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Crestavs Callvu

Cresta is contact center AI: real-time coaching for human agents, conversation intelligence, supervision of human and AI agents, AI agents for routine conversations and a new back-office agent. Callvu is the Completion and Compliance Layer: it takes regulated tasks out of the call and runs them as a governed process end to end through the back office to the system of record, with a deterministic orchestrator enforcing every regulation on every step. Cresta improves the conversation; Callvu completes the regulated work.

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At a glance

Runtime compliance enforcement

CrestaPartial.

CallvuYes.

Front-to-back-office handoff

CrestaPartial.

CallvuYes, end to end: prefill from the core, classify the work, chase and verify documents, route decisions to the Decision Desk and write back to the system of record.

The fair version

What Cresta is built for.Sourced from their own pages.

Cresta describes itself as an AI operating system for customer experience ^[1]. AI Agent handles voice and digital conversations autonomously and connects to CRM, billing and scheduling systems to complete tasks ^[2]. Agentic Assist gives human agents real-time hints, checklists and compliance triggers ^[6]. The Agent Operations Center supervises live human and AI conversations ^[5]. Deputy Agent, launched in October 2026, works on refund requests, transaction disputes and insurance claim appeals after the call, saving its progress while it waits for a document, a response or an approval, gathering the case details and evidence for a reviewer, and keeping an audit trail of actions and approvals ^[4]. Cresta describes its AI defenses as deterministic flows for sensitive actions such as authentication and transactions, rules in prompts and orchestration code, and supervisory classifiers that can halt a response ^[3], and lists its certifications on its trust page ^[10]. It integrates with major contact center platforms and CRMs ^[7]. Financial services and insurance customers include a Fortune 500 bank ^[11] and others on its industry pages ^[8]^[9]; Cresta also names lenders such as Snap Finance, Aqua Finance and Oportun, and telecom customers Verizon and Cox Communications ^[12]. On November 2, 2026, Salesforce signed a definitive agreement to acquire Cresta, to be paired with Service Cloud; the deal is expected to close in Salesforce's fiscal 2028 first quarter, subject to regulatory approval, and Cresta will keep supporting the contact center and telephony platforms customers use today ^[13].

When to choose which

Two different jobs.Pick the one you need.

When to choose Cresta

Choose Cresta when the goal is better contact center conversations: real-time coaching for human agents ^[6], analysis of every conversation, supervision of human and AI agents ^[5], and AI agents for routine conversations ^[2], on top of the contact center platform you already run ^[7].

When to choose Callvu

Choose Callvu when structured, regulated tasks such as payments, consents or account changes should leave the call and run as a governed process. Callvu orchestrates the work, routes it by work type, skill and due date, applies rules and policies and manages every decision, and it runs the handoff in the same process with five moves: it prefills from what the core already knows, classifies each request the moment it lands, chases and verifies documents from customers and outside parties on a clock, routes decisions to the Decision Desk, and writes the result back by API.

Guardrails are not runtime enforcement. Cresta's AI Agent acts in CRM, billing and scheduling systems ^[2], constrained by deterministic flows for some actions, prompt rules and supervisory classifiers ^[3], and Deputy Agent works on back-office requests with approvals the business defines ^[4]. Guardrails limit and record what an AI does while it does the work. Even with guardrails, an AI that runs the process can write wrong data to the system of record, take a path that is not in the workflow, or act compliantly most of the time rather than every time. Callvu does not let AI run the process. A deterministic orchestrator decides every next step and enforces every control before the step runs; AI, yours or Callvu's, only starts a process or evaluates it. Every run is recorded in a Decision Trace and an Audit Trace.

Side by side

The verifiable facts.Nothing else.

Every cell about Cresta is sourced from its own public pages. Runtime enforcement and the handoff lead the table because they are where the two differ most.

Capability		Cresta
Primary role	Completion and Compliance Layer between every front door and the system of record	Contact center AI: agent guidance, conversation intelligence, AI agents and operations ^[1]
Runtime compliance enforcement	Yes. A deterministic orchestrator runs every step and decides the path; AI never runs the process. Every regulation and company policy is enforced on every step while the work runs, whether a person or an AI started it; a step that fails a control does not run. A Decision Trace and an Audit Trace for every run	Partial. Deterministic flows for sensitive actions such as authentication and transactions, rules in system prompts and orchestration code, and supervisory classifiers that can halt a response; for human agents, compliance guidance and triggers ^[3]
Front-to-back-office handoff	Yes, end to end: prefill from the core, classify the work, chase and verify documents, route decisions to the Decision Desk and write back to the system of record. Back-office planning starts the moment the front end starts	Partial. Deputy Agent (launched October 2026) works on refund requests, transaction disputes and insurance claim appeals after the call, saving its progress while it waits for a document, a response or an approval, and gathering the case details and evidence for the reviewer the business names. Document verification on a clock, a deterministic write back to the core and enforcement of every rule on every step are not documented ^[4]
AI guardrails vs deterministic execution	Deterministic execution, not guardrails: AI never runs the process. A deterministic orchestrator executes every step and enforces every control before it runs, so nothing unchecked reaches the system of record and no step outside the workflow can happen	AI Agent acts in CRM, billing and scheduling systems through function calling and MCP, with system-level guardrails and supervisory models ^[2]
Human agent guidance	Not a coaching tool; moves structured regulated tasks off the call to a guided, process-controlled screen or the backend	Yes: real-time hints, checklists, compliance triggers and live summaries ^[6]
Evidence	Every action assessed before it runs by six evaluator agents, whether a person or an AI started it, with an immutable Decision Trace and Audit Trace pushed in real time to GRC and BI tools	Analysis of every conversation, quality management, and an audit trail of Deputy Agent actions and approvals ^[4]
Contact center integrations	Genesys and NICE CXone; Callvu is not a contact center and runs the regulated process behind it	Five9, Genesys, NICE, Amazon Connect, Avaya, Cisco and others, plus Salesforce, Dynamics, Pega and ServiceNow ^[7]

Using both together

Keep what works.Add the layer that finishes it.

Cresta can keep coaching agents and analyzing conversations. When a regulated task comes up on the call, it moves into a Callvu process on a guided, process-controlled screen or in the backend, and Callvu completes it to the system of record with every step enforced. Callvu can also run the whole process on its own, from any door.

Proof

Live in production.At regulated enterprises.

AT&T

55,000 agents
Close to 100 processes on Callvu
Payment abandonment from 40% to 8%
Handle time down 23%
12 workflows in 6 weeks

Callvu helps us transform how we connect with customers across critical touchpoints. We quickly deployed digital experiences that reduce service volume, improve customer satisfaction and automate low value service tasks. We were able to implement meaningful changes with minimal IT strain or compliance headaches.David C. Williams, AVP Automation, AT&T

Banca Transilvania

73% of inbound call traffic migrated to digital self-service
3M+ support calls moved to digital self-service
100+ workflows automated
Loan decisions 4 days faster

Callvu helped us migrate 73% of our inbound call traffic to digital self-service. They transformed our customer experience in ways we didn't think were possible. That's no easy task when you're dealing with everything that arises in consumer banking.Anca Radu, Digital Project Manager, Banca Transilvania

Phoenix Insurance

100+ processes live in under 3 months
All core systems integrated in 4 weeks
40% fewer agent-led calls
90%+ completion without human help
$3.5M+ annual service savings

FAQ

The questions buyers ask.Answered plainly.

Does Cresta enforce compliance at runtime?

Cresta uses deterministic flows for sensitive actions such as authentication and transactions, rules in prompts and orchestration code, and supervisory classifiers that can halt a response; for human agents it gives compliance guidance in real time. Those constrain AI agents and guide people while they conduct the conversation and choose actions. In Callvu, a deterministic orchestrator decides the path and runs every step, AI never runs the process, and every regulation and company policy is enforced on every step before it executes.

Cresta Deputy Agent vs Callvu for back-office work: what is the difference?

Deputy Agent is an AI agent that works on refund requests, transaction disputes and insurance claim appeals after the call, pausing for documents or approvals and gathering evidence for a reviewer, with an audit trail of actions and approvals. In Callvu, no AI performs the back-office steps: a deterministic orchestrator runs the process, chases and verifies documents on a clock, sends decisions to reviewers in the Decision Desk and writes the result to the system of record, with every control enforced before each step runs.

Can Cresta and Callvu be used together?

Yes. Cresta can keep coaching agents and analyzing conversations. When a regulated task such as a payment, consent or account change comes up, it moves off the call into a Callvu process on a guided screen or in the backend, and Callvu completes it to the system of record.

Are code-backed AI agent flows the same as deterministic execution?

Not quite. Deterministic flows for individual actions make those actions reliable, but when an AI agent decides which flow to run and when, it can still skip a step, take a path that is not in the workflow, or write data the process did not intend. Callvu keeps the whole path deterministic.

How fast can Callvu go live behind a contact center?

Callvu builds the process for you and launches in a few weeks, with white-glove implementation included in the license. AT&T deployed 12 workflows in 6 weeks.

Sources

Every claim,sourced.

Last verified: 2026-11-05. Facts about other vendors come from their public pages, filings and press, as of that date. Vendor names are trademarks of their owners. To report an error, contact Callvu.

See it on your process.

Bring one regulated process. We will show you the handoff and runtime enforcement on it.

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