---
title: "Telnyx voice agent latency: independent TTFAB benchmark (2026) | Openbenchmarks"
description: "Telnyx voice-agent latency measured on real calls: median and p95 TTFAB, tail consistency, usable turns, cost, official docs, and the full five-platform comparison."
url: https://openbenchmarks.com/voice-agent-latency/telnyx
---

[](https://openbenchmarks.com/) 

[← voice agent latency benchmark](https://openbenchmarks.com/voice-agent-latency) 

[benchmarks](https://openbenchmarks.com/) / [voice agent latency](https://openbenchmarks.com/voice-agent-latency) / Telnyx 

independently measured voice agent latency 

# Telnyx voice agent latency, independently benchmarked

Telnyx is measured in a five-platform benchmark covering Telnyx, Bland AI, ElevenLabs, Retell AI, and Vapi on the same fixed caller script. Time To First Audio Byte is read from the saved audio of real phone calls—not from a platform-reported timestamp.

[Telnyx official docs ↗ ](https://developers.telnyx.com/docs/inference/ai-assistants/no-code-voice-assistant) 

\[01\] Telnyx on the benchmark

## How Telnyx performed

Each platform runs the stack it ships to a new signup, with the documented endpointing exception explained in the [complete methodology](https://openbenchmarks.com/voice-agent-latency#methodology).

| Metric | Telnyx | Standing |
| --- | --- | --- |
| Median TTFAB | **1,296 ms** | #1 of 5 |
| p95 TTFAB | **1,856 ms** | #2 of 5 |
| Tail ratio (p95 ÷ median) | **1.43×** | #4 of 5 |
| Usable turns | **419/432** | 13 discarded |
| Measured invoiced cost/min | **$0.0500** | Not a rate-card estimate |

\[02\] full benchmark

## Telnyx compared with every measured voice agent platform

The complete table from the main benchmark, ordered by median TTFAB. Read the [voice agent latency benchmark](https://openbenchmarks.com/voice-agent-latency) for the metric definition, methodology, discard rules, configuration receipts, and open data.

| # | Platform | Official docs | TTFAB p50 | TTFAB p95 | Tail ratio | Usable turns | Cost/min |
| - | --- | --- | --- | --- | --- | --- | --- |
| 1 | [Telnyx](https://telnyx.com "Open Telnyx in a new tab") | [Telnyx official docs ↗ ](https://developers.telnyx.com/docs/inference/ai-assistants/no-code-voice-assistant) | 1,296 ms | 1,856 ms | 1.43× | 419/432 | $0.0500 |
| 2 | [ElevenLabs](https://elevenlabs.io "Open ElevenLabs in a new tab") | [ElevenLabs official docs ↗ ](https://elevenlabs.io/docs/eleven-agents/quickstart) | 1,424 ms | 1,768 ms | 1.24× | 429/432 | $0.0794 |
| 3 | [Bland AI](https://www.bland.ai "Open Bland AI in a new tab") | [Bland AI official docs ↗ ](https://docs.bland.ai/starter-guide) | 1,520 ms | 2,248 ms | 1.48× | 429/432 | $0.1408 |
| 4 | [Vapi](https://vapi.ai "Open Vapi in a new tab") | [Vapi official docs ↗ ](https://docs.vapi.ai/assistants/quickstart) | 1,558 ms | 2,008 ms | 1.29× | 382/432 | $0.0836 |
| 5 | [Retell AI](https://www.retellai.com "Open Retell AI in a new tab") | [Retell AI official docs ↗ ](https://docs.retellai.com/general/introduction) | 1,740 ms | 2,259 ms | 1.30× | 419/430 | $0.1341 |

\[03\] faq

## Telnyx benchmark questions

### How fast is Telnyx on the voice agent latency benchmark?

Telnyx records a median TTFAB of 1,296 ms and a p95 TTFAB of 1,856 ms over 419 usable turns in the current benchmark snapshot. TTFAB is measured from the caller's speech ending to the agent's audio beginning in the saved phone-call recording.

### Where are the official Telnyx voice agent docs?

The official documentation used to identify the Telnyx voice-agent product and setup is linked from this page and the complete benchmark table.

### Do any measured voice agent platforms achieve sub-second or under-500 ms latency?

No. None of the 5 measured platforms has a median caller-experienced TTFAB below one second or 500 ms in the current benchmark. The lowest measured median is Telnyx at 1,296 ms. TTFAB here covers the complete pause from the caller finishing speech to hearing the agent's first audio over a real phone call; a server-side vendor TTFB can exclude endpointing, telephony, and network delay.

### What are the measured alternatives to Telnyx?

The voice agent platforms measured alongside Telnyx are ElevenLabs, Bland AI, Vapi, Retell AI. Every platform is called with the same caller and fixed script, and latency is measured from the saved call audio rather than vendor-reported timestamps.

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