Machine Heart
Apr 14, 2026 · Artificial Intelligence
The Hidden Cost of Cheaper LLMs: Why Extra Reasoning Tokens Make Them More Expensive
A recent study by researchers from Stanford, UC Berkeley, Carnegie Mellon, and Microsoft reveals a price‑reversal phenomenon where lower‑priced large language models incur higher actual costs because they consume far more reasoning tokens, making true cost prediction highly unpredictable.
AI costLLMcost unpredictability
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