SUPERGROK HEAVY — KEY FACTS (AUGUST 2026)
● Price: $300/month or $3,600/year
● Model included: Grok 4 Heavy — NOT Grok 4.5 (which is in Plus and Standard)
● AIME 2025: 100% (Grok 4 Heavy) — vs Grok 4.5 Terminal-Bench 83.3%
● GPQA Diamond: 88.9% — graduate-level science questions
● LiveCodeBench: 93.3% — competitive programming
● Architecture: Multi-agent — 4 sub-agents debate before surfacing an answer
● Also included: Everything in Plus (Grok 4.5, Voice TF 2.0, Grok Build, Grok Imagine, X data)
● The question: Do you specifically need Grok 4 Heavy's reasoning? If yes → Heavy. If not → Plus at $100.
● API access: Grok 4 Heavy also available via xAI API — may be cheaper for low-volume power users
SuperGrok Heavy is the only consumer subscription that provides access to Grok 4 Heavy — xAI's multi-agent flagship model. The architecture is distinct from Grok 4.5: four specialised sub-agents (named Grok, Harper, Benjamin, and Lucas internally) debate responses before surfacing a single answer to the user. This multi-agent deliberation is what produces the 100% AIME 2025 score and 88.9% GPQA Diamond — performance that reflects genuinely hard mathematical and scientific reasoning, not just language quality. SuperGrok Plus and SuperGrok Standard both use Grok 4.5, which is a capable coding and voice agent model but a different product. You are not getting "more Grok 4.5" on Heavy — you are getting access to a fundamentally different model.
Heavy is worth $300/month if: You work on hard math, competitive programming, graduate-level science, or complex multi-step reasoning where Grok 4 Heavy's 100% AIME / 88.9% GPQA performance represents a genuine capability gap over Grok 4.5. Quantitative researchers, competitive programmers, and PhDs in STEM fields are the natural Heavy users.
Heavy is NOT worth $300/month if: Your primary use cases are general chat, content writing, image generation, or standard coding — Grok 4.5 in Plus ($100) handles all of these. The $200 premium over Plus is the cost of Grok 4 Heavy access specifically. Do not pay it for use cases where 4.5 is sufficient. Also check the xAI API: Grok 4 Heavy via API may be cheaper than Heavy subscription for low-volume users who only need Heavy for specific hard tasks.
Last updated August 2026. Related: SuperGrok Plus vs Standard → · SuperGrok Heavy vs Claude Max →