Model prices / SpaceXSI (xAI)

Grok 4.3 API pricing

Official API pricing for Grok 4.3 (SpaceXSI (xAI)) on SpaceXSI (xAI) API: cache and off-peak prices, context length, open weights and regional availability, with sources and check dates.

Context: 1M
Max output: —
Open weights: No
Current version: —

GLOBAL · USD SpaceXSI (xAI) API

grok-4.3

Tier	Input	Cached input	Cache write	Output
Prompt <200K	$1.25≈¥8.358	$0.2≈¥1.337	—	$2.5≈¥16.72
Prompt ≥200K	$2.5≈¥16.72	$0.4≈¥2.675	—	$5≈¥33.43

Mainland China Not statedOutside China YesOfficial payment Card, Bank transfer

per 1M tokens · Source 2026-10-17

Once the prompt reaches 200K tokens, every token in the request is billed at the higher rate. Batch (20% off) not listed. Not available on the US regional endpoint (currently grok-4.7 and grok-4.6 only)

Source

https://docs.x.ai/developers/models/grok-4.3 · 2026-10-17

≈ marks values converted at the ECB reference rate, for comparison only; the published currency is authoritative.