Post-Training Data Becomes the Bottleneck
As gains from raw scale flatten, high-quality post-training and reinforcement-learning data becomes the scarce input, and a specialized vendor market will form to supply it.
forming · confidence 40 · Emerging (watchlist) · tracking since August 1, 2026 · updated August 1, 2026
Why the conviction moved
- Aug 1Strengthened +6
A GeneBench-Pro co-author left OpenAI to start a venture selling specialized reinforcement-learning datasets for post-training, arguing data quality now limits model gains more than scale (per the edition report). A named researcher spinning out a dedicated RL-data vendor is direct evidence the specialized supply market the thesis predicts is forming.
Source trail
Supporting · August 1, 2026
A GeneBench-Pro Co-Author Leaves OpenAI to Build a Startup Selling Reinforcement-Learning Data
A GeneBench-Pro co-author left OpenAI to start a venture selling specialized reinforcement-learning datasets for post-training, arguing data quality now limits model gains more than scale (per the edition report). A named researcher spinning out a dedicated RL-data vendor is direct evidence the specialized supply market the thesis predicts is forming.
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