Closed Models Often More Expensive Per Task Due to Token Inefficiency, Says a16z Partner

davidyin44 · x · 2026-08-07

Martin Casado, Partner at a16z, shared an interesting graph analysis from SiliconData. The data suggests that when comparing the actual cost per task rather than just the token price, closed-source models are often more expensive than open-source ones.

This is because closed models are highly "token inefficient," consuming more computational resources to complete the same tasks, contradicting the intuition that closed models are cheaper due to economies of scale.

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