We’ve launched the beta version of our Conversation Flow! Key Features: ✅ Dynamic LLM Selection ✅ Precise Response Control ✅ Enhanced Node and Transition Definitions Get started with a pre-built template today and share your feedback🚀

Pumped to share that Retell AI is ranked #16 on @a16z ’s Top AI Apps 50 🎉 Every month we power 30M+ calls for 20,000+ businesses worldwide — reimagining call centers with AI voice agents that sound human and scale effortlessly. Proud to be building alongside amazing companies

🚨 Introducing the AI Apps 50: Startup Edition Ever wondered how startups are spending their money when it comes to AI? Our team at @a16z worked with @mercury to crunch the numbers and rank the top applications by spend. The list + what we learned from it👇

Claude Sonnet 4.5 is now live on Retell AI 🧡 With the new model, @AnthropicAI has significantly improved subject matter expertise in finance, healthcare, law, and STEM. If your voice agents handle specialized conversations like medical scheduling, financial advisory, legal

👉 New Feature Launch: User Roles You can now assign roles to members in your account, giving your team the right level of access and control. Here’s how roles break down: Admin: Full control over resources, billing, and organization settings Developer: Build/test agents,

🚀 Introducing Node KB Until now, Retell’s Knowledge Base worked only at the global level—meaning every query had to scan across all your docs. That slowed replies and sometimes pulled in the wrong info. With Node KB, each node in your flow can now have its own tailored

👉 New Feature Launch: Personal Info (PII) Redaction Security and compliance are critical in every call. With Retell’s new PII Redaction, sensitive data like names, addresses, DOBs, passwords, and PINs are automatically detected and removed from both transcripts and recordings.

🚀 New from Retell: You can now buy toll-free numbers for $5/mo and pick the exact number you want. Even better — they now come with native international calling to 14 countries. No more custom telephony setup, just call worldwide right out of the box. 🌍📞

In summary GPT-5: Intelligence unlock if latency improves‍ GPT-5 Mini: Lower cost, strong intelligence, good balance for real-time agents‍ GPT-5 Nano: Best for cost-sensitive businesses without needing a reasoning or latency boost

2. For lightweight, high-speed tasks For small tasks that still benefit from reasoning, GPT-5 Mini is a strong choice. But if your workflow is speed-sensitive and doesn’t require deep reasoning, stick with GPT-4.1 Mini. If cost is the top priority, GPT-5 Nano offers the

1. For high-intelligence, complex call use cases GPT-5 offers slightly higher intelligence compared to GPT-4.1 and GPT-4o, but at the cost of slower response times due to its reasoning capabilities. For most real-time voice agent use cases where speed is critical, GPT-5mini or

🩵 GPT-5 is now live on Retell We’ve broken down how the new GPT-5 family compares on latency, intelligence, and pricing — so you can pick the right fit for your voice agents. ⬇️

Introducing MCP Node 🚀 You can now connect your own MCPs and invoke tools seamlessly. 📽️ Full tutorial and guide: https://t.co/liZthoiulC

We’re Hiring world-class marketers and designers at Retell AI — $10K Referral Bonus. We’re building the future of call centers, and we’re hiring two incredible roles to help define how the world experiences our brand and product. Apply or refer: https://t.co/pEXDPVdhAg

🚀 Retell Launch Week Day 5: Cartesia Voice We’ve partnered with @cartesia_ai to bring your agents a lifelike, ultra-smooth voice experience. You can now set Cartesia as your default voice, or use it as an automatic fallback if your primary provider goes down.

🚀 Retell Launch Week Day 4: Analytics 2.0 You can now turn post-call analytics into visual charts. Such as appointment booking rate, interest level, or lead score. 📊 Add a new chart 🎯 Choose post call analytics metrics 🎨 Make a chart: column, bar, donut, or line 👉 Turn

Retell Launch Week (June 30 to July 4) 🚀Day 3: Warm Transfer 2.0. We’ve upgraded warm transfers to make handoffs smoother and smarter: 🎯 Human Detection Transfers only happen if a human picks up—no more voicemail drops. 🗣️ Whispers & Three-Way Messages Whispers: Just for the

Retell Launch Week (June 30 to July 4) 🚀Day 2 : Extract Variables in Real Time Before, Retell agents relied fully on LLMs to remember details like names or budgets—often good, but not always reliable. Now, agents can extract and store dynamic variables mid-call and reliably

Retell Launch Week (June 30 to July 4) Day 1: We're launching KB 2.0! Knowledge Base 2.0 Our Knowledge Base just got a major upgrade , now your AI agents retrieve smarter, faster, and more accurate answers, even in messy, multi-turn conversations. What’s better: • Smarter

Retell x OpenAI 🤝 OpenAI just spotlighted how we’re using GPT‑4o to automate real phone conversations—no scripts, no code, no hold music. 📉 80% cost reduction 🌟 90+ NPS 🚀 Live in days, not weeks Read the full