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SOC 2 Type 1, Debugging mode and more features

1. SOC 2 Type 1 Certification

We've obtained the Vanta SOC 2 Type 1 certification and are currently awaiting the SOC 2 Type 2 certification.

2. Debugging mode

Click on "Test LLM" to enter debugging mode. It works with both single prompts and stateful multi-prompt agents. Now, you can test the LLM without speaking. You can create, store, and edit the conversation.

Pro tip:
For multi-states prompt agent, you can change the starting point to the middle state and test from there.

3. TTS Fallback

Your stability is our top priority. We've added the capability to specify a fallback for TTS. In case of an outage with one provider, your agent can use another voice from a different provider.

4. GPT-4o and pricing

The OpenAI GPT-4o LLM is now available on Retell. The voice interface API has not been released yet, but we plan to integrate it as soon as it becomes available. Stay tuned!

The pricing for GPT-4o is $0.10 per minute (optional).

See Pricing

5. Add Pronunciation Input

You can now guide the model to pronounce a word, name, or phrase in a specific way.  For example:  "word": "actually",      "alphabet": "ipa",      "phoneme": "ˈæktʃuəli".

This feature is currently available only via the API but will soon be added to the dashboard.

See Doc

6. Normalize for speech option

Normalize the some part of text (number, currency, date, etc) to spoken to its spoken form for more consistent speech synthesis.

See Doc

7. End call after user stay silent

Now you could set if users stay silent for a period after agent speech, then end the call.

The minimum value allowed is 10,000 ms (10 s). By default, this is set to 600000 (10 min).

See Doc

8. Miscellaneous Updates

  1. Voice Lists API: You can now get available voices via API. API References
  2. Ambient Sound: New ambient sound for the call center and ambient sound volume control.
  3. Asterisks Fix: We noticed that OpenAI models recently started generating asterisks, causing some problems. We have applied a fix to stop this.
  4. SDK Updated

Article

retell AI call

Retell AI lets companies build ‘voice agents’ to answer phone calls

Techcrunch