# Reinforcement Learning for Reasoning: Major Breakthroughs

> Published on ADIN (https://adin.chat/s/rl-reasoning-key-milestones-2022-2026-ku7n)
> Type: Timeline
> Date: 2026-07-20
> Description: Explore key RL milestones from RLHF origins to trillion-parameter zero-RL models shaping AI’s future.

Timeline with 14 events:
- 2022-01-27: Event
- 2022-11-30: Event
- 2023-05-29: Event
- 2023-05-31: Event
- 2024-01-18: Event
- 2024-09-12: Event
- 2024-12-05: Event
- 2025-01-20: Event
- 2025-01-22: Event
- 2025-02-24: Event
- 2025-03-25: Event
- 2025-07-11: Event
- 2026-07-15: Event
- 2026-07-16: Event