Is the xAI API compatible with OpenAI clients?

Yes. xAI offers an OpenAI-compatible endpoint, so most OpenAI client libraries work by changing the base URL and key.

Can I use the fast Grok variant through the API?

Not for the current model. xAI offers the fast variant of its newest Grok only inside Cursor and Grok Build; on the public API you use the standard model.

Model & API platforms

xAI (Grok API) pricing

Per team tecnici

xAI (Grok API) is priced per use rather than per month; the rate for each option is in the table below. Checked 22 set 2026 against the official pricing page.

Grok 4.7 a $2/$6 per 1M token con contesto da 500K — lavoro di conoscenza di livello frontier a un prezzo inferiore ai flagship Claude e GPT. Non è l'opzione più economica per volumi elevati; xAI riporta 38% su Terminal-Bench 4.0 e consuma molti token di ragionamento, quindi il costo per attività supera la tariffa del listino.

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Our take

Score 3.5 out of 5How we score

The xAI API gives you Grok models with a large context window at prices below the Claude and GPT flagships. It is a solid option for knowledge work over long documents; it is not the cheapest API per token.

Plans and prices

xAI (Grok API) plans, checked 22 set 2026. Official pricing page I prezzi sono indicativi e possono variare. Conferma sempre sul sito del fornitore.
Plan	Price	What you get
grok-4-7Our pick	Usage-based$2/1M input, $6/1M output for prompts under 200k tokens; $4/$12 above 200k; Grok 4.6 still served at the same price	500K context OpenAI-compatible endpoint Tool calls Reasoning effort low/medium/high/xhigh Fast variant only in Cursor and Grok Build

Pick this tier: grok-4-7

The current Grok model is the main option on the API; use the standard variant unless latency really matters.

What works

Large context window
Lower per-token price than the leading flagships
OpenAI-compatible endpoint
Tool calls supported

What to watch

The fast variant is not on the public API
Fewer model sizes than the biggest providers
Not the lowest-cost option for bulk work

Skip it if

You need the lowest cost per token
You are not building with an API
You want a consumer chat subscription

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xAI (Grok API) pricing questions

How much does xAI (Grok API) cost in 2026?: xAI (Grok API) is priced per use rather than per month; the rate for each option is in the table below. Checked 22 set 2026 against the official pricing page.
Is the xAI API compatible with OpenAI clients?: Yes. xAI offers an OpenAI-compatible endpoint, so most OpenAI client libraries work by changing the base URL and key.
Can I use the fast Grok variant through the API?: Not for the current model. xAI offers the fast variant of its newest Grok only inside Cursor and Grok Build; on the public API you use the standard model.

Reviewed 22 set 2026 by the Dapols team. Report a price change

Le nostre prove su questo strumento

Stato nel catalogo: Consigliato: può essere una scelta primaria in un piano
Prezzo ultima verifica: 22 set 2026
Capacità ultima revisione: 13 ago 2026
Affidabilità delle prove: Media: verificato, ma il fornitore cambia spesso i piani
Documentazione ufficiale: Leggi la documentazione del fornitore

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