and CSAT lost.

Solution

An AI customer-service agent now runs at peak scale, handling around 75% of customer queries at more than 2 million sessions a day during high-demand periods.

75%
of customer queries
2M/day
peak sessions
$150M+/yr
in annual savings
+25%
customer satisfaction

Carrefour

The problem

Strategic decisions like new-store siting waited weeks for hand-built market and financial studies, while marketing teams chased customer acquisition at unsustainable cost-per-acquisition figures.

Solution

Application of agentic AI well beyond support. An internal AI agent produces complete market and financial studies for new store locations in two minutes (formerly weeks), while marketing-AI models reshape acquisition economics.

2 min
new-store market study
+45%
new customers captured
+50%
LTV return on ad spend
−34%
cost per acquisition

Decathlon

The problem

Half a million customer interactions a year were treated as cost; identifying customers, hitting resolution SLAs, and turning chat into a marketing-opt-in and revenue stream all needed an upgrade.

Solution

An AI conversational commerce assistant was deployed, handling 500K+ interactions a year — turning what was a cost center into a high-converting sales and loyalty channel.

74%
customers identified instantly
79→92%
resolution SLA
93% / $91
marketing opt-in / avg. purchase
+300%
conversion vs. traditional ads

Mister Spex

The problem

Most callers wanted the same answer (“where is my order?”), and every call started with 30 seconds of authentication and context-gathering that ate human-agent capacity.

Solution

AI voice and chat agents were used to verify callers automatically and fully automate over half of WISMO queries — saving setup time even on the calls that still routed to a human.

70%
callers verified by AI
52%
“where is my order?” auto-resolved
−30s
handle time pre-saved per call
Hybrid
voice + chat coverage

Insurance

2-second claim settlement and 96% of FNOLs handled with no human.

Insurance turns on speed and accuracy at the two highest-stakes moments: buying a policy and filing a claim. AI agents compress both from days to seconds.

Fortune-100 insurer

Name withheld at the client’s request
The problem

Nationwide policy and claims demand — tens of millions of calls a year — with strict regulatory requirements and no way to scale humans to match either volume or compliance.

Solution

A single AI agent now runs nationwide, capable of handling up to 20 million calls — absorbing the demand without expanding human headcount.

20M
call capacity, single agent
Nationwide
deployment
No
added headcount needed
Compliant
regulated workflows

Lemonade

The problem

Insurance buying and claims-filing both took days through traditional channels, killing conversion at onboarding and trust at settlement — the two moments that matter most.

Solution

An AI chat agent completes onboarding and a quote in under 90 seconds, and an AI claims agent has settled a claim in just 2 seconds — with no human involvement at all.

<90s
onboarding + quote
2 sec
fastest claim settled
96%
first notices of loss, no human
55%
claims end-to-end automated

Travel & Hospitality

70% of guest calls answered by AI — and $140K/month revenue recovered.

Missed calls are missed revenue. AI voice agents answer every one, book directly, and scale across locations without adding staff.

Golden Nugget Hotels & Casinos

The problem

High-intent reservation calls and switchboard volume were either going unanswered or pulling the team off other work — every missed call a potential booking lost to a competitor.

Solution

An AI voice assistant was deployed on both reservation and switchboard lines — completing reservations directly within two months of launch.

34%
reservation-line calls AI
87%
switchboard calls AI
300+/wk
reservations completed
2 mo
to that volume

140-venue restaurant group

Name withheld at the client’s request
The problem

A 30% missed-call rate across busy dinner services was bleeding bookings and walk-in conversion. Adding staff to phones isn’t economic for restaurants — the calls had to be answered without people.

Solution

An AI voice agent was deployed and now handles 70% of all guest calls, recovering revenue previously lost to the missed-call rate and scaling from 6 sites to 140.

70%
of guest calls handled by AI
6→140
sites scaled
30%
prior missed-call rate
Recovered
previously lost revenue

Travel-services operator

Name withheld at the client’s request
The problem

A high share of inbound calls were low-value installment-payment chases — eating agent time that should have been spent on higher-value selling and service.

Solution

An AI agent was deployed that autonomously handles the bulk of installment-payment calls and reshapes the economics of every interaction.

−30%
call volume
−20%
escalations
+15%
revenue per call
76%
payment calls auto-handled

Hospitality operator

Name withheld at the client’s request
The problem

High-volume phone reservations were the single biggest channel — but staffing it for 24/7 coverage was prohibitive, and missed booking calls translated straight to lost monthly revenue.

Solution

An AI voice agent now books reservations 24/7 directly over the phone — converting calls the team would otherwise have missed into recurring monthly revenue.

3,800+/mo
reservations booked
$140K/mo
monthly revenue
24/7
always-on coverage
Voice
primary channel

Utilities

2M+ conversations a year — with a +37 live-chat NPS intact.

Utility customer contacts — billing, meter, account changes — are high-volume, high-repetition, and have to be resolved without making customers feel processed. AI agents can carry that load, fast, while preserving service quality.

E.ON

The problem

High-volume utility customer contacts — billing, meter, account changes — coming in across chat and voice channels, all needing fast resolution without losing the NPS-positive feel of a real conversation.

Solution

A portfolio of AI chat and voice agents now covers the bulk of customer contacts — while sustaining a strong +37 NPS on live chat.

2M+/yr
conversations handled
70%
portfolio automated
45%
of all customer contacts
+37
NPS on live chat

Technology & SaaS

96%+ of inquiries resolved with no human — and first response cut from 15 min to 23 sec.

Software users expect near-instant answers against fast-evolving products. AI support agents resolve the overwhelming majority of inquiries directly, while compressing response times by orders of magnitude.

Notion

The problem

A million-plus annual support inquiries against an evolving product, with users expecting near-instant answers and zero patience for queues.

Solution

An AI support agent resolves the overwhelming majority of inquiries with no human involvement — freeing the support team to focus on edge cases, escalations and product feedback.

96%+
inquiries resolved no-human
~1M/yr
inquiries handled
Instant
first response
2×
support throughput

Enterprise SaaS vendor

Name withheld at the client’s request
The problem

A first-response time stuck at 15 minutes was driving churn risk and CSAT damage across the customer base — and AI resolution rates were stalling well below their potential.

Solution

An AI agent cut first response time from 15 minutes to 23 seconds — a 97% reduction — while doubling AI resolution rate.

15m→23s
first response time
−97%
response-time cut
2×
AI resolution rate
SaaS
customer-support use case

Public Sector

35M+ inquiries answered — and call volumes pushed to a 5-year low.

Citizen services run at enormous scale and on small staff budgets — every missed call has real-life consequences. AI virtual assistants give 24/7 access at a fraction of contact-center cost.

National immigration service

Name withheld at the agency’s request
The problem

Citizens trying to navigate complex immigration processes at huge volume — the kind of demand human call centers cannot answer in reasonable time, and where every missed call has real-life consequences.

Solution

An AI virtual assistant has answered tens of millions of inquiries from a multimillion-user base, at a strong success rate — offering citizens around-the-clock access where humans simply cannot scale.

35M+
inquiries answered
11M+
unique users served
91%
success rate
24/7
citizen access

National government services agency

Name withheld at the agency’s request
The problem

Inbound citizen call volumes had reached unsustainable levels across 80 different agency websites, with no single, consistent self-service experience and rising cost pressure on every channel.

Solution

A single AI chat assistant was rolled out across 80 agency websites, deflecting routine inquiries away from phone lines and giving citizens a consistent experience wherever they land.

80
agency websites covered
50%
call deflection
5-yr low
overall call volumes
One
consistent citizen UX

The economics

10–15% of live-agent cost, 3×–9× ROI in year one.

Across every one of these industries, the same pattern holds: AI voice and chat agents don’t just improve service — they change the unit economics of every conversation.

10–15%
of live-agent cost — per voice-automated conversation
60–90%
of conversations resolved end to end by mature agents
3×–9×
ROI in year one, often paying back in months
100K+
concurrent conversations a single agent can hold

Just as important, the strongest results consistently come from agents built to resolve, not merely deflect. The deployments that move NPS, protect revenue and earn customer trust are the ones that complete real tasks against live systems — booking, refunding, rescheduling, authenticating — rather than simply answering questions and ending the conversation.

Why Echo

Echo is Mantle’s AI voice and chat agent, engineered to deliver exactly this class of outcome:

Echo works across voice and chat — phone, web chat, WhatsApp and messaging — from a single brain, so customers get one consistent experience on every channel. It is built to resolve, not deflect, completing real tasks against your live systems rather than stopping at FAQs. It is enterprise-grade, with secure authentication, multilingual coverage, backend execution and clean escalation to your team the moment human judgement is needed. And it goes live in weeks, not quarters, improving continuously as it learns your business.

See what Echo resolves for your business. Bring us your highest-volume conversations, and we’ll show you — with your numbers — what Echo can take off your team’s plate and what it returns to your bottom line.

More product case studies coming soon — Resolve, Forge, Praxis, Pulse MRO, Vector, Constellation, Conduit, and Mirror.