{
    "snapshot_id":  "materials_physics_benchmark_snapshot_2026-02-24",
    "generated_at_utc":  "2026-02-24T20:50:56.039717+00:00",
    "git":  {
                "commit":  "f4fb848fd7fa55be1b68d4e7592f1330553f1112",
                "short_commit":  "f4fb848f"
            },
    "workflow":  {
                     "strict_s2":  "strict scoring; family holdout; flux model",
                     "strict_s3":  "strict scoring; interaction holdout; flux model",
                     "external_s2":  "strict scoring; family holdout; flux + external baseline adapters",
                     "external_s3":  "strict scoring; interaction holdout; flux + external baseline adapters"
                 },
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                            "validation_dataset":  {
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                                                       "bytes":  918762
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                                                  "bytes":  36595
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                                                     "bytes":  13791
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                            "adapter_manifest":  {
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                                                   "bytes":  12416
                                               },
                            "output_strict_s2":  {
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                                                     "bytes":  43856
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                            "output_strict_s3":  {
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                                                     "bytes":  34602
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                            "output_external_s2":  {
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                                                       "bytes":  154678
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                                                       "bytes":  123100
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                    "external_s2_models":  {
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                                                             "theta_D_K_MAPE_pct":  15.679016250064555,
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                                                             "density_g_cm3_MAPE_pct":  5.569458936552751,
                                                             "kappa_W_mK_MAPE_pct":  122.92769695814138
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                                                              "B_GPa_MAPE_pct":  15.419080397690172,
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                                                              "density_g_cm3_MAPE_pct":  6.342549010398218,
                                                              "kappa_W_mK_MAPE_pct":  null
                                                          },
                                               "matbench":  {
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                                                                "B_GPa_MAPE_pct":  18.421377776809848,
                                                                "theta_D_K_MAPE_pct":  null,
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                    "external_s3_models":  {
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                                                            "kappa_W_mK_MAPE_pct":  1.3472957431855248
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                                               "aflow":  {
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                                                             "B_GPa_MAPE_pct":  14.588096515161245,
                                                             "theta_D_K_MAPE_pct":  14.104674294314218,
                                                             "v_sound_m_s_MAPE_pct":  30.058790391588317,
                                                             "density_g_cm3_MAPE_pct":  5.549314963318657,
                                                             "kappa_W_mK_MAPE_pct":  119.62713990295023
                                                         },
                                               "jarvis":  {
                                                              "overall_MAPE_pct":  10.935587148857675,
                                                              "B_GPa_MAPE_pct":  15.481607880010284,
                                                              "theta_D_K_MAPE_pct":  null,
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                                                              "density_g_cm3_MAPE_pct":  6.278007626756537,
                                                              "kappa_W_mK_MAPE_pct":  null
                                                          },
                                               "matbench":  {
                                                                "overall_MAPE_pct":  18.424710504864333,
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                                                                "density_g_cm3_MAPE_pct":  null,
                                                                "kappa_W_mK_MAPE_pct":  null
                                                            }
                                           }
                },
    "security_note":  "Internal script names, local paths, and command-line details removed for public export."
}