Reasoning models are the 2025-2026 frontier. The signal is knowing they are trained (largely via RL on verifiable rewards) to produce long internal reasoning, and that they scale on a second axis: spending more compute at inference.
Updated Aug 2026 · Grounded in real Applied AI Engineer interview loops and written to a senior-engineer editorial bar.
Reasoning models are the 2025-2026 frontier. The signal is knowing they are trained (largely via RL on verifiable rewards) to produce long internal reasoning, and that they scale on a second axis: spending more compute at inference.
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