Telnyx Pricing Adjustment

Retell Telnyx phone number call rate will be adjusted from $0.015/min to $0.020/min.

This update will take effect starting September 1st.

Twilio phone number pricing will remain the same, with no changes to the current rate.

GPT-5 Models Now on Retell

We’ve added the latest GPT-5 family to Retell:

• GPT-5 → Best for complex workflows if latency improves in the future
• GPT-5 Mini → Lower cost, strong intelligence, great balance right now
• GPT-5 Nano → Cheapest option for cost-sensitive use cases without needing reasoning or latency gains
  

💡 Our testing shows GPT-5s handle transitions well but can be verbose in replies. Try them out and share feedback!

Two-Way SMS Agents (Retell Twilio or BYOT)

You can now connect chat agents to SMS using either a Retell Twilio number or your own Twilio setup.

With 2-Way SMS, you can:

• Send outbound messages to engage proactively
• Handle inbound SMS for real-time support

How to get started:

1. Apply for SMS (via Retell or BYOT Twilio number)
2. Link your chat agent for 2-way SMS
3. Start messaging 🚀

Retell SMS A2P Application Ultra Guide

• How to set up your business profile
• Brand registration process and volume threshold decisions
• Campaign creation with proper use case selection

See Docs

Personal Info (PII) Redaction

Security and compliance are critical in every call.

Retell now can detects and removes sensitive data (names, addresses, DOBs, passwords, PINs) from both transcripts and recordings.

Pricing: $0.01/min add-on

✨ How it works

• Go to Security & Fallback Settings → Personal Info Redaction
• Choose which PII types to redact
• Admins/devs can still toggle visibility for audits.

Toll-Free Numbers + Native International Calling

You can now directly purchase toll-free numbers on Retell for just $5/month, with the ability to search and pick the number you want.

Previously, international calling was only possible through custom telephony setups. Now, native Retell numbers support international calls to 14 countries, so you are no longer limited to the U.S.

See Docs

CPS Limits Per Provider

Protect deliverability and avoid carrier throttling by setting Calls-Per-Second caps per provider.

Per-provider control means you can balance load intelligently across Telnyx, Twilio, and your custom stack. The result is steadier throughput and fewer failed attempts.

See Docs

Webhook Timeout Controls

You now control webhook timeouts for both workspace-level and agent-level webhooks (default 5s)

Give longer-running tasks room to complete, or force fast failures when you prefer to fall back and retry.

Now you will experience:

• Reduced flakiness
• Healthy queues
• Predictable behavior under load

See Docs

Other Improvements

1. Retell Voices in OpenAI: Our signature Retell preset voices now register in the OpenAI voice set for a more consistent brand sound!
   
2. Update the call with external context is now live: You can now update the call and override dynamic variable.
3. https://docs.retellai.com/api-references/update-call#body-override-dynamic-variables

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