Tell Models by Retell AI

Retell AIProprietary
Retell AI releases · 1 in the last 12 monthsChangelog →
1 model2026

Last refreshed 2026-11-14. Next refresh: weekly.

Details

ResearcherRetell AI
LicenseProprietary
Commercial useRestricted
Models1
Released2026

Capabilities

ReasoningAll models
JSON / Tool useAll models

Links

Website

About

Tell is Retell AI's family of in-house language models for contact-center voice agents. The first model, Tell-1 (November 13, 2026), starts its spoken reply right away and reasons silently while it speaks. It is offered as an agent model on the Retell platform.

Decision facts

Best fit
agenticreasoningJSON / Tool use
Capability starting point
Tell-1 with reasoning and JSON / Tool use
Lowest tracked input
Not tracked
Closest related family
360Zhinao

Current Variants

Use-when guidance is based on each model's tracked capabilities, context window, release date, and replacement status.

1 in view
Tell-1Current

Use when the workload needs agentic, reasoning, and JSON / Tool use.

2026-11agenticreasoningJSON / Tool use

Release Timeline

1 release group
2026-11
1 current
Tell-1
agenticreasoningJSON / Tool use
Current

Specifications(1 models)

Tell model specifications comparison
ModelReleasedReasoningJSON / Tool use
Tell-12026-11YesYes

Available From(1 provider)

Retell AI