Newer Grok 4.1 models have shipped; this profile remains specific to Grok 4
xAI transitions to Grok 4.1 while technical documentation anchors the previous Grok 4 iteration.
Newer Grok 4.1 models have shipped; this profile remains specific to Grok 4 — verified by the OnAirToday AI Progress Tracker against xAI's published documentation.
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The OnAirToday AI Progress Tracker recorded a verified change to xAI's Grok 4 (version grok-4): Newer Grok 4.1 models have shipped; this profile remains specific to Grok 4.
Grok 4 is xAI’s July 2025 reasoning model for advanced problem-solving, coding and tool-assisted workflows. Newer Grok 4.1 models have shipped; this profile remains specific to standard Grok 4 rather than Grok 4 Heavy or subsequent variants.
What changed in this review:
- Added the documented 256,000-token context window.
- Added standard API pricing: $3 per million input tokens and $15 per million output tokens.
- Updated GPQA Diamond to the vendor-published 87.5%.
- Added Humanity’s Last Exam at 25.4%, without tools.
- Capability score 60 → 63
- Flaws and limitations updated
Teams building on Grok 4 should confirm limits, pricing and benchmark coverage against the vendor's own documentation before relying on these figures.
The full profile — capabilities, benchmark citations, known flaws and risk guidance — is on the tracker at /ai-models/grok-4.
References:
- https://x.ai/news/grok-4
- https://docs.x.ai/docs/models
- https://aider.chat/docs/leaderboards/
- https://x.ai/news/grok-4-1
Generated insight by OnAirToday AI
The release of Grok 4.1 marks a pivotal step in xAI’s iterative deployment strategy to enhance reasoning capabilities and real-time data integration. Maintaining clear documentation of model versions is essential for developers to ensure stability and compatibility in their AI workflows.
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