# Grok 4 Heavy vs Grok 4 (2026): Benchmarks, Price & Verdict | Alher Tech

> Grok 4 Heavy vs Grok 4: head-to-head 2026 comparison across Arena Elo, MMLU, GPQA, HumanEval, context window and pricing. Verdict + use cases.

- Canonical page: https://alhertech.com/en/ai-comparison/grok-4-heavy-vs-grok-4/
- Site: Alher Tech (custom software, AI agents and SEO engineering, https://alhertech.com/)
- Contact: https://alhertech.com/en/contact/

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|  | Grok 4 Heavy | Grok 4 |
| --- | --- | --- |
| arenaElo | 1391 | 1341 |
| humanEval | 88.4 | 85.1 |
| sweBench | 55 | 50 |
| mmlu | 89.3 | 87.5 |
| gpqa | 74.5 | 57 |
| aime | 92 | 88 |
| Price in/out ($/M) | $15 / $60 | $3 / $15 |

## Our verdict

Heavy gains ~17 GPQA points over vanilla Grok 4 by running debate among copies of itself. Price is ~5× higher. For research and benchmark-driven evals, Heavy. For standard chat and social agents, regular Grok 4.

[Grok 4 Heavy](https://alhertech.com/en/ai-comparison/grok-4-heavy/) · [Grok 4](https://alhertech.com/en/ai-comparison/grok-4/) · [All AI model comparisons](https://alhertech.com/en/ai-comparison/)