ModelClock
Capability change
Capability change announced Apr 1, 2026
Deepgram documents a capability change: “thought_signature field for Gemini function calling The Voice Agent API now includes an optional thought_signature field in function call messages.”
- Hosting route
- Deepgram platform
- Affected scope
- Not stated in the notice
- Announced
- Apr 1, 2026
- First seen by ModelClock
- Oct 3, 2026
What the provider published
developers.deepgram.com ↗New
thought_signaturefield for Gemini function callingThe Voice Agent API now includes an optional
thought_signaturefield in function call messages. Some Gemini models (3.0 and 3.1 families) require this as an additional function call identifier.
Read from the provider's text; the quote is the provider's exact lines.
