# RL Post-Training Drives Reasoning

Reinforcement-learning post-training remains the durable source of reasoning gains because its benefit lives in learned representations, making the expensive RL stage hard to shortcut through supervised imitation.

- Conviction: 40 / 100 (forming)
- Horizon: Emerging (watchlist)
- Tracking since: 2026-07-31T00:00:00.000Z
- Last updated: 2026-07-31T06:02:07.324Z
- Canonical: https://polylog.news/ai/trends/rl-post-training-reasoning-gains
- Publisher: Polylog
- Affected regions: Global