GPT-6 Astra, Grok 4.7, and SuperGrok Heavy Are Three Different Buys
GPT-6 Astra is a $10 and $50 API model. Grok 4.7 is $2 and $6. SuperGrok Heavy is a separate monthly plan. Here is which one a search for Astra is not.
If you landed here after searching for GPT-6 Astra, stop before you buy anything with Grok in the name. Astra is an OpenAI model announced on 3 September 2026. Grok 4.7 is an xAI model priced by the token. SuperGrok Heavy is a consumer subscription built around Grok 4 Heavy. They share a noisy news cycle and almost no product surface. A search spike does not merge three bills into one.
Why Astra searches keep landing on Grok pages
GPT-6 Astra is trending again. Google Trends data for the United States put related interest for astra well above 200,000 searches with a climb of more than 200 percent, and the related queries cluster around gpt 6, gpt astra, and gpt 6 astra. That traffic is about OpenAI’s announcement, not a same-day launch and not an xAI plan. When the SERP mixes vendor posts, third-party pricing blogs, and subscription stores, readers often treat the loudest brand on the page as the product they typed. It is not.
OpenAI published Astra at openai.com/index/gpt-6-astra/. The model id is gpt-6-astra. Standard API pricing is $10 per million input tokens and $50 per million output tokens. A Fast option can run up to about twice the speed at about twice the price. ChatGPT Plus, Pro, Business, and Enterprise can reach Astra, with Astra Pro on the higher ChatGPT tiers. Enterprise keeps it off by default. Azure and Bedrock are listed as deployment paths. None of that is a SuperGrok login.
What GPT-6 Astra is buying you
Astra is a model purchase, not a monthly Grok tier. You pay OpenAI (or a cloud reseller) for tokens or you meet it inside a ChatGPT plan that already includes the model. OpenAI’s own Terminal-Bench 4.0 figure puts Astra at 57.9 percent, ahead of Fable 5.1 at 55.8 percent and Sol at 37.3 percent. Computer use is the feature OpenAI is leading with in that launch story. This article does not invent a context window for Astra because OpenAI’s public summary for that number is not restated here as a hard fact.
Independent scoring tells a related but not identical story. Artificial Analysis Intelligence Index v4.3.2, covered by The Decoder on 21 September 2026, puts GPT-6 and Fable at 53 and Grok 4.7 at 46. The same outlet’s Terminal-Bench run shows Astra at 60 percent, Fable at 55 percent, and Grok 4.7 at 26 percent. Keep the 60 percent and OpenAI’s 57.9 percent apart. They are different evaluations of terminal work, not two prints of the same scorecard.
What Grok 4.7 is, and what it is not
Grok 4.7 arrived on 21 September 2026 as a text and image input model with text output. Under 200,000 tokens the public rate card is $2 per million input and $6 per million output. Context is 500,000 tokens. It is live in Cursor, Grok Build, the Grok app, and the xAI API. That list is a developer and chat surface list. It is not SuperGrok Heavy, and it is not Grok 4 Heavy.
Version numbers invite the wrong merge. Grok 4 Heavy is the multi-agent model associated with the Heavy consumer plan. Grok 4.7 is a later general model with its own token price and its own context figure. Paying for one does not load the other. If your tab still says Grok 4.6 on a consumer plan page, you are not looking at proof that Heavy secretly became Astra either.
What SuperGrok Heavy actually is
SuperGrok Heavy is a consumer plan at the top of xAI’s subscription ladder, commonly cited around $300 a month. Confirm the live figure on x.ai/pricing, because xAI has moved prices during 2026 and public cards do not always print every column the same way. The plan is built around Grok 4 Heavy, with up to eight collaborating agents, on the order of 500 video renders a day, and a 256K context figure cited for Heavy (some sources say up to 428K). It does not include API credit. It does not include GPT-6 Astra.
Kingy checked on 21 September 2026 and the consumer plan page still named Grok 4.6. Do not tell buyers that a Heavy login shows Grok 4.7 or Astra. Open the model label in the session you are actually using. A homepage launch post and a plan badge are not the same receipt.
Three products in one table
| GPT-6 Astra | Grok 4.7 | SuperGrok Heavy | |
|---|---|---|---|
| Vendor | OpenAI | xAI | xAI consumer plan |
| What you buy | API model (and ChatGPT access where enabled) | API and app model | Monthly subscription |
| List price shape | $10 / $50 per million tokens (Fast up to 2x speed at 2x price) | $2 / $6 per million under 200k tokens | About $300 a month, confirm on x.ai/pricing |
| Model id / core model | gpt-6-astra | Grok 4.7 | Grok 4 Heavy (plan still named Grok 4.6 on 21 Sep 2026) |
| Signature pitch | Computer use lead; OpenAI Terminal-Bench 4.0 at 57.9% | 500,000 token context; live in Cursor, Build, app, API | Up to 8 agents; ~500 video renders a day; 256K cited for Heavy |
| Includes the other two? | No | No | No Astra, no documented Grok 4.7 bundle, no API credit |
How to choose without mixing the carts
Choose GPT-6 Astra when the job is OpenAI’s computer-use path, Azure or Bedrock deployment, or a ChatGPT tier that already surfaces Astra Pro. Pay the $10 and $50 card when you are metering API calls, and remember Fast is a speed trade at roughly double the rate, not a different brand.
Choose Grok 4.7 when you want a cheap frontier text model with a half-million token window inside Cursor, Grok Build, the Grok app, or the xAI API. The Artificial Analysis gap versus GPT-6 and Fable (46 versus 53 on the index, and 26 percent versus 60 percent and 55 percent on that Terminal-Bench run) is real. Price and context still make 4.7 a different buy from a $300 plan.
Choose SuperGrok Heavy when you specifically want Grok 4 Heavy’s multi-agent pass, the large Imagine video allowance, and a subscription ceiling instead of a token meter. Skip Heavy if you arrived from an Astra search hoping the login would hand you gpt-6-astra. It will not. Skip Heavy if you only need Grok 4.7 in Cursor and you were about to pay a monthly fee for a model that is already on an API key.
A bounded way to test the consumer plan
If you still want to try the Heavy tier without treating list price as the only door, this site lists a SuperGrok Heavy 1 month plan at $120 against a $300 reference, with a 3 day warranty. It is an independent activation, not an xAI sale and not an OpenAI sale. It does not include GPT-6 Astra. It does not load API credit. It is not a promise that the session will show Grok 4.7. Check the model name after login, and still confirm the official reference on x.ai/pricing before you treat $300 as the live list.
Benchmarks without the merge error
Two terminal numbers travel with Astra right now. OpenAI’s Terminal-Bench 4.0 figure is 57.9 percent for Astra against Fable 5.1 at 55.8 percent and Sol at 37.3 percent. The Artificial Analysis run reported via The Decoder is 60 percent for Astra, 55 percent for Fable, and 26 percent for Grok 4.7. Quote both if you want, but never collapse them into one percentage and never attach either number to a SuperGrok Heavy badge. Heavy is not scored as Astra, and Astra is not sold as Heavy.
The index row is simpler. GPT-6 and Fable sit at 53. Grok 4.7 sits at 46. That gap is about models. A monthly plan does not close it by renaming itself after a trending search term.
Frequently asked questions
Does SuperGrok Heavy include GPT-6 Astra?
No. GPT-6 Astra is an OpenAI model with the id gpt-6-astra. SuperGrok Heavy is an xAI consumer plan built around Grok 4 Heavy. Buying Heavy does not grant Astra API access, ChatGPT Astra Pro, Azure Astra, or Bedrock Astra.
Is GPT-6 Astra the same product as Grok 4.7?
No. Astra is OpenAI’s September 2026 model at $10 and $50 per million tokens on the standard API card. Grok 4.7 is xAI’s 21 September 2026 model at $2 and $6 under 200k tokens with a 500,000 token context. Different vendors, different rate cards, different surfaces.
Will a Heavy login show Grok 4.7 or Astra?
Do not assume either. Kingy’s 21 September 2026 check still saw Grok 4.6 named on the consumer plan page. Astra will not appear as an OpenAI model inside an xAI subscription. Read the model label in your own session.
Which buy matches a search for GPT-6 Astra?
The OpenAI path: API at gpt-6-astra, ChatGPT tiers where Astra is enabled, or Azure and Bedrock. Grok 4.7 and SuperGrok Heavy are separate purchases for xAI workloads. If you only needed Astra, stop shopping Grok plans.