How can I access xAI?

Recorded access details include API documentation, Environment variables and the 1 API protocols.

Which models are available from xAI?

xAI currently lists 6 models. The model table below shows the latest releases first.

First party

xAI is a First party provider with 6 models across 6 offerings.

Custom

Organization	Families	Models
xAI	2	6

6 of 6 model versions

Model	Organization	Family	Provider model ID	Context	Max output	Input	Output	Reasoning	Tool call	Structured	Temperature	Weights	Pricing	Released	Updated
Grok 4.5 xai/grok/4-5	xAI	Grok	grok-4.5 Custom · Streaming	500K	500K	TextImageDocument	Text	Yes	Yes	Yes	Yes	Closed	input $2/M · cache read $0.3/M output $6/M	2026-07-08	2026-07-08
Grok Imagine Video 1.5 xai/grok/imagine-video-1-5	xAI	Grok	grok-imagine-video-1.5 Custom · Streaming	1K	-	TextImageVideo	Video	-No	-No	-No	-No	Closed	input $0.01/image output $0.08/video second	2026-05-30	2026-05-30
Grok 4.3 xai/grok/4-3	xAI	Grok	grok-4.3 Custom · Streaming	1M	30K	TextImageDocument	Text	Yes	Yes	Yes	Yes	Closed	input $1.25/M · cache read $0.2/M output $2.5/M	2026-04-17	2026-06-11
Grok Build 0.1 xai/grok-build/0-1	xAI	Grok Build	grok-build-0.1 Custom · Streaming	256K	256K	TextImageDocument	Text	Yes	Yes	Yes	Yes	Closed	input $1/M · cache read $0.2/M output $2/M	2026-04-16	2026-06-11
Grok 4.20 (Non-Reasoning) xai/grok/4-20-0309-non-reasoning	xAI	Grok	grok-4.20-0309-non-reasoning Custom · Streaming	1M	30K	TextImageDocument	Text	-No	Yes	Yes	Yes	Closed	input $1.25/M · cache read $0.2/M output $2.5/M	2026-03-09	2026-03-09
Grok 4.20 (Reasoning) xai/grok/4-20-0309-reasoning	xAI	Grok	grok-4.20-0309-reasoning Custom · Streaming	1M	30K	TextImageDocument	Text	Yes	Yes	Yes	Yes	Closed	input $1.25/M · cache read $0.2/M output $2.5/M	2026-03-09	2026-03-09