Text-to-Speech API
The Text-to-Speech API is now generally available. Generate natural-sounding speech from text with Grok.
xAI changelog: March 2026
8 releases from to
Everything xAI shipped in March 2026, collected from official xAI sources. Each entry is dated and links to the page it came from.
March 2026 at a glance
March 2026 was xAI's busiest month of the 12 months to then: 8 releases, about 2.8× its monthly average of 3. That was 8 releases more than February 2026. Releases were spread across API (3), Model (3) and Developer Tools (2).
Releases
8
+8 vs February 2026
Rank of 12 months
1st
Average 2.8 a month
Most shipped
API
3 releases
Notable xAI launches in March 2026
- Model
Grok 4.20 and Grok 4.20 Multi-agent are live
For more details on Grok 4.20 Multi-agent, check out the docs
Source: xAI Release Notes - Model
Grok 4.20 Beta and Grok 4.20 Multi-agent Beta are available
xAI added Grok 4.20 Beta and a Grok 4.20 Multi-agent Beta to the xAI Enterprise API, expanding the official model lineup for enterprise users.
Source: xAI Release Notes - Model
Grok 4.20 and Grok 4.20 Multi-agent are live
xAI made Grok 4.20 and Grok 4.20 Multi-agent live in the API, extending the Grok lineup with multi-agent support for developers.
Source: xAI Release Notes
All xAI releases in March 2026
Newest first. Each entry links to the official page it came from.
March 20268 releases
Text to Speech API GA
General availability of Text-to-Speech API
Grok 4.20 and Grok 4.20 Multi-agent are live
For more details on Grok 4.20 Multi-agent, check out the docs
Batch API Updates
The Batch API now supports image generation , image editing , and video generation in addition to chat completions. Both server-side tools and client-side function tools are also now supported in batch requests. Image and video URLs in batch results expire after 1 hour. Batch AP…
Batch API JSONL Support
JSONL file upload support for Batch API
Batch API Expansion
Batch API support for image/video generation and chat completions
Grok 4.20 Beta and Grok 4.20 Multi-agent Beta are available
xAI added Grok 4.20 Beta and a Grok 4.20 Multi-agent Beta to the xAI Enterprise API, expanding the official model lineup for enterprise users.
Grok 4.20 and Grok 4.20 Multi-agent are live
xAI made Grok 4.20 and Grok 4.20 Multi-agent live in the API, extending the Grok lineup with multi-agent support for developers.
Where March 2026 sits
xAI releases per month, for March 2026 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.
Other companies in March 2026
30 of the companies we track shipped in March 2026; xAI ranks 7th by number of releases.
Newsletter
Stay ahead of the month's AI releases without living in every company feed.
One monthly digest of the sharpest launches, model drops, and product moves from every company we track, delivered in one clear read.
Monthly signal
The standout launches, model drops, and platform moves worth tracking.
Zero feed fatigue
One tight read instead of bouncing between company blogs and timelines.
Built for operators
Clear summaries you can scan fast and forward to the team when needed.
Monthly dispatch
Subscribe to the newsletter
Get a clean monthly dispatch covering the launches that mattered, not every minor product breadcrumb.
Monthly digestMajor launchesFast summaries
One email each month, tuned for signal over noise.