Aaron RogersCo-founder, hardware · River AIFounder↗Both at River AI

Engineer · Founder
River AIAug 2026-present
Prometheus2025-2026
OpenAI2024-2025
SpaceXAIMay 2023-Jun 2024
OpenAI2021-2023Work and education history is primarily focused on AI-relevant roles and may not be comprehensive.
Reported GPT-4's capabilities, limitations and safety evaluations as a text-and-image input model.
Named uptime and stability lead; credited for distributed training infrastructure, hardware correctness and training-run monitoring.
Founding role and engineering infrastructure leadership at xAI.
Based on public sources. If accuracy is important, verify details using the links or references.
For corrections, updates, or requests to remove information, contact us.
Reviewed August 9, 2026 · Checked for accuracy and new information.