Grok 4 Heavy
Released 2025-07 · reasoning · 256K tokens · 3 benchmarks
Editorial notes
Lanzado julio 2025 con Grok 4 base. Multi-agent: spawnea varios Grok 4 en paralelo + agregacion. Primer modelo en cruzar 50% en HLE (con tools). +3-5pp tipico vs single Grok 4. Solo en SuperGrok Heavy ($300/mes), sin API directa para esta variante.
Spec sheet
- Company
- xAI
- Country
- US
- Type
- reasoning
- Release
- 2025-07
- Context
- 256K tokens
- Slug
- grok-4-heavy
Benchmarks (3)
Cite this model
BibTeX · APA
BibTeX
@misc{frontier-grok-4-heavy,
title = {Grok 4 Heavy},
author = {{xAI}},
year = {2025},
note = {Frontier Benchmarks AI atlas. Accessed 2026-05-08},
url = {https://frontierbenchmarks.com/models/grok-4-heavy}
} APA
xAI (2025). Grok 4 Heavy [Large language model]. Frontier Benchmarks AI. Retrieved 2026-05-08, from https://frontierbenchmarks.com/models/grok-4-heavy
Citation reflects the atlas page, not the original model paper. For the paper, see the "Resources" section above.