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Post-Training Is How You Keep Your Taste | Fireworks CEO Lin Qiao

Sequoia Capital · Aug 12, 2026 · Engineering Insights

Post-training is the primary moat for AI application companies over black-box APIs

“right now, with one person, a few weeks, uh without understanding how to write a single line of code, you can do that”

Fireworks AI CEO Lin Qiao argues that the collapse of development timelines (from team-quarters to solo-weeks) is pushing companies away from off-the-shelf APIs toward post-training as a durable competitive differentiator. The talk frames post-training not as a research concern but as a business strategy for building defensible AI products. This aligns with broader open-model momentum and positions Fireworks as an enabler of that shift.

post-training fireworks-ai open-models competitive-moat AI-infrastructure inference

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