No free tier - verified October 18, 2026

Is the xAI Grok API free?

No. The xAI Grok API has no free tier: you load credits to start. Trains on your data: No (without your explicit permission).

Read from docs.x.ai. Compare every free LLM API

Offer: No free tier
Card required: Not stated
Trains on data: No
Verified: 2026-10-18

The offer

Offer class

No free tier

Recorded as: none

'Tier 0 | $0 (default)' is a rate-limit tier by cumulative spend, not free usage. No free or promotional credits are documented on the pricing, rate-limit or quickstart pages.

“Sign up for an account at console.x.ai, then load it with credits to start using the API.”

docs.x.ai

“Qualification is based on total revenue received through prepaid credit purchases or successfully fulfilled invoices.”

docs.x.ai

How to get it

Not stated

Card required

Not stated

Free limits

Values are copied exactly as the provider publishes them, units included. Not stated means the public docs give no value.

Per-model free limits: Not stated

Does it train on your data?

Without your explicit permission

No, not without explicit permission.

“SpaceXSI never trains on your API inputs or outputs without your explicit permission.”

Data terms - docs.x.ai

“By default, all API requests and responses are stored on our servers (encrypted at rest) for 30 days for auditing purposes in the event of suspected abuse or misuse. SpaceXSI does not train on this data, and it is automatically deleted after 30 days.”

docs.x.ai

Restrictions

Other restrictions: Not stated

Upgrade path

Tiers upgrade automatically on cumulative spend: Tier 1 "$50", Tier 2 "$250", Tier 3 "$1,000", Tier 4 "$5,000".

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