Lanyon benchmark says frontier models fail Euler solvers with oscillations and wrong accuracy
CatAstro_Piyush · x · 2026-08-04
Frontier models still struggle with Euler equation solvers
Lanyon’s second benchmark post says frontier models, including GPT-5.6 Sol, Fable 5, and Kimi K3, repeatedly fail on Euler equations. The failures include numerical oscillations, thermodynamic inconsistencies, incorrect orders of accuracy, and even code that does not run.
The post argues that mathematical misformalizations are common and token costs can reach tens of dollars per attempt. It claims Lanyon’s neurosymbolic architecture is the only approach that reliably produces robust solvers with end-to-end correctness proofs, while costing more than 100x less.
Related event: Frontier Models Struggle with Basic PDE Solvers, Benchmark Shows(2 posts)→
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