Telnyx is excited to announce expanded LLM support for [Voice AI Agents](https://telnyx.com/products/voice-ai-agents), adding OpenAI’s GPT-5 and Groq’s gpt-oss-120b to your agent’s toolkit. These models open up new possibilities for delivering lifelike, real-time conversations with more choice, flexibility, and cost efficiency.


## What’s new



* **Support for OpenAI GPT-5** with minimal reasoning effort enabled by default for real-time voice suitability.
* **Support for Groq gpt-oss-120b** for high-speed, open-source performance.
* **Seamless integration** with the AI Assistant Builder so you can test instantly.


## Key benefits



* **Lower latency and pricing for GPT-5:** Response times stay under real-time thresholds, and aggressively low cached input costs make it ideal for voice agents where most tokens are cached.
* **Open-source acceleration:** Groq’s gpt-oss-120b delivers high-throughput inference with competitive performance.
* **More choice:** Select the LLM that fits your performance, cost, and capability needs.


## Why it matters

Voice AI Agents succeed or fail on speed. By optimizing GPT-5 for minimal reasoning effort, we’ve made it viable for real-time interactions without sacrificing conversational quality. And because most voice agent tokens are cached input, GPT-5’s pricing structure offers significant cost advantages. Groq’s gpt-oss-120b brings another competitive option for developers seeking open-source speed and scalability.


## Getting started

It only takes a few minutes to get started.



1. [Sign up](https://telnyx.com/sign-up) or [log in](https://portal.telnyx.com/#/login/sign-in) to your Telnyx Mission Control Portal account.
2. Navigate to the AI Assistants section.
3. Create a new AI Agent or edit an existing one. 
4. In the “Agent” tab, select your LLM from the dropdown list.
5. Test your agent directly in the AI Assistant Builder.

Telnyx Voice AI Agents now support OpenAI’s GPT-5 and Groq’s gpt-oss-120b, offering low-latency performance, cost efficiency, and open-source speed.

Expanded LLM Support for Voice AI Agents: GPT-5 and Groq gpt-oss-120b

Telnyx now supports GPT-5 and Groq gpt-oss-120b for Voice AI Agents, delivering more choice, faster responses, and cost-efficient performance for real-time voice.

Expanded LLM Support: GPT-5 and Groq gpt-oss-120b for Voice AI Agents

Telnyx RCS customers can now make smarter routing decisions for RCS campaigns. Our new [RCS Capability Check API](https://developers.telnyx.com/api/messaging/list-rcs-capabilities-of-a-phone-number) lets you verify if a destination number is RCS-capable before sending, whether you’re checking a single number or an entire list in bulk.

Before, businesses had to rely on “send and see” to know if RCS was supported, leading to unnecessary fallback traffic and extra costs. Now, it's easy to identify whether the recipient’s device and carrier support RCS (and which features) in advance, optimizing delivery reliability and reducing wasted sends.

What you can find out with the API:

- ✅ Whether the device is RCS-enabled
- ✅ Whether the carrier supports RCS
- ✅ Which RCS features are available (e.g., rich cards, media, suggested actions)

Users should note that not all carriers or devices reliably surface full capability data, while Google's RCS platform (RBM) has known variability in capability reporting, especially for dynamic states. 

### Getting started
Telnyx customers can start using this new capability by following our [quickstart guide](https://developers.telnyx.com/docs/messaging/messages/rcs-capabilities) or implementing [the API](https://developers.telnyx.com/api/messaging/list-rcs-capabilities-of-a-phone-number). 

RCS Capability Check API lets you verify if a destination number is RCS-capable before sending for more intelligent routing. 

Check RCS Device & Carrier Capabilities Before You Send

Check RCS Device & Carrier Capabilities Before Sending

We're excited to announce the launch of the official Telnyx React Library for AI agents, giving developers full control to build and deploy custom web-based frontends for their voice-enabled AI applications.

With this new Library, teams can go beyond default widgets to create highly tailored UI/UX experiences that match their brand, support unique user flows, and integrate tightly with internal systems. The SDK exposes all the building blocks needed for seamless multimodal interactions, including real-time transcription, connection management, conversation state, and event handling, all built on top of Telnyx’s low-latency WebRTC infrastructure.

Alongside the SDK, we’re also rolling out support for image uploads via the default assistant widget, expanding the multimodal capabilities of our front-end offering. Customers using vision-capable LLMs like GPT-4o or LLaMA 4 Maverick (via Groq) can now let users send photos mid-chat, opening the door to visual troubleshooting, document verification, and more.


## What’s new



* Telnyx TypeScript/React Library for building custom AI Assistant frontends (<code>[@telnyx/ai-agent-lib](https://www.npmjs.com/package/@telnyx/ai-agent-lib?activeTab=readme)</code>).
* First-party support for image upload in the widget for vision-capable LLMs.
* Continued focus on developer-first multimodal tooling.


## Why it matters

This release makes it dramatically easier to create branded, multimodal agent experiences without compromising performance or flexibility. Whether you're building Voice AI Agents for onboarding, support, or in-field service, Telnyx now provides a complete frontend and backend solution for real-time, voice-first AI on the web.


## Getting started

It only takes a few minutes to get started.



1. Install the SDK with `npm install @telnyx/ai-agent-lib.`
2. Use the Quick Start steps and code snippets on [npm](https://www.npmjs.com/package/@telnyx/ai-agent-lib).

Create custom Voice AI Agent widgets using the new Telnyx TypeScript/React Library with real-time audio, transcription, and multimodal support built in.

Build custom Voice AI Agent widget UIs with the Telnyx TypeScript/React Library

The Telnyx TypeScript/React Library gives developers full control to build custom Voice AI Agent widgets with low-latency, multimodal support.

Build custom frontends for Voice AI Agents with the Telnyx Library

We’ve expanded again to give you more ways to connect with customers across the globe. Telnyx now supports local outbound calling in 80 countries, with 3 new additions:
- Pakistan – Geographical
- Honduras – Geographical
- Mozambique – Mobile


[Explore updated global coverage.](https://telnyx.com/global-coverage)

<br>

## Why this matters:
- **Reach more markets:** Build trust and boost engagement with local caller IDs.
- **Better call performance:** Local outbound routes help increase answer rates.
- **Streamlined setup:** Use familiar dialing formats that support local compliance needs.


## Getting Started:
1.  **Choose Your Number:** Log into Telnyx Mission Control Portal, navigate to the Real time communications→Numbers→Buy numbers section, and select from our newly available country numbers. Learn more about it in this [hands-on demo.](https://support.telnyx.com/en/articles/4380325-search-and-buy-numbers)
2.  **Set Up Outbound Routing:** Configure your calling preferences to maximize connectivity and efficiency.
3.  **Start Connecting:** Begin reaching your customers immediately and experience high quality voice.


[Get started](https://telnyx.com/sign-up) today to connect with your customers wherever they are.


Telnyx now supports 2-way voice and local outbound calling in 80 countries, including new routes in pakistan, honduras, and mozambique. 

Telnyx adds 3 new countries to 2-way voice, now live in 80

We’ve expanded again to give you more ways to connect with customers across the globe. Telnyx now supports local outbound calling in 80 countries, with 3 new additions: Pakistan, Honduras, Mozambique

Telnyx adds 3 new countries to 2-way voice coverage, now reaching 80 globally

Telnyx AI Agents can now receive inbound MMS messages from users during an active voice call. This means callers can send images or rich media while speaking with the agent, and it can respond in real-time, provided it’s powered by a vision-capable LLM. Currently supported vision models include `Groq/llama-4-maverick-17b-128e-instruct` and `OpenAI/gpt-4o`. 


## What’s new



* In-call MMS support is now available for Voice AI Agents with messaging enabled and matching voice and SMS numbers.
* This functionality works seamlessly with third-party vision models that can interpret image input along spoken dialogue.


## Why it matters

This release introduces a major leap in multimodal AI conversations. With MMS support:



* Callers can send a photo, file, or receipt mid-call, and the AI Agent can immediately interpret and respond.
* Agents can deliver more contextual help, like confirming an ID photo or reviewing an image of a damaged product.
* You can offer a richer, more humanlike customer experience without breaking the flow across channels.


## Getting started

It only takes a few minutes to enable MMS support.



1. [Sign up](https://telnyx.com/sign-up) or [log in](https://portal.telnyx.com/#/login/sign-in) to your Telnyx Mission Control Portal account.
2. Ensure messaging is enabled for your Voice AI Agent.
3. Use the same `to ` and `from ` numbers for voice and messaging.
4. Use a vision-capable model (like GPT-4o or LLaMA-4-Maverick on Groq).
5. Send an image from your phone during a call and watch the agent respond in real time.

Telnyx Voice AI Agents can now receive MMS messages during live calls. Send images mid-conversation and get real-time responses using vision-capable LLMs.

Telnyx AI Agents now support inbound MMS during live voice calls

Telnyx Voice AI Agents now support receiving MMS messages during live calls. Users can send images mid-conversation, and the agent will interpret and respond instantly using a vision-enabled model like GPT-4o or LLaMA 4 Maverick.

Inbound MMS support for Voice AI Agents

[Today we announced](https://www.globenewswire.com/news-release/2025/07/31/3125325/0/en/Telnyx-Supercharges-European-Voice-AI-with-Paris-GPU-Edge-Breaking-200ms-Latency-Barrier.html) the expansion of our Voice AI infrastructure in Europe with the activation of a GPU point of presence (PoP) in Paris, France. By embedding our inference stack directly alongside the pan-European telephony backbone, we now deliver round-trip times under 200 milliseconds in the region to ensure truly seamless, human-like conversations that keep pace with natural speech.

## Built for speed and sovereignty

All speech recognition, orchestration, and synthesis execute at the Paris edge, eliminating detours through distant clouds and delivering sub-200 ms performance for over 30 European languages. This in-region processing also keeps every audio stream, transcript, and AI prompt fully within EU borders, making GDPR, DORA, and local data-retention compliance effortless.

Developers gain even more flexibility thanks to serverless AI Workers deployed at every edge site enabling custom hooks, filters, or on-prem LLM gateways to spin up with cold starts under 100 ms. Coupled with one-line web widgets, NaturalHD™ neural voices, A/B testing toolkits, and native MCP server mode, this release gives teams everything they need to accelerate prototyping and drive production-ready [Voice AI Agents](https://telnyx.com/products/voice-ai-agents) at scale.

## Powering the next wave of communications in Europe

Whether you’re rolling out intelligent IVRs for finance, multilingual agents for logistics, or automated hotlines for the public sector, our Paris GPU PoP delivers the speed, scale, and compliance your European deployments demand, without the latency of trans-Atlantic backhaul or the complexity of legacy call centers.

### **Getting Started with Voice AI in Europe**

Build intelligent Voice AI Agents with media anchored in Europe in minutes through our portal or via API. 
Start by logging into the [Mission Control Portal](https://portal.telnyx.com), and navigate to Profile → Account settings in he top right hand corner. 

In your Profile, scroll down to Data Storage Location and choose between the United States or Germany. Once you've selected your desired location, click Save Location. 

To edit your Media AnchorSite, navigate to AI, Storage, and Compute → AI Assistants in the left hand menu. 
Create a Voice AI Agent or edit an existing one, and in the “Calling” tab, choose your AnchorSite. European customers can save to any of London, Amsterdam, or Frankfurt to reduce latency of Voice AI Agents. Other options include Chicago, Ashburn, San Jose, Toronto, and Sydney. 

Save your agent and experience sub-200 ms, GDPR-ready Voice AI across Europe today.


Telnyx deploys Paris PoP ot bring GPU-powered low-latency Voice AI to Europe delivering engaging, human-like experiences. 

Telnyx deploys Paris PoP ot bring GPU-powered low-latency Voice AI to Europe

Ultra-Low Latency and GDPR-Ready Voice AI Now Live for European Customers

Telnyx Unleashes Sub-200 ms GPU-Powered Voice AI Across Europe with New Paris PoP

Launching an [RCS chat](https://telnyx.com/products/rcs) with your brand is now as easy as scanning a code or tapping a link. With RCS Deeplinks, you can direct customers straight into an RCS conversation with a specific agent, no extra steps or search required.

### Key Capabilities

Users can generate links targeting a specific RCS agent via: 
- Agent ID
- Optional fallback parameters
- Custom payloads (e.g. pre-filled text). 

RCS Deeplinks works across Android devices with native RCS support and Google Messages. 

### Where to use RCS Deeplinks

Every click you remove from the customer journey improves conversion. Whether you’re driving sales, onboarding, or support, deep links let you create a smooth handoff into a rich messaging experience.

A retailer could place QR codes on in-store displays that instantly open an RCS chat for product questions. Mobile apps might add “Contact Support” buttons that launch pre-filled RCS conversations, streamlining onboarding or troubleshooting. Even Google Business listings can link directly into RCS chats, enabling customers to start rich, interactive conversations in a single tap.

### Get started
RCS users can generate deeplinks with [our API](https://developers.telnyx.com/api/messaging/generate-rcs-deeplink). 

With RCS Deeplinks, you can direct customers straight into an RCS conversation with a specific agent.

RCS Deep Links for Instant Conversations

We are excited to announce a major upgrade to Telnyx AI Agents: built-in versioning and canary deployments. You can create multiple versions of your agent, making it easier than ever to safely experiment, compare performance side-by-side, and gradually roll out updates using canary testing all without disrupting your production traffic.


## What’s new



* Create and manage multiple versions of your AI Agent.
* Isolate and iterate on prompt and logic variations.
* Compare performance across versions in real-world environments.
* Use canary deployments to route a portion of traffic to a new version.
* Scale up rollout based on performance and confidence.


## Key benefits



* **Faster iteration**: Develop and test new ideas without disrupting your production agent.
* **Smarter rollouts**: Send a small slice of traffic to a new version to validate improvements before full deployment.
* **Reliable decision-making**: Compare version performance across metrics and real usage.
* **Rollback-safe workflows**: Revert to a known good version at any time.
* **Clear version control**: Track changes, experiment safely, and maintain a clean audit trail.


## Why it matters

Improving your AI Agent often means refining prompts, updating logic, and experimenting with new behavior. Without versioning, every change carries the risk of breaking existing flows. With these new versioning and canary deployment tools, you can isolate updates, compare performance, continually go back and refine each version, and ship improvements only when you’re ready. This gives you even greater confidence and control, helping you develop safely, quickly, and effectively. 


## Getting started

It only takes a few minutes to get started.



1. [Sign up](https://telnyx.com/sign-up) or [log in](https://portal.telnyx.com/#/login/sign-in) to your Telnyx Mission Control Portal account.
2. Navigate to the AI Assistant section.
3. Choose which AI Agent you want to edit.
4. Create a new version of the agent.
5. Move to the Test tab and run a test comparing the two versions of the Agent against each other.
6. Launch a canary deployment to direct partial traffic to the new version of the Agent.

Safely test and roll out updates to your AI Agents with new versioning and canary deployment features from Telnyx. Compare performance, isolate changes, and iterate faster without risking your production environment.

Version control and canary deployments for Telnyx AI Agents

Telnyx AI Agents now support built-in versioning and canary deployments, making it easy to experiment, test updates in production, and roll out changes safely.

Versioning and canary deployments for AI Agents

We are excited to share a powerful new capability for Telnyx AI Agents: native integration with MCP (Model Context Protocol) servers. This update allows your AI Agents to connect directly with any public API that offers an official MCP server. Whether you are building with open-source models, public APIs, or internal systems, integration is now faster, simpler, and more reliable.


## What’s new



* Native support for connecting AI Agents to public APIs via official MCP servers.
* Automatic configuration and routing through compliant MCP endpoints.
* Seamless compatibility with third-party tools and services that support the MCP standard.


## Why it matters

Connecting AI Agents to external APIs typically requires complex configuration and custom integrations. With native MCP server support, that setup becomes significantly easier. For any supported API, this is a major reduction in friction compared to using our webhook tool. The webhook tool still offers broader coverage and, in some cases lower latency because it can connect to any RESTful API. However, MCP makes it much simpler to get started with popular integrations.

One especially valuable integration now supported is Zapier. By connecting Telnyx AI Agents to Zapier as an MCP server, you gain access to thousands of automation workflows across tools like GSuite, Salesforce, Zendesk, and many others. This dramatically expands what your agents can do without needing to write additional code. 


## Getting started

It only takes a few minutes to get started.



1. [Sign up](https://telnyx.com/sign-up) or [log in](https://portal.telnyx.com/#/login/sign-in) to your Telnyx Mission Control Portal account.
2. Navigate to the AI Assistant section.
3. Click on the MCP server tab.
4. Configure the MCP server.
5. Select allowed tools.
6. Add the MCP server to your agent.

Telnyx AI Agents can now integrate directly with MCP servers, enabling faster, simpler connections to public APIs like Zapier, GSuite, Salesforce, and more. Build smarter voice agents without complex setup.

Telnyx AI Agents now support MCP server integrations

Telnyx AI Agents now support native integration with MCP servers, making it easier than ever to connect with public APIs and automation tools like Zapier. Streamline development and expand your agent’s capabilities with minimal setup.

Allowing AI Agents to integrate with MCP servers

We are excited to announce that Telnyx AI Agents now feature built-in noise suppression, taking voice quality to a new level. This enhancement automatically filters out unwanted background sounds, so your AI-powered conversations come through clearer than ever, no matter where your users are.


## What’s new



* Noise suppression is now enabled by default for all AI Agents.
* No additional configuration is required. Enjoy a noticeably cleaner audio experience on every call.


## Key benefits



* **Crystal-clear conversations:** Users easily hear your AI Agent’s voice without interference from background noise.
* **Professional, reliable calls:** Maintain high-quality, distraction-free audio in any environment, building trust with your customers.
* **Effortless improvement:** No setup or changes required. Your agents instantly benefit from noise suppression on every call.
* **More natural interactions:** Clean audio creates a smoother, more human-like experience, making your AI-powered conversations feel authentic and engaging.


## Why it matters

AI conversations happen everywhere—on busy streets, in crowded offices, and with a range of devices. Noise suppression ensures your agents sound crisp and professional, cutting through background distractions and keeping every conversation focused. The result is smoother, more natural voice interactions that users trust and prefer. 


## Getting started

No action is needed. Noise suppression is active automatically for all Telnyx AI Agents. [Sign up](https://telnyx.com/sign-up) or [log in](https://portal.telnyx.com/#/login/sign-in) to your Telnyx account to experience the upgrade.

Telnyx AI Agents now include built-in noise suppression to deliver cleaner, more natural voice interactions. Learn how this update improves call quality and customer experience.

Boost voice clarity with built-in noise suppression for Telnyx AI Agents

Telnyx AI Agents now come with built-in noise suppression that filters out background distractions automatically. This update delivers clearer, more natural voice interactions without any extra setup.

Enabling noise suppression for AI Agents

Telnyx is excited to now support built-in testing for AI Agents. You can run structured tests and scenarios to validate your agent’s behavior before going live. This makes it easier than ever to build reliable, intelligent agents with confidence.    


## What’s new



* A dedicated Test tab in the AI Assistant Builder. 
* Configure test scenarios and pass/fail criteria using natural language.
* Trigger a stimulated conversation with the Agent.
* Compare results over time as you update your Agent.
* Run tests and see pass/fail results to validate expected behavior.
* Experiment safely without affecting production.


## Key benefits



* **Controlled environment for rapid testing**: Try out changes to prompts, logic, or memory without affecting production.
* **Safer development workflow**: Run tests in isolation to catch issues before they impact customers.
* **Faster iteration**: Validate changes to logic, prompts, or memory handling in seconds.
* **Higher confidence in deployments**: See what’s working (and what’s not) before you ship to production.
* **Repeatable, structured testing**: Build a library of test scenarios to support regression testing as your agent evolves.


## Why it matters

Iterating on AI Agents requires constant updates to prompts, logic, and workflows, but without testing, every change carries the risk of breaking your assistant. With Telnyx’s built-in testing, you can confidently validate your agent’s responses under specific scenarios and track improvements or issues over time. It’s the foundation for building high-quality, production-ready agents.


## Getting started

It only takes a few minutes to get started.



1. [Sign up](https://telnyx.com/sign-up) or [log in](https://portal.telnyx.com/#/login/sign-in) to your Telnyx Mission Control Portal account.
2. Navigate to your AI Assistant.
3. Switch to the Test tab.
4. Click Create Test and then input the variables.
5. Run the test.

Telnyx now supports built-in testing for AI Agents, enabling teams to create test scenarios, run pass/fail validations, and safely iterate before production. Boost reliability and speed up development with structured testing tools.

Structured testing now available for Telnyx AI Agents

Telnyx just launched structured testing for AI Agents. Teams can now create natural-language test scenarios, define input variables, simulate conversations, and validate behavior before pushing changes to production all in one dedicated testing environment.

Testing for AI Agents

You can now list, modify, and test RCS agents directly via the [Telnyx RCS API](https://developers.telnyx.com/api/messaging/list-all-rcs-agents). Manage agent profiles, update webhooks, and invite test numbers, all without touching the Google RBM console.

### Why it matters
This is a big step toward fully automating your RCS setup and management. For teams managing multiple brands or regions, API-based agent control means faster rollouts and fewer manual steps.

**Key Capabilities:**
- List & retrieve your RCS agents
- Modify agent webhook URLs
- Invite test numbers for pre-launch validation

You can get started managing your RCS Agents[ via API](https://developers.telnyx.com/api/messaging/modify-an-rcs-agent). 

List, modify, and test RCS agents directly via the Telnyx API. 

Release notes