xAI officially released its flagship model Grok 4.6 on August 12, 2026, succeeding Grok 4.5 with a focus on long-running agents and more ambitious interactive and visual work (source). If you use Grok, the first question is how its pricing changes—subscription and API are two separate systems, and this article covers both.
What Grok 4.6 is
Grok 4.6 is xAI's current flagship, and its key upgrade is staying coherent across many steps, not just higher benchmark scores. xAI describes it as strong at turning a broad idea into a working first version: researching unfamiliar domains, structuring the application, implementing core interactions, and refining through several rounds of feedback—checking its own work along the way (source).
In official evals, Grok 4.6 scores 61 on the AA Intelligence Index, matching ChatGPT's GPT-5.6 Sol (61), and lands near top closed models on CursorBench v3.2 (69.9%) and DeepSWE v1.1 (65.9%). For coding and research, this generation feels noticeably stronger than plain chat.
Grok 4.6 pricing comparison: subscription vs API
Grok 4.6 pricing comes in two separate systems: consumer subscription is a flat monthly fee, while the API bills per token. The API starts at $2/$6 per 1M tokens, while the subscription side starts at SuperGrok $30/mo and includes Grok 4.6.
| Channel | Price | Notes |
|---|---|---|
| API short context | $2 input / $6 output (per 1M tokens) | Official starting price |
| API cache hit | $0.50 input / $1.00 output | Cheaper for repeated context |
| API long context (≥200K) | $4 / $12 | Billed at the higher tier |
| API fast variant | $4 / $12 | Official 2x price |
| Subscription SuperGrok | $30/mo | Includes Grok 4.6 + Imagine + Voice |
| Subscription SuperGrok Plus | $100/mo | Higher usage + app building |
| Subscription SuperGrok Heavy | $300/mo | Top tier + X Premium+ |
API pricing is from docs.x.ai/developers/models; subscription pricing is from grok.com/plans.
How to choose a subscription: four tiers explained
The subscription's "best model" is Grok 4.6, unlocked from SuperGrok up—the tiers differ in usage and features, not the underlying model.
| Tier | Monthly | Annual (per month) | Key differences |
|---|---|---|---|
| SuperGrok | $30 | $25 | Grok 4.6 + HD 720p 30-second video + 5x chat length |
| SuperGrok Plus | $100 | $83.33 | Higher usage + 1080p video + one-prompt app building |
| SuperGrok Heavy | $300 | $250 | Highest usage + larger agent team + X Premium+ |
| Grok Business | $30/seat | $25/seat | Team collaboration + central management |
Annual billing saves about 16% across tiers (source).
Is it worth upgrading?
If you already use Grok, the real decision is "subscription or API," not "Grok 4.6 or not"—the subscription already runs Grok 4.6 by default. Three cases:
- Light to moderate use: SuperGrok at $30/mo is enough, and $25/mo annual is cheaper—covers chat, search, and image/video generation.
- Heavy coding or app building: Plus at $100/mo gives more generous usage and 1080p video, with one-prompt app building for turning ideas into products fast.
- Developers using Cursor or custom apps: go with the API and pay per token, starting at $2/$6; cache hits can cut repeated context costs to $0.50, more flexible than a flat subscription.
Caveats
Before you upgrade, watch these pitfalls—especially the 2x fast-variant pricing and the fact that subscription and API are two separate bills. Specifically:
- The API "fast variant" is 2x ($4/$12), and long context (≥200K) also bills at the $4/$12 tier—watch your bill.
- Subscription and API are separate bills; SuperGrok quota does not offset API charges, and you need a separate key at console.x.ai.
- Grok 4.6's knowledge cutoff is February 1, 2026, so real-time info relies on Web/X search tools.
- For the first week, Grok Build and Cursor offer 2x included usage—a limited-time promo that will revert.