Question 1

Is xAI (Grok) or OpenAI cheaper?

Accepted Answer

As of the latest verified sweep, xAI (Grok)'s Grok-4.6 tier runs $2.00 against OpenAI's gpt-4o-mini tier at $0.15 — OpenAI is currently cheaper on that tier. Pricing on both sides is checked on a regular sweep, so see the live comparison above for the current numbers.

Question 2

Do xAI (Grok) and OpenAI have the same rate limits?

Accepted Answer

No — rate limits vary by vendor, tier, and account status, and are tracked separately from price for both xAI (Grok) and OpenAI. See the rate-limit rows in the comparison table above for the latest verified values for each.

Question 3

How often is this xAI (Grok) vs OpenAI comparison updated?

Accepted Answer

Continuously. VendorSpies checks both vendors' own published pricing and rate-limit documentation on a regular sweep and updates this page the moment a verified change is detected on either side — add a free watch on either vendor to get alerted directly.

xAI (Grok) vs OpenAI: pricing and rate limits compared

Pricing

Rate limits

Pricing

Rate limits

xAI (Grok) vs OpenAI FAQ