Vals AI: four of seven frontier models keep 80%+ scores at lowest reasoning effort for half the cost

ZacharyHuang12 · x · 2026-11-05

Eval firm Vals AI tested seven frontier models across three reasoning-effort levels on the Vals Index. Four models retained at least 80% of their performance at the lowest setting, at half the cost or less. A chart shows Gemini 4 Argon among the models compared across LOW/MEDIUM/HIGH settings. Practical takeaway: for most tasks, max reasoning effort is unnecessary — low settings get you near-identical results for roughly half the price. Full blog post linked in the thread.

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