xAI changelog: December 2025

2 releases from Dec 16 to December 16, 2025

Everything xAI shipped in December 2025, collected from official xAI sources. Each entry is dated and links to the page it came from.

December 2025 at a glance

December 2025 was xAI's 5th busiest month of the 12 months to then: 2 releases, close to its monthly average of 3. That was 1 release fewer than November 2025. Every release this month was API.

Releases

-1 vs November 2025

Rank of 12 months

5th

Average 2.5 a month

Most shipped

API

2 releases

Notable xAI launches in December 2025

APIDec 16
Speech to Speech API GA
General availability of Grok Speech to Speech API
Source: xAI Release Notes
APIDec 16
Grok Speech to Speech API
Grok Speech to Speech API is generally available. Visit Grok Speech to Speech API for guidance on using the API.
Source: xAI Release Notes

All xAI releases in December 2025

Newest first. Each entry links to the official page it came from.

December 20252 releases

Dec 16

Speech to Speech API GA

General availability of Grok Speech to Speech API

Grok VoiceAPISource: xAI Release Notes

Dec 16

Grok Speech to Speech API

Grok Speech to Speech API is generally available. Visit Grok Speech to Speech API for guidance on using the API.

Grok VoiceAPISource: xAI Release Notes

Where December 2025 sits

xAI releases per month, for December 2025 and the 11 months before it. A taller bar means more releases that month; the dated entries for each month are on its own page.