Agentic Index

Lorikeet vs Sierra (2026)

Both vendors last verified

Lorikeet and Sierra both resolve complex conversations autonomously, and one of them is deliberately narrower. That verdict is the Agentic Index coverage score, graded from each vendor's own published materials.

Sierra is the enterprise platform, outcome priced through sales, general across industries. Lorikeet is built for fintech and health technology companies under regulation, running actions of several steps over chat, email, voice and SMS, checking every conversation for quality and keeping an audit trail, on a Start plan of $2,100 a month billed annually plus $0.99 per chat, email or SMS resolution. Sierra will serve any large enterprise, and Lorikeet will serve a regulated one without you having to build the compliance layer yourself.

This comparison is published by Agentic Index, an independent agentic AI vendor research platform. Lorikeet and Sierra are each graded against the same 14 capability Agentic Index taxonomy, from the vendor's own public materials under the Agentic Index verification standard, alongside 1,084 researched vendors. No vendor pays for placement and no vendor has reviewed this page. How this evidence is graded

Choose Lorikeet if

  • Regulated fintech or health technology is your industry and the specialization is the point.
  • A public per resolution rate lets you build the business case immediately.
  • 100 percent quality assurance is a requirement your regulator effectively imposes.

Choose Sierra if

  • Your industry is not regulated in that way, and you want Ghostwriter to draft agents from existing procedures.
  • Enterprise scale across many use cases beyond support is where you are heading.
  • You want the largest reference base in the category behind the decision.
Feature
L
Lorikeet
S
Sierra
Action & orchestration

Integrations & Tool Calling

Ability to connect agents to real systems through native integrations, OAuth-authenticated actions, custom tools, APIs, webhooks, or MCP-compatible tools.

Workflow Orchestration

Ability to sequence, branch, retry, route, and combine deterministic workflow nodes with autonomous agent steps.

Triggers & Channel Coverage

How agents wake up and where they work: schedules, webhooks, message events, CRM events, inbox events, chat, email, voice, and collaboration tools.

Knowledge & context

Knowledge Grounding & RAG

Ability to ground agent behavior in company data through document ingestion, retrieval, external knowledge APIs, semantic search, or RAG layers.

Memory & State Persistence

Ability to persist context across a run, conversation, workflow, user, team, or longer-term memory layer.

Control & trust

Human Oversight & Guardrails

Approval steps, consent checkpoints, escalation rules, structured guardrails, policy constraints, and pause/resume controls.

Security, Identity & Governance

RBAC, SSO, auditability, encryption, least-privilege tool access, compliance posture, and data handling policy.

Observability & Auditability

Traces, logs, execution histories, metrics, audit events, and debugging detail for production agent behavior.

Deployment & Data Residency

Deployment modes and options, including SaaS, dedicated cloud, VPC, on-prem, hybrid, local runtime, and self-hosting.

Solution readiness

Prebuilt Agents, Templates & Packs

Ready-made workflows, packaged employees, templates, blueprints, industry solutions, and role-specific agents that reduce time-to-value.

Platform extensibility

Model Flexibility & Routing

Ability to work across multiple foundation models, route tasks to different models, or let buyers bring their own providers and keys.

APIs, SDKs & MCP Extensibility

Composability layer: stable APIs, SDKs, MCP tool consumption/serving, custom tools, and integration into internal systems.

Testing, Debugging & Optimization

Testing, debugging, scoring, retries, fallbacks, quality gates, and optimization loops for improving agent workflows before and after deployment.

Specialist automation

Browser & Computer Use

Browser, desktop, or remote/local computer control for workflows that cannot be handled through stable APIs alone.

Pricing snapshot

Sourced from the Index pricing dataset · open each vendor's profile for full detail.

Pricing
L
Lorikeet
S
Sierra

Entry price

Lowest public entry point

Start at $2,100 per month billed annually, plus $0.99 per chat, email or SMS resolution and $1.50 per voice resolution. Scale at $5,100 per month with lower rates. Signature is custom. Outcome based (per resolution) · contact sales

Pricing confidence

How public the numbers are

Public, partial Contact only

Billing

Primary billing axis

Resolutions, billed per resolution by channel on top of a monthly plan fee that is billed annually. Outcome based, charged per resolution or other outcome, such as a saved cancellation or a completed upsell.

Variable cost

Workload / overage exposure

Medium variable cost High variable cost

Free tier / trial

Try before you buy

No free tier
No free tier

Buying motion

Self-serve vs sales call

Sales call Sales call

Pricing verified

When this pricing was last checked

Product updates

Newest first, each linked to its source.

Lorikeet

  • · MCP / tool calling / API

    Lorikeet concierges now support the Personal Agent Protocol, the draft open protocol from Sierra and Meta for consumer agents, alongside A2A and WebMCP.

    Source
  • · Observability / auditability

    Customer conversations that come from AI agents rather than people can now be flagged in Lorikeet, in beta.

    Source

Sierra

  • · Human approval / guardrails

    Compliance Console, built into the Horizon platform, sets the rules Sierra agents follow when they reach out to customers by phone, text or email.

    Source
  • · Agent capability

    Sierra launched fleming-1, a model of its own that detects when the caller on a phone call is another agent by assessing whether the voice is synthetic while the call is still happening.

    Source
  • · Security / enterprise

    Sierra achieved AIUC-1 certification after an independent audit by Schellman and testing by the Artificial Intelligence Underwriting Company.

    Source

Other matchups in customer support agents

Not the pairing you were after? These compare a different set of customer support agents on the same 14 capabilities.

See all 136 customer support agents comparisons

Contact us

Found a vendor we missed? Have feedback on the index? We'd love to hear from you.