Model Watch · xAI
Grok 4
3 models carry the Grok 4 name, 3 of them callable today. Here's what separates them, and what each one costs.
From xAI's own docs · updated 2026-09-05 10:32 UTC
The family started with Grok 4.5 on 2026-07-16 and the newest is Grok 4.6 from 2026-08-12. Running one of these for a month costs anything from $1.70 on Grok 4.3 to $3.52 on Grok 4.5, for identical work.
Every Grok 4 model
| Model | Status | Released | Context | In / 1M | Out / 1M | Your month |
|---|---|---|---|---|---|---|
| Grok 4.6 | released | 2026-08-12 | 500K | $2.00 | $6.00 | $3.52 |
| Grok 4.5 | released | 2026-07-16 | 500K | $2.00 | $6.00 | $3.52 |
| Grok 4.3 | released | — | 1M | $1.25 | $2.50 | $1.70 |
The highlighted row is the newest one xAI has actually released. The monthly figure is 700 words in and 500 out, twenty times a day, at list prices. Change the workload.
Which one should you be using?
Grok 4.6 is the newest released model in the family, out on 2026-08-12. Newer is not automatically better for your job, but it is usually the one the lab is optimising, and on this table it is rarely the most expensive.
Why there are so many numbers
A point release is a new model, not a patch. xAI ships a new one under the same family name when the training or the tuning changes, and the old one usually keeps working at its old price until it's deprecated.
That's why two models in this table can hold the same amount of text and cost different amounts. You're picking a specific model, not a family, and the API name in each model's page is what actually goes in your code.
What each one is for
- Grok 4.6The current flagship. Half the context of Grok 4.3 and nearly twice the price, which is an odd trade until you read the benchmarks. Prompts at or over 200K tokens bill double on every token in the request.
- Grok 4.5Identical pricing and context to 4.6, four weeks earlier. No reason to pick it now.
- Grok 4.3Twice the context of the flagship at a bit over half the price. xAI never posted a launch note for it, so there's no date to give you.
Keep reading
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