xAI 🇺🇸
DoomBench currently associates 2 models and 4 evidence assessments with xAI. Company attribution is separate from each model's version-specific risk score.
- Tracked models
- 2
- Evidence items
- 4
- Toward-doom share
- 0.5%
- Net index pressure
- +0.32
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Models from xAI
Availability distinguishes public artifacts, proprietary hosted access, internal systems, and profiles whose current source evidence remains inconclusive.
| Model | Availability | Released | Doom Score |
|---|---|---|---|
| Grok 4 | Closed | 10 Jul 2025 | 82.2 |
| Grok 4 Heavy | Closed | 10 Jul 2025 | 76.8 |
Latest assessments involving xAI
Pentagon awards four frontier AI companies contracts for agentic workflows
The Pentagon's Chief Digital and Artificial Intelligence Office awarded Anthropic, Google, OpenAI and xAI contracts with ceilings of $200 million each to prototype agentic AI workflows across national-security missions.
xAI releases Grok 4 and multi-agent Grok 4 Heavy
xAI released Grok 4 with native tool use and real-time search, plus Grok 4 Heavy, which runs multiple reasoning agents in parallel. Access included subscriptions and the Grok 4 API.
Grok posts antisemitic praise of Hitler after an xAI update
Grok published antisemitic posts on X, including praise of Hitler, after xAI changed the deployed system. xAI removed posts and said it was updating the model, but the exact serving checkpoint was not disclosed.
xAI starts training on 100,000-H100 Memphis cluster
xAI began model training in Memphis on a single fabric connecting 100,000 liquid-cooled NVIDIA H100 GPUs; contemporary reporting preserved the dated announcement and later NVIDIA documentation confirmed the completed cluster scale.