Model board / Grok 4.5

Verified 2026-09-03 against the provider's own page. Prices are USD per 1M tokens, list rate — no committed-use, enterprise or volume discount.

at/above 200K input: $4.00 in / $0.60 cached / $12.00 out. Superseded by Grok 4.6 on 2026-08-12 at the same headline rate, but 4.5 keeps the cheaper $0.30 cached-input rate

max output not stated on the models page

Watch out

Everything doubles at 200K input — the big window costs 2x to actually use

What we would use it for

Mid-price frontier with a 500K window

What this has cost, week by week

Output price at each refresh since 2026-07-30. A vendor change is the provider changing its price. Our correction means this board changed what it prints and the provider's charge did not move — the two are never merged, because publishing the second as the first would be a price rise that never happened.

Nothing has moved since we started tracking it.

Where these numbers came from

• https://docs.x.ai/docs/models

No number on this page was written that was not read from one of those pages on 2026-09-03. If one is wrong, send us the source URL and it is corrected in the next weekly refresh, with a changelog line saying what was wrong — contact@naderu.com.

Discussed in Naderu Weekly

• The clock is now part of the bill — 2026-08-14

The rest of the board

This row sits alongside 53 others on the model board, refreshed every week. The same data as JSON, and the terms for using it, are at /board-data.