Cresta

Cresta is a Mountain View / Sunnyvale, California contact center AI company spun out of the Stanford AI Lab and founded in 2017 by Zayd Enam, Tim Shi, and Sebastian Thrun. The platform unifies human and AI agents for the enterprise contact center across voice, chat, and SMS, combining real-time agent assist, autonomous voice and digital AI agents, conversation intelligence, a knowledge agent, and automated quality management. Cresta runs a multi-model architecture composed of 20+ large and small language models, fine-tuned on customer-specific transcripts and synthetic data, with enterprise guardrails, supervisory models, and a no-code orchestration surface. The AI Agent supports API-based function calling and Model Context Protocol (MCP) for standardized tool access. Voice integrations span Five9, Genesys (Cloud CX and Engage), NICE CXone, Amazon Connect, Twilio Flex, Talkdesk, 8x8, Vonage, Gladly, TCN, RingCX, Avaya Infinity, Cisco UCCE/PCCE/UCCX, and SIPREC across Oracle, Ribbon, Avaya SBC, and Cisco CUBE via SIP, PSTN transfer, CCaaS native streaming, WebSocket, gRPC, and raw RTP. Cresta is privately held with $270M+ raised across rounds led by Greylock, Andreessen Horowitz, Sequoia, and Tiger Global, with strategic investors including Genesys, Five9, Accenture, Comcast, Qualcomm, JP Morgan, and Workday Ventures. The Cresta API and SDK are private and gated behind a customer / partner engagement; there is no public OpenAPI specification, no public SDK release, and no public developer self-service portal.

Kin Score

This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.

How we profile Cresta

Each block below is one kind of artifact we hold for Cresta. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.

Features 19

The notable capabilities this provider advertises, captured as structured features so they can be searched and compared instead of read one landing page at a time.

Notable capabilities this provider offers.

Cresta AI Agent — autonomous voice, chat, and SMS agents resolving end-to-end across 30+ languages

Agent Assist — real-time AI guidance, knowledge surfacing, and next-best-action for live human agents

Conversation Intelligence — automated analysis of 100% of customer conversations for insight and revenue surfacing

Knowledge Agent — proactive real-time answer retrieval from enterprise knowledge bases

Quality Management — automated QA scoring across 100% of contact center conversations

Multi-model architecture combining 20+ large and small language models tuned for contact center tasks

Fine-tuning on customer-proprietary transcripts plus purpose-built synthetic datasets

No-code Discover / Build / Test / Deploy / Optimize lifecycle for AI workflows

Agent Operations Center for real-time monitoring, supervision, and intervention

Enterprise guardrails, supervisory models, and continuous threat detection

API-based function calling and Model Context Protocol (MCP) tool access from AI Agent

Bidirectional metadata exchange (caller ID, IVR selections, routing data, conversation summaries) during transfers and handoffs

Voice transport via SIP trunking, PSTN transfer, CCaaS native streaming, WebSocket, gRPC, and raw RTP

Pull-mode audio retrieval from cloud storage (e.g., AWS KVS) or direct desktop capture

Warm transfer, cold transfer, conference bridge, and multi-party call tracking

Shared conversation memory across channels and human ↔ AI handoffs

Configurable voice persona — tone, empathy, communication style, pacing, pronunciation

SOC 2, ISO 27001, HIPAA, and GDPR compliance posture

Private, gated API and SDK — no public OpenAPI, no public SDK release, no self-service developer signup

Scroll within the panel for all 19 ·

Semantic Vocabularies 1

JSON-LD contexts give the data shared meaning across APIs. We profile them because semantics are what let a machine reconcile 'customer' here with 'customer' somewhere else.

JSON-LD contexts and semantic vocabularies used across these APIs.

Cresta Context

20 classes · 9 properties

JSON-LD

Security Posture 3

Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Cresta Domain Security

TLSv1.3 · DMARC

SECURITY

Cresta Vulnerability Disclosure

Hackerone · security.txt · contact published

SECURITY

Cresta Trust Center

SOC 2, ISO 27001, PCI DSS, HIPAA, GDPR

SECURITY

Integrations 18

Pre-built integrations with other platforms tell you where this provider already fits in a stack.

Pre-built integrations with other platforms and tools.

Five9

Voice integration with Five9 Intelligent CX Platform via native streaming.

Genesys Cloud CX

Native real-time voice and digital streaming integration with Genesys Cloud CX.

Genesys Engage

On-premise / hybrid integration with Genesys Engage.

NICE CXone

Real-time voice and digital integration with NICE CXone.

Amazon Connect

Real-time voice integration with Amazon Connect via Kinesis Video Streams.

Twilio Flex

Real-time voice and digital integration with Twilio Flex via Media Streams.

Talkdesk

Voice and digital channel integration with Talkdesk.

8x8

Voice integration with 8x8 contact center.

Vonage

Voice integration with Vonage Contact Center.

Gladly

Digital channel integration with Gladly.

TCN

Voice integration with TCN cloud contact center.

RingCX

Voice integration with RingCentral RingCX.

Avaya Infinity

Voice integration with Avaya Infinity Experience Platform.

Cisco UCCE / PCCE / UCCX

On-premise Cisco contact center integration via desktop capture and SIP.

Avaya (on-prem)

On-premise Avaya integration.

SIPREC

SIPREC recording integration across Oracle, Ribbon, Avaya SBC, and Cisco CUBE.

Salesforce

CRM integration for customer context and screen pop.

Model Context Protocol (MCP)

Standardized tool access for AI Agent function calling.

Scroll within the panel for all 18 ·

Resources

Every other property we hold for Cresta — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.

← All providers · Data indexed from github.com/api-evangelist/cresta · machine-readable index on apis.io