Plans
Understand Grok 4.7 Fast limits
Grok 4.7 Fast is the same Grok 4.7 model served on faster infrastructure at twice the standard token rates. Official: Grok 4.7, Pricing — Grok 4.7 Fast, Cursor Models. Announcement: Introducing Grok 4.7.
Where Fast runs
| Surface | Fast |
|---|---|
| Cursor | Yes — billed through your Cursor plan |
| Grok Build (paid) | Yes — at 2× standard token rates |
| Grok Build free tier | Excluded |
Public xAI API (api.x.ai) |
Unavailable — no Fast model id is published |
The public models table lists grok-4.7 only. Do not invent a Fast API id.
xAI Fast rates (Build / Cursor docs)
| Prompt tokens | Input | Cached input | Output |
|---|---|---|---|
| Below 200k | $4.00 / 1M | $1.00 / 1M | $12.00 / 1M |
| Above 200k | $6.00 / 1M | $1.50 / 1M | $18.00 / 1M |
Long-context rates apply once a request's prompt exceeds 200k tokens (Pricing).
Cursor long-context Fast multipliers
On Cursor's Cursor Models pool rows for Grok 4.7:
| Condition | Multiplier vs standard |
|---|---|
| Long context (>256k input), up to 500k | 2× |
| Fast mode | 2× |
| Fast mode + long context (>256k) | 3× |
Published Cursor list prices for the four Grok 4.7 rows (input / cached / output per 1M):
| Row | Input | Cached | Output |
|---|---|---|---|
| Grok 4.7 | $2 | $0.5 | $6 |
| Grok 4.7 (Fast) | $4 | $1 | $12 |
| Grok 4.7 500k | $4 | $1 | $12 |
| Grok 4.7 500k (Fast) | $6 | $1.5 | $18 |
Cursor plan gate for Fast
Start (India) includes non-fast Grok 4.7 at fixed medium effort. Fast mode and effort controls require Pro or higher (Start).
Pitfalls
- Standard API calls use
grok-4.7— Fast is a Cursor / Build delivery option, billed at those surfaces' rates. - Cursor bills Fast through the Cursor plan; xAI's public API key path does not expose Fast.