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Sierra

Sierra · #18 most active of 19 in Agents & Automation

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Sierra builds branded voice and chat agents for support, charging per resolved conversation rather than per seat.

Current version

2025

Entry cost

Outcome-based per resolution

Changes / 30d

0

Capabilities

  • Voice and chat agents
  • Agent OS
  • Brand persona control
  • Supervisor tooling
  • Outcome analytics

Pricing

  • Outcome pricing

    per resolution

    Free

Entry price over time

Not enough pricing history yet — we start charting from the second observation.

Geek mode

Models under the hood

  • Claude

    Anthropic

    disclosed

  • GPT-5 class

    OpenAI

    disclosed

Context window

Model-dependent

Public API

yes

Multi-model routing

yes

Stack signals

  • Agent OS
  • Telephony stack
  • Multi-model routing

Shared model stack

Other tracked products running on the same foundation models — a quick read on how much of the catalog moves when one of these models changes.

green disclosed · amber inferred · grey unknown

Reported scale

Reference data. Each figure is whatever the source actually said — weekly users, downloads, revenue run-rate — with its own definition and date. These are not comparable between tools and are never used to rank anything.

No public usage figure on record for this product.

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Change history

No changes recorded yet.