Agentic Index
Kastle vs Salient (2026)
Both vendors last verified
Kastle and Salient both sell AI agents for regulated lending, through demos with no public rates, and they differ in scope. That verdict is the Agentic Index coverage score, graded from each vendor's own published materials.
Kastle covers the loan lifecycle from origination through servicing with five named agents, a Loan Officer Assistant and Collections, Servicing, Compliance and Loss Mitigation agents, working borrower calls, texts, email and chat and escalating anything beyond their authority. Salient focuses on consumer loan servicing for banks, credit unions, captive and specialty lenders, where Taylor handles collections and servicing with borrower level memory and payment processing, Marshall audits every call and account event for compliance, and further agents cover total loss claims, disputes and charge offs. Salient adds an API with webhooks for every agent interaction and SAML sign on with roles scoped by product. Choose Kastle when origination is in scope. Choose Salient for servicing depth and an audit of every call.
This comparison is published by Agentic Index, an independent agentic AI vendor research platform. Kastle and Salient 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 Kastle if
- Origination is in scope, and an assistant that issues pre approval letters and books appointments is part of the need.
- One vendor should cover collections, servicing, compliance and loss mitigation with named agents.
- Agents must escalate anything beyond their approved authority to your staff.
Choose Salient if
- Every call and account event should be audited for compliance by a dedicated agent.
- Borrowers should be remembered across calls, with payments taken in the conversation.
- Total loss claims, disputes and charge offs are call types you need covered.
| Feature | K Kastle |
S Salient |
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| Action & orchestration | ||
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Integrations & Tool Calling Ability to connect agents to real systems through native integrations, OAuth-authenticated actions, custom tools, APIs, webhooks, or MCP-compatible tools. |
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KastleIntegrations & Tool Calling Kastle integrates with the lender's contact center, payment processor and loan management system, and its agents complete approved transactions instead of routing them to a queue, generate pre approval letters, book appointments and take payments. None of those systems is named. Setup takes days rather than months. SourceKastle, kastle.airead 2026-10-05 |
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SalientIntegrations & Tool Calling Salient's agents process payments, capture promises to pay, set up payment arrangements and update systems through integrations with loan management systems, payment processors and contact centers, with FIS, Fiserv and Jack Henry core integrations released in January 2026. SourceSalient, trysalient.com Taylor page, FAQs and release notesread 2026-09-28 |
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Workflow Orchestration Ability to sequence, branch, retry, route, and combine deterministic workflow nodes with autonomous agent steps. |
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KastleWorkflow Orchestration An Agent Builder lets the lender turn its SOPs into agents in natural language and update them without code or professional services, and agents map to the lender's existing workflows, which the lender configures. Kastle names no branching, retries or hand offs between the five agents. SourceKastle, kastle.airead 2026-10-05 |
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SalientWorkflow Orchestration Salient's agents run whole servicing workflows, gathering data, checking rules, updating systems and producing documentation, with payment negotiation bounded by configurable settlement authority tiers. A separate audit agent, Marshall, reviews every interaction and account event. There is no visual builder on the current site. SourceSalient, trysalient.com homepage, Marshall page and release notesread 2026-09-28 |
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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. |
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KastleTriggers & Channel Coverage Agents answer borrower contacts around the clock across voice, SMS, email and chat, and the Collections Agent sends payment reminders and reaches out early to delinquent borrowers without staff starting it. Kastle runs in production at 10 of the top 25 US servicers. SourceKastle, kastle.airead 2026-10-05 |
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SalientTriggers & Channel Coverage Taylor handles inbound and outbound collections calls and works SMS, email and chat, and Marshall reviews account events such as payment posting and notice dispatch as they occur, so work reaches the agents from borrowers and system events without staff starting it. SourceSalient, trysalient.com Taylor and Marshall pagesread 2026-09-28 |
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| Knowledge & context | ||
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Knowledge Grounding & RAG Ability to ground agent behavior in company data through document ingestion, retrieval, external knowledge APIs, semantic search, or RAG layers. |
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KastleKnowledge Grounding & RAG SOPs become agent instructions through the Agent Builder, and the compliance engine is pre trained on FDCPA, TILA and UDAAP as well as RESPA and TCPA. Kastle names no knowledge base or retrieval over the lender's documents, and does not say what the agent reads from the loan management integration. SourceKastle, kastle.ai homepageread 2026-09-28 |
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SalientKnowledge Grounding & RAG Taylor works from the borrower's account data across product lines, drawn from the servicing systems for each interaction, and Marshall checks against Salient's own repository of lending laws. There is no knowledge base or retrieval over the lender's documents, so this is context assembled per interaction. SourceSalient, trysalient.com Taylor and Marshall pagesread 2026-09-28 |
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Memory & State Persistence Ability to persist context across a run, conversation, workflow, user, team, or longer-term memory layer. |
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KastleMemory & State Persistence Borrower and loan records stay in the lender's own loan management system, and Kastle names no memory the agents keep of borrowers or past conversations. SourceKastle, kastle.ai homepageread 2026-09-28 |
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SalientMemory & State Persistence Borrower level memory carries promises to pay, hardship conversations, prior disputes and escalation history into each interaction, and cross channel memory lets a borrower who starts on SMS resume by phone. The scope is per borrower, but there is no stated lifetime, review or deletion path for that memory. SourceSalient, trysalient.com homepage and release notes (Taylor 2.1)read 2026-09-28 |
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| Control & trust | ||
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Human Oversight & Guardrails Approval steps, consent checkpoints, escalation rules, structured guardrails, policy constraints, and pause/resume controls. |
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KastleHuman Oversight & Guardrails Agents complete only approved transactions and hand requests beyond their authority, such as loan modifications, and warm leads to people, with a compliance engine constraining what they say. Kastle names no step where staff approve an agent action before it goes through. In the Agent Builder example, an agent for missed payment calls explains repayment plan options, collects the details and escalates to a person when the borrower asks for a loan modification. SourceKastle, kastle.airead 2026-10-05 |
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SalientHuman Oversight & Guardrails Payment negotiation runs within configurable settlement authority tiers, real time compliance guardrails constrain every channel, and Taylor hands off to human agents when escalation is warranted. Human review is not required on every call, and there is no step where a person approves an action before it commits. SourceSalient, trysalient.com Taylor page, homepage and release notesread 2026-09-28 |
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Security, Identity & Governance RBAC, SSO, auditability, encryption, least-privilege tool access, compliance posture, and data handling policy. |
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KastleSecurity, Identity & Governance Certification covers SOC 2 Type I and Type II, the company says it is GDPR ready, and a hosted trust center sits at trust.oneleet.com/kastle. Kastle names no SSO, roles or permissions for the lender's users. SourceKastle, kastle.ai; trust.oneleet.com/kastleread 2026-10-05 |
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SalientSecurity, Identity & Governance SAML 2.0 SSO works with enterprise identity providers, and role based access controls are scoped to product level (released February 2026). The company reports SOC 2 and PCI Level 1 compliance and regular penetration testing. SourceSalient, trysalient.com release notes and FAQsread 2026-09-28 |
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Observability & Auditability Traces, logs, execution histories, metrics, audit events, and debugging detail for production agent behavior. |
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KastleObservability & Auditability Real time monitoring with automated QA scorecards runs on every interaction, and Kastle says every AI response is fully explainable with reasoning built in. It names no view per call of the actions or transactions the agent carried out. QA covers 100% of interactions, whether an agent or a person handled them. SourceKastle, kastle.airead 2026-10-05 |
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SalientObservability & Auditability Marshall reviews every interaction and account event (calls, payment posting, status changes, notices) with a complete audit trail and exports full interaction logs on demand, and an immutable audit log is delivered to the customer's own S3 every 24 hours. SourceSalient, trysalient.com Marshall page and release notesread 2026-09-28 |
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Deployment & Data Residency Deployment modes and options, including SaaS, dedicated cloud, VPC, on-prem, hybrid, local runtime, and self-hosting. |
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KastleDeployment & Data Residency The service is hosted by Kastle, and lenders set it up in days. No hosting region or region choice is published, and no dedicated or customer hosted option is offered. Sourcerishichoudhary.com/kastleprivacypolicyread 2026-09-28 |
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SalientDeployment & Data Residency Each lender receives its own private cloud. That is how every customer is hosted, not an option, and there is no region choice, customer cloud or on premises deployment. SourceSalient, trysalient.com FAQsread 2026-09-28 |
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| Solution readiness | ||
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Prebuilt Agents, Templates & Packs Ready-made workflows, packaged employees, templates, blueprints, industry solutions, and role-specific agents that reduce time-to-value. |
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KastlePrebuilt Agents, Templates & Packs Five named agents with separate jobs make up the product line. The Loan Officer Assistant handles pre approvals, appointments and warm transfers, alongside a Collections Agent, a Servicing Agent, a Compliance Agent and a Loss Mitigation Agent, and each works on its own. The Collections Agent automates payment reminders and engages delinquent borrowers early, and the Servicing Agent resolves inquiries across voice, SMS, email and chat and completes approved transactions instead of routing them to a queue. SourceKastle, kastle.airead 2026-10-05 |
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SalientPrebuilt Agents, Templates & Packs Five named agents do separate jobs. Taylor covers collections and servicing, Marshall automated compliance audit, Flyn total loss insurance claims, Alex chargebacks and disputes, and Melanie charge offs, and each is sold and versioned as its own product. SourceSalient, trysalient.com product pages and release notesread 2026-09-28 |
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| Platform extensibility | ||
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Model Flexibility & Routing Ability to work across multiple foundation models, route tasks to different models, or let buyers bring their own providers and keys. |
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KastleModel Flexibility & Routing The agents run on a proprietary compliance engine and one centralized AI engine across channels. Kastle names no model provider and offers no model choice. That compliance engine is pre trained on FDCPA, TILA, UDAAP, RESPA and TCPA. SourceKastle, kastle.airead 2026-10-05 |
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SalientModel Flexibility & Routing No model provider is named and no model choice is offered. SourceSalient, trysalient.com FAQs and release notesread 2026-09-28 |
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APIs, SDKs & MCP Extensibility Composability layer: stable APIs, SDKs, MCP tool consumption/serving, custom tools, and integration into internal systems. |
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KastleAPIs, SDKs & MCP Extensibility Beside chat, email, voice and SMS, custom surfaces connect through an API into Kastle's engine, but Kastle publishes no reference, endpoints, SDK or developer portal. Integrations connect the contact center, payment processor and loan management system. SourceKastle, kastle.airead 2026-10-05 |
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SalientAPIs, SDKs & MCP Extensibility API v2 (February 2026) provides a unified endpoint for all agent interactions with webhook support, and the endpoint reference lives in the API documentation at onboarding.trysalient.com. SourceSalient, trysalient.com release notes and footerread 2026-09-28 |
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Testing, Debugging & Optimization Testing, debugging, scoring, retries, fallbacks, quality gates, and optimization loops for improving agent workflows before and after deployment. |
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KastleTesting, Debugging & Optimization Simulation testing runs AI generated edge cases against agents before they reach production, and automated QA scorecards score every live interaction for compliance. Kastle reports 100% QA coverage and a 99.5% compliance score, and claims 70% lower cost per call, 40% lower handle time and CSAT above 90%. SourceKastle, kastle.airead 2026-10-05 |
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SalientTesting, Debugging & Optimization Marshall scores every call and account event against federal and state lending rules in real time, flags violations and complaints, and detects drift from the lender's SOPs, so the agents' output is scored after deployment. There is no pre release test harness on the current site. SourceSalient, trysalient.com Marshall page and release notesread 2026-09-28 |
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| Specialist automation | ||
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Browser & Computer Use Browser, desktop, or remote/local computer control for workflows that cannot be handled through stable APIs alone. |
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KastleBrowser & Computer Use Systems are reached through integrations with the contact center, payment processor and loan management system. Kastle names no browser, desktop or computer control. Custom surfaces connect through an API. SourceKastle, kastle.airead 2026-10-05 |
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SalientBrowser & Computer Use Systems are reached through loan management, core, payment and contact center integrations and the API, and no browser, desktop or computer control is described. SourceSalient, trysalient.com FAQs and release notesread 2026-09-28 |
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Pricing snapshot
Sourced from the Index pricing dataset · open each vendor's profile for full detail.
| Pricing | K Kastle |
S Salient |
|---|---|---|
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Entry price Lowest public entry point |
Contact sales | Contact sales |
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Pricing confidence How public the numbers are |
Contact only | Contact only |
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Billing Primary billing axis |
enterprise contract | enterprise contract |
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Variable cost Workload / overage exposure |
Medium variable cost | Medium variable cost |
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Free tier / trial Try before you buy |
No free tier
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No free tier
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Buying motion Self-serve vs sales call |
Sales call | Sales call |
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Pricing verified When this pricing was last checked |
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