Ortelian vs Sierra:
which fits your company?

Choose Sierra when the goal is an AI agent that answers and helps your customers, such as resolving a service request, updating a subscription or submitting a warranty claim. Sierra deploys one agent across chat, SMS, WhatsApp, email, voice and ChatGPT, hands conversations to your contact centre when they need a person, and comes with tools to review conversations, run experiments and improve the agent over time.

It also fits when you want a vendor whose pricing follows results. Sierra uses outcome-based pricing, and its forward-deployed agent development team embeds with engineering, customer experience or operations to help the agents succeed. If customer service is where AI should go first, that is a focused way to start. Decagon, which describes itself as an AI concierge for every customer across chat, voice and email, works in the same category.

Choose Ortelian when you want AI to change how a specific piece of work runs, such as a planning round, a back-office check or a sales process with many people and sources, and that work depends on context no single system holds. That work rarely happens in one conversation. It runs across handoffs, systems and people, so the process has to be redesigned, the standard agreed on real examples, and agents built that do the steps inside your systems. We work on site not because our product needs it, but because your company does. The detail is on how we work and on what an AI-native deployment partner does.

The platform is what stays with you. Agents work from a world model for knowledge work: your systems of record joined with outside sources, organised by an ontology we define with you, with every fact keeping its source. Workshops during the build prepare your team to own the work. After launch, they run it or we keep running it for you. Either way, we host and operate the platform, and the evaluations keep running on the work in use. Your own agents and AI tools can work with the platform headless, through the scoped tools we set up with you. It is hosted in the EU, agents use models with zero data retention, and anything that leaves the company waits for a person’s approval.

Sierra can handle the conversations with your customers. Ortelian can run the internal work around them, like the checks, planning and preparation that depend on context from many systems. We agree in the audit which systems and sources the Ortelian agents use and where the line between the two sits.

Other comparisons: Ortelian vs Glean, Ortelian vs building in-house, Ortelian vs AI consultancies, Ortelian vs Microsoft Copilot and Ortelian vs ChatGPT Enterprise.