Kindred Voice

Kindred Voice: Reliable Speech-to-Speech Voice Agents, Built in Minutes

Kindred Voice lets teams build production voice agents for real phone lines by describing how they handle a call, in a chat window or out loud to its builder over the phone. Agents run on native speech-to-speech models with no transcription step, and the call procedure is enforced in code above the model, so callers cannot talk the agent into an action it is not authorized to take.

Key Features

• Build by Voice or by Hand: Teams describe their process and Kindred builds the agent, or they build it themselves in the app without prompt engineering.

• Graph-Based Workflows: Call procedures are drag-and-drop graphs that non-technical staff can edit and hotfix in real time, with no redeploy.

• Native Speech-to-Speech: Voice is processed end to end instead of through a speech-to-text, LLM and text-to-speech chain, so tone and urgency reach the model.

• Realtime Multimodal Stabilization (RMS): A provisional-patent layer turns the workflow into a deterministic structure, letting an agent run 20+ sequential tool calls in one conversation.

• Action Locking: Each workflow step defines which actions are unlocked, so prompt injection or pressure from a caller cannot trigger anything else. Handing off to a person and ending the call are always available.

• Read-Back of Sensitive Details: Agents read back sensitive information before committing it.

• Model Choice: Google Gemini, Grok from SpaceXAI, OpenAI and Amazon Nova Sonic are supported, and switching the model is a setting.

• Multilingual by Default: Agents answer in the caller's language with no per-language add-ons.

• Audit and Integrations: Every call is logged for auditing, agents connect to phone systems and CRMs, and rollouts can be phased with component testing.

Use Cases

• After-Hours Intake: Answer client calls at night and on weekends, escalate emergencies and queue follow-ups for the morning team.

• Customer Service Policies: Handle requests such as refunds while holding to the rules the business has set.

• Multilingual Surveys and Compliance Calls: Run structured calls in languages such as Mandarin, built by non-engineers through the UI.

• High-Volume Phone Lines: Cover 24/7 call traffic, with the platform handling 1,000+ simultaneous calls.

Pricing

• Free: $0 to build an agent and talk to it in the browser.

• Starter: $20 per month to put an agent on its own phone number.

• Pro: $100 per month for more workflows and more volume.

• Enterprise: Built with the Kindred team and priced per resolved call, from $1 to $5 depending on task complexity. Calls handed to a person are not billed.

Getting Started

• Website: https://kindredvoice.ai

• Sign up free at app.kindredvoice.ai to build an agent, or try a demo without an account at try.kindredvoice.ai.

Kindred Voice gives operations teams a way to launch phone agents quickly and keep them on procedure as their processes change.