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Retell AI

Platform to build, test, deploy and monitor AI voice and chat agents, with telephony, prompts, tools and analytics.

Infrastructure by Retell AI

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Chalk Labs

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npm install retell-sdk

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About

Retell builds and runs AI voice and chat agents. It runs the telephony, speech and language model layers, so you configure the agent rather than connect those providers. An agent can be a single prompt or a conversation flow for steps that must run in a fixed order. Retell includes a knowledge base, integrations with CRM and calendar tools, and post-call scoring.

Use cases: voice-agents

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Fact sheet

Category
Voice · voice agent platform

Plans

Pay as you go$0$0.07-$0.31 per minute for voice agents, $10 free credits, 20 free concurrent calls, no commitments
EnterpriseContact salescustom pricing, no cap on concurrent calls, custom MSA, DPA and BAA, SSO, dedicated stable server add-on

From the vendor's pricing page, read Oct 24, 2026.

Facts read from the vendor's own pages by claude-haiku-5-5 on Oct 24, 2026; a fact is shown only with the page it came from.

Details

Packages
npm retell-sdkpypi retell-sdk
License
License unknown
Website
www.retellai.com
Docs
docs.retellai.com
First seen
Oct 24, 2026
Last checked
Oct 24, 2026
Source
WebsitePricing pageDocs

More from Retell AI

Done for you

Rather not set it up yourself?

Chalk Labs scopes, builds and runs agents for your team: the task audit, the eval harness, the integrations and the weekly ops report. Fixed scope, priced before we start.

See how we build AI agents →Read the case studies

Chalk Labs is a two-founder AI and growth studio. We build AI agents, CRMs and MVPs for Web3 and AI companies, and have shipped 50+ product and token launches.

launches shipped
50+
launches shipped
media placements
500+
media placements
founders on every account
2
founders on every account

Press we've placed: Forbes · CoinDesk · Decrypt · Cointelegraph · The Block

Rahil Jain, Co-founder, Chalk Labs. Ex-Goldman Sachs engineer. You talk to the person who builds it.

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Cite this page

Retell AI. Agent Mart. https://agentmart.dev/infrastructure/retell-ai (last updated 2026-10-24)