Grok 4.1 Fast
READER SUMMARYProduction tool-calling model with two-million-token context and first-party search, code, document, and MCP tools.
Why this model scores 77.3
Broad API reach and autonomous server-side tool chaining drive autonomy and deployment; hosted infrastructure preserves some access control.
News tied to Grok 4.1 Fast
The model score of 77.3 rates this model's risk profile. The overall Doom Index of 62.1 measures the recalibrated complete evidence corpus. These values answer different questions.
Each article's leave-one-out Doom Index contribution is divided equally among the exact models named on that article. This prevents multi-model evidence from being claimed in full on several model pages. Model risk scores are recalculated from their technical profile and related news, but never feed back into the overall index.
Grok 4.1 Fast adds fully autonomous agent tools
SpaceXAI released Grok 4.1 Fast with a two-million-token context and an API that lets it independently use web search, X search, code execution, documents, and MCP tools.
- Full item contribution
- +0.07
- Grok 4.1 Fast equal share
- +0.07
Model score history
- R1Doom Score 77.3
New exact model profile from dated model and Agent Tools API launch.
11 Aug 2026