Synthflow Voice Engine 2.0

We are thrilled to announce the launch of Synthflow Voice Engine 2.0! This major update brings a host of new features and improvements designed to elevate your AI voice experience like never before.

1. Cartesia Voice Provider: Add crystal-clear, conversational voices that make every call feel more personal and engaging.

2. Adjustable Voice Speed: Tailor the voice speed to match customer preferences, making conversations more pleasant.

3. Warm Call Transfer: Seamlessly transfer calls to human agents without dropping the ball, enhancing customer.

4. Realistic Background Noises: Choose from office or cafe background sounds to add a layer of authenticity to your calls.

API endpoint to create custom actions

We've introduced a new API endpoint that allows you to create custom actions and assign them to your assistants via the API.

This provides greater flexibility and enables you to enhance functionality without leaving your development environment. Be sure to check out our documentation for more details.

Official Cal.com Integration

We are thrilled to announce our official integration with Cal.com! Synthflow is now also available in Cal.com's app store, allowing your AI phone call agent to seamlessly schedule appointments directly into live calendars with instant notifications. This integration simplifies appointment setting and enhances customer interactions by making the scheduling process more efficient and user-friendly.

To get started, learn how to connect your Synthflow account with Cal.com by following our step-by-step tutorial 👇

Backchanneling for Natural Conversations

Our AI assistant now supports backchanneling, allowing it to keep the conversation flowing naturally. When it hears interjections like "mm-hmm," "oh," "ah," "um," or "uh," it continues speaking, creating a more engaging and human-like dialogue.

Rate-Limiting & Queueing for Enhanced Reliability

To improve scalability and reliability, we've implemented new rate-limiting and queueing features. These updates ensure smoother operations during peak usage periods, helping you maintain a consistent, high-quality experience. The concurrency limits by tier are as follows:

• Starter: 10 concurrent calls

• Pro: 10 concurrent calls

• Growth: 20 concurrent calls

• Agency: 50 concurrent calls

• Enterprise: 100+ concurrent calls (with priority queuing)

Please note that for non-Enterprise tiers, exceeding the limit will result in a 429 HTTP error, and excess calls will not be processed. This feature currently applies only to outbound calls. If you're using workflows with GHL, HubSpot, Zapier, or other automation tools, we recommend implementing a delay mechanism when batching calls to ensure optimal performance. For custom limits on the Enterprise tier, please contact our sales team.

Time-Based Voicemail Detection

You now have the option to enable an extra check for voicemails, employing two methods: a time-based detection that identifies voicemail based on call duration, and an ML-based detection that uses machine learning for even more precise results. To enable these features, simply visit the Experimental tab in your dashboard.

Filter Words

You now have the ability to control the assistant's dialogue by specifying words or characters that should not be spoken during conversations, such as special characters like asterisks or dashes.

This feature also helps ensure that all communications meet your brand and regulatory standards.

Bring Your Own OpenAI API Key

We are pleased to offer you the option to use your own OpenAI API key with your assistants. This provides greater customization and flexibility, allowing you to manage costs and control usage according to your specific needs.

New Methods Added to Custom Actions

We've expanded the capabilities of custom actions by adding two new methods: PATCH and PUT. This enhancement allows for more versatile API interactions, enabling you to update and replace resources efficiently within your custom actions.

Branching the Outcomes in HubSpot

We've significantly enhanced our HubSpot integration to allow for more precise control over the outcomes of AI phone calls. The Call Status (Busy, Failed, Completed, etc.) and End Call Reason (Voicemail, Human Goodbye, etc.) are now enumerated fields. This change makes it much easier and more reliable to set up workflows in HubSpot that branch based on these specific call outcomes.

With this improvement, you can effortlessly create conditional logic in your HubSpot workflows to trigger specific actions—like sending a follow-up email or scheduling a callback—based on how each call concludes. This level of granularity empowers you to tailor your customer engagement strategies more effectively.

Check out our tutorial on how to utilize this feature to effectively branch the outcomes of AI phone calls.

New Agency Features

• Import Custom Actions to Subaccounts: Agencies can now import their custom actions to their subaccounts. This highly requested feature allows for easier management and deployment of custom functionalities across all your client accounts, saving valuable time and ensuring consistency across your services.

• Enable HubSpot Integration for Subaccounts: Agencies now have the option to enable the HubSpot integration for their subaccounts. This means you can provide a seamless CRM experience across all levels of your organization, ensuring that every team member has access to the tools they need for effective customer relationship management.

Synthflow Featured by ElevenLabs

Our users often tell us how much they appreciate the quality and human-like feel of our AI voice assistants. We're thrilled to share that we've been featured in ElevenLabs' recent blog post! This deep dive explores how Synthflow AI has enabled businesses to achieve unbelievable ROI through our no-code AI voice solutions.

It's a testament to our close collaboration with ElevenLabs in delivering incredible results together. Check out the full article.

Synthflow Academy is Now Live! 🎉

We’re excited to let you know that Synthflow Academy is now live! It’s your new hub for learning all about Synthflow’s AI voice technology. Whether you’re just starting out or looking to level up your skills, we’ve got you covered.

What You’ll Find at Synthflow Academy:

• Learn at Your Own Pace: Our self-paced courses let you dive in at your own speed, from basics to advanced features.

• Monthly Webinars: Join live sessions with our founding team for deeper insights, sneak peeks, and more.

• Community Live Builds: Get hands-on with interactive sessions where you can build and deploy AI voice projects with fellow community members.

Ready to start? Join Synthflow Academy today and take your skills to the next level!

Bug Fixes and Improvements

Recent fixes include:

• Reset Password Flow: We've resolved an issue where the reset password flow didn't work in some cases for subaccount users. It now functions seamlessly for all users.

• Improved Custom Action Prompt Editor: Some users reported that writing custom action prompts was laggy and slow. We've optimized the user experience to ensure that the cursor remains responsive, making the editing process smoother than ever.

WE’RE HIRING!

Are you ready to shape the future of AI with cutting-edge innovations? At Synthflow, we don't just follow trends; we create them. We're on the hunt for passionate, creative, and forward-thinking individuals to join our dynamic team. If you're driven by innovation and thrive in a fast-paced, collaborative environment, we want you!

Ready to make a difference? Visit our Careers Page to view open positions and submit your application. Join Synthflow, and be part of a team that's transforming the tech landscape.