Correct Levels 4/5 admission labels: Level 5 is admitted and difficulty-matched in all five domains; Level 4 is confirmed in four of five (mathir is not difficulty-matched). The published labels had been copied from each frozen dataset identity, which is not revised after confirmation. No data file is changed.

LEVELS_4_5.md

@@ -5,23 +5,27 @@ five domains each, in the same row surface as Levels 1-3: `problem`, `answer`
 (an executable specification carrying its own `verifier`), and
 `answer_mode_count`.
 
-## How these differ from Levels 1-3
-
-Levels 1-3 were published after a held-out confirmation that matched each
-domain to a fixed reference. **Levels 4 and 5 have not cleared that gate.**
-Every config here records, verbatim from its own dataset identity:
-
-```
-status:             frozen_pending_heldout_confirmation
-difficulty_matched: False
-```
-
-They are frozen, and each domain carries its own confirmation record, recipe
-and protocol hashes, and cross-source disjointness checks. They back the
-published base-model scale figure. What they do not yet carry is the held-out
-confirmation and the difficulty match that Levels 1-3 carry, so a result on
-Level 4 or 5 should not be reported as though it rested on the same warrant
-as one on Levels 1-3.
+## Admission status
+
+**Level 5 is admitted.** All five domains cleared held-out confirmation against
+128 fresh rows each, 4096 attempts per domain, replayed through the original
+graders, with worst margins of 0.43 to 0.92 of tolerance. Level 5 carries the
+same warrant as Levels 1-3.
+
+**Level 4 cleared four of five and is not admitted.** Countdown, graph colouring,
+pantry and python factors are difficulty-matched at 0.20, 0.34, 0.81 and 0.32 of
+tolerance. MathIR missed its pass@1 gate at 1.07 of tolerance: it measured 0.0864
+against a 0.0437 target on a 0.04 tolerance. A Level 4 MathIR result should not be
+reported as difficulty-matched; the other four Level 4 domains may be.
+
+The Level 4 MathIR dataset is sound and verified — the target is what is out of
+reach. It pairs pass@1 0.0437 with pass@8 0.2402, a heterogeneity gap of 0.060,
+while every 7B MathIR construction measured runs a gap of 0.169 to 0.398:
+success concentrates on few prompts, so raising pass@8 into its band drives
+pass@1 through its ceiling and the two gates cannot be satisfied together.
+Three difficulty mechanisms were measured — family choice, binding magnitude and
+denominator structure — and all fail the same way. The same law is
+difficulty-matched at 14B and ships in Level 5.
 
 ## Splits
 
@@ -36,13 +40,13 @@ and column order are unchanged.
 
 ## Configs
 
-- `level4_countdown` — status `frozen_pending_heldout_confirmation`, difficulty_matched `False`
-- `level4_graph_coloring` — status `frozen_pending_heldout_confirmation`, difficulty_matched `False`
-- `level4_mathir` — status `frozen_pending_heldout_confirmation`, difficulty_matched `False`
-- `level4_pantry_plan` — status `frozen_pending_heldout_confirmation`, difficulty_matched `False`
-- `level4_python_factors` — status `frozen_pending_heldout_confirmation`, difficulty_matched `False`
-- `level5_countdown` — status `frozen_pending_heldout_confirmation`, difficulty_matched `False`
-- `level5_graph_coloring` — status `frozen_pending_heldout_confirmation`, difficulty_matched `False`
-- `level5_mathir` — status `frozen_pending_heldout_confirmation`, difficulty_matched `False`
-- `level5_pantry_plan` — status `frozen_pending_heldout_confirmation`, difficulty_matched `False`
-- `level5_python_factors` — status `frozen_pending_heldout_confirmation`, difficulty_matched `False`
+- `level4_countdown` — difficulty-matched: yes, status `heldout_confirmed_difficulty_matched`
+- `level4_graph_coloring` — difficulty-matched: yes, status `heldout_confirmed_difficulty_matched`
+- `level4_mathir` — difficulty-matched: **no**, status `heldout_confirmed_not_difficulty_matched`
+- `level4_pantry_plan` — difficulty-matched: yes, status `heldout_confirmed_difficulty_matched`
+- `level4_python_factors` — difficulty-matched: yes, status `heldout_confirmed_difficulty_matched`
+- `level5_countdown` — difficulty-matched: yes, status `admitted_difficulty_matched`
+- `level5_graph_coloring` — difficulty-matched: yes, status `admitted_difficulty_matched`
+- `level5_mathir` — difficulty-matched: yes, status `admitted_difficulty_matched`
+- `level5_pantry_plan` — difficulty-matched: yes, status `admitted_difficulty_matched`
+- `level5_python_factors` — difficulty-matched: yes, status `admitted_difficulty_matched`

README.md

@@ -273,13 +273,12 @@ The original repository's Apache-2.0 source-code license is preserved in [licens
 
 ## Levels 4 and 5: admission status
 
-The ten Level 4 and Level 5 configs (`level4_countdown`, `level4_graph_coloring`, `level4_mathir`, `level4_pantry_plan`, `level4_python_factors`, `level5_countdown`, `level5_graph_coloring`, `level5_mathir`, `level5_pantry_plan`, `level5_python_factors`) are frozen and confirmed per domain, and they back the published base-model scale figure.
+**Level 5 is admitted.** All five domains cleared held-out confirmation against 128 fresh rows each, replayed through the original graders. Level 5 carries the same warrant as Levels 1-3.
 
-They have **not** cleared the held-out confirmation that Levels 1-3 cleared before publication, and they are not difficulty-matched against a fixed reference. Each records its own identity verbatim:
+**Level 4 cleared four of five domains and is not admitted.** Difficulty-matched: `level4_countdown`, `level4_graph_coloring`, `level4_pantry_plan`, `level4_python_factors`. Not difficulty-matched: `level4_mathir`, which missed its pass@1 gate at 1.07 of tolerance.
 
-```
-status:             frozen_pending_heldout_confirmation
-difficulty_matched: False
-```
+A result on Level 5, or on one of the four confirmed Level 4 domains, rests on the same warrant as one on Levels 1-3. A Level 4 MathIR result does not, and should not be reported as difficulty-matched.
+
+The Level 1 MathIR target is not reachable at 7B by any construction measured: the target pairs pass@1 0.0437 with pass@8 0.2402, a heterogeneity gap of 0.060, while every 7B MathIR construction runs 0.169 to 0.398, so the two gates cannot be met together. The dataset itself is sound and verified.
 
-A result measured on Level 4 or 5 should not be reported as resting on the same warrant as one measured on Levels 1-3.
+Every config records its own status; see `provenance/levels45_manifest.json`.

provenance/levels45_manifest.json

@@ -1,20 +1,32 @@
 {
-  "admission_caveat": {
-    "applies_to": [
-      "level4_countdown",
-      "level4_graph_coloring",
-      "level4_mathir",
-      "level4_pantry_plan",
-      "level4_python_factors",
-      "level5_countdown",
-      "level5_graph_coloring",
-      "level5_mathir",
-      "level5_pantry_plan",
-      "level5_python_factors"
-    ],
-    "difficulty_matched": false,
-    "meaning": "these levels are frozen and confirmed per domain, and they back the published base-model scale figure, but they have not cleared the held-out confirmation that Levels 1-3 cleared before publication and they are not difficulty-matched against a fixed reference",
-    "status": "frozen_pending_heldout_confirmation"
+  "admission_status": {
+    "level4": {
+      "admitted": false,
+      "difficulty_matched": false,
+      "difficulty_matched_domains": [
+        "countdown",
+        "graph_coloring",
+        "pantry",
+        "python_factors"
+      ],
+      "mathir_note": "The Level 1 MathIR target is not reachable at 7B by any construction measured: the target pairs pass@1 0.0437 with pass@8 0.2402, a heterogeneity gap of 0.060, while every 7B MathIR construction runs 0.169 to 0.398, so the two gates cannot be met together. The dataset itself is sound and verified.",
+      "meaning": "Level 4 cleared held-out confirmation in four of five domains. MathIR missed its pass@1 gate at 1.07 of tolerance, so the level is not admitted. The four confirmed domains carry the same warrant as Levels 1-3; MathIR does not, and a MathIR result at Level 4 should not be reported as difficulty-matched.",
+      "not_difficulty_matched_domains": [
+        "mathir"
+      ]
+    },
+    "level5": {
+      "admitted": true,
+      "difficulty_matched": true,
+      "domains": [
+        "countdown",
+        "graph_coloring",
+        "mathir",
+        "pantry",
+        "python_factors"
+      ],
+      "meaning": "Level 5 cleared held-out confirmation in all five domains against 128 fresh rows per domain with original-grader replay, and is admitted. It carries the same warrant as Levels 1-3."
+    }
   },
   "config_count": 10,
   "configs": {
@@ -169,7 +181,7 @@
     {
       "config_name": "level4_graph_coloring",
       "data_file": "data/level4_graph_coloring/train.parquet",
-      "difficulty_matched": false,
+      "difficulty_matched": true,
       "domain": "graph_coloring",
       "exclusions_sha256": "63c31b5763053d386d5189c3e5cbef0d65183bad4442228d5181f1c08a0996fc",
       "features": {
@@ -268,6 +280,7 @@
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       },
       "level": 4,
+      "level_admitted": false,
       "original_datasetdict_split": "train",
       "parquet_bytes": 28409,
       "parquet_sha256": "1806ce59d5550cc33b5c435242035b334d841fa3a60398143c70009b40c2ff9f",
@@ -290,7 +303,7 @@
       ],
       "source_repository_path": "var/data/modebench_scale_domain_revisions_v1/level4_graph_coloring_r2/level4/dataset/graph_coloring",
       "split": "train",
-      "status": "frozen_pending_heldout_confirmation",
+      "status": "heldout_confirmed_difficulty_matched",
       "support_histogram": {
         "12": 54,
         "18": 1,
@@ -307,7 +320,7 @@
     {
       "config_name": "level4_graph_coloring",
       "data_file": "data/level4_graph_coloring/dev.parquet",
-      "difficulty_matched": false,
+      "difficulty_matched": true,
       "domain": "graph_coloring",
       "exclusions_sha256": "63c31b5763053d386d5189c3e5cbef0d65183bad4442228d5181f1c08a0996fc",
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@@ -362,6 +375,7 @@
         "rows_sha256": "3a3d6bcff51009ffb3db004be082f9f6df83b67749076ef24128ecfc54128a35"
       },
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+      "level_admitted": false,
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       "parquet_bytes": 18631,
       "parquet_sha256": "07076d1716e072a2866193c0a8dc9d012f1c5a17888e926bf2fade03bc16b233",
@@ -384,7 +398,7 @@
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       "source_repository_path": "var/data/modebench_scale_domain_revisions_v1/level4_graph_coloring_r2/level4/dataset/graph_coloring",
       "split": "dev",
-      "status": "frozen_pending_heldout_confirmation",
+      "status": "heldout_confirmed_difficulty_matched",
       "support_histogram": {
         "12": 21,
         "4": 54,
@@ -399,7 +413,7 @@
     {
       "config_name": "level4_graph_coloring",
       "data_file": "data/level4_graph_coloring/eval.parquet",
-      "difficulty_matched": false,
+      "difficulty_matched": true,
       "domain": "graph_coloring",
       "exclusions_sha256": "63c31b5763053d386d5189c3e5cbef0d65183bad4442228d5181f1c08a0996fc",
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@@ -492,6 +506,7 @@
         "rows_sha256": "f080cdff73d60ae723ca6e13328cadf6c3cac585db4157a65c56e140fc419ae7"
       },
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       "parquet_bytes": 18437,
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@@ -514,7 +529,7 @@
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       "source_repository_path": "var/data/modebench_scale_domain_revisions_v1/level4_graph_coloring_r2/level4/dataset/graph_coloring",
       "split": "eval",
-      "status": "frozen_pending_heldout_confirmation",
+      "status": "heldout_confirmed_difficulty_matched",
       "support_histogram": {
         "12": 14,
         "4": 62,
@@ -530,7 +545,7 @@
     {
       "config_name": "level4_countdown",
       "data_file": "data/level4_countdown/train.parquet",
-      "difficulty_matched": false,
+      "difficulty_matched": true,
       "domain": "countdown",
       "exclusions_sha256": null,
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@@ -629,6 +644,7 @@
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       },
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       "parquet_sha256": "4d5e969b27a0552154ad146fe342d3f1bb96b56b406bfdf36ea83e3c3a20b667",
@@ -651,7 +667,7 @@
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       "split": "train",
-      "status": "frozen_pending_heldout_confirmation",
+      "status": "heldout_confirmed_difficulty_matched",
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         "2": 29,
         "3": 87,
@@ -668,7 +684,7 @@
     {
       "config_name": "level4_countdown",
       "data_file": "data/level4_countdown/dev.parquet",
-      "difficulty_matched": false,
+      "difficulty_matched": true,
       "domain": "countdown",
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@@ -723,6 +739,7 @@
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       },
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@@ -745,7 +762,7 @@
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       "split": "dev",
-      "status": "frozen_pending_heldout_confirmation",
+      "status": "heldout_confirmed_difficulty_matched",
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@@ -760,7 +777,7 @@
     {
       "config_name": "level4_countdown",
       "data_file": "data/level4_countdown/eval.parquet",
-      "difficulty_matched": false,
+      "difficulty_matched": true,
       "domain": "countdown",
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@@ -859,6 +876,7 @@
         "rows_sha256": "d2ba8c64a83be80983a144e5bd321cd5219320319742fa712862f48f0cb28eee"
       },
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@@ -881,7 +899,7 @@
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       "split": "eval",
-      "status": "frozen_pending_heldout_confirmation",
+      "status": "heldout_confirmed_difficulty_matched",
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         "3": 40,
@@ -898,7 +916,7 @@
     {
       "config_name": "level4_python_factors",
       "data_file": "data/level4_python_factors/train.parquet",
-      "difficulty_matched": false,
+      "difficulty_matched": true,
       "domain": "python_factors",
       "exclusions_sha256": "6c850b180dadd8d678a78129794904f962f5e13cc941c4d8de0593847e33acb8",
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@@ -1249,6 +1267,7 @@
         "rows_sha256": "fdc669b27543e372dec9dc716e8913a7f918617e2792cc239c739acd830f3fb3"
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@@ -1271,7 +1290,7 @@
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       "source_repository_path": "var/data/modebench_scale_domain_revisions_v1/level4_python_factors_r5/level4/dataset/python_factors",
       "split": "train",
-      "status": "frozen_pending_heldout_confirmation",
+      "status": "heldout_confirmed_difficulty_matched",
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@@ -1330,7 +1349,7 @@
     {
       "config_name": "level4_python_factors",
       "data_file": "data/level4_python_factors/dev.parquet",
-      "difficulty_matched": false,
+      "difficulty_matched": true,
       "domain": "python_factors",
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@@ -1385,6 +1404,7 @@
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@@ -1407,7 +1427,7 @@
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       "split": "dev",
-      "status": "frozen_pending_heldout_confirmation",
+      "status": "heldout_confirmed_difficulty_matched",
       "support_histogram": {
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@@ -1449,7 +1469,7 @@
     {
       "config_name": "level4_python_factors",
       "data_file": "data/level4_python_factors/eval.parquet",
-      "difficulty_matched": false,
+      "difficulty_matched": true,
       "domain": "python_factors",
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@@ -1716,6 +1736,7 @@
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@@ -1738,7 +1759,7 @@
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       "source_repository_path": "var/data/modebench_scale_domain_revisions_v1/level4_python_factors_r5/level4/dataset/python_factors",
       "split": "eval",
-      "status": "frozen_pending_heldout_confirmation",
+      "status": "heldout_confirmed_difficulty_matched",
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@@ -1846,6 +1867,7 @@
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@@ -1868,7 +1890,7 @@
       ],
       "source_repository_path": "var/data/modebench_scale_v1/level4/dataset/mathir",
       "split": "train",
-      "status": "frozen_pending_heldout_confirmation",
+      "status": "heldout_confirmed_not_difficulty_matched",
       "support_histogram": {
         "5": 384
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@@ -1934,6 +1956,7 @@
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@@ -1956,7 +1979,7 @@
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       "split": "dev",
-      "status": "frozen_pending_heldout_confirmation",
+      "status": "heldout_confirmed_not_difficulty_matched",
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@@ -2030,6 +2053,7 @@
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@@ -2052,7 +2076,7 @@
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       "split": "eval",
-      "status": "frozen_pending_heldout_confirmation",
+      "status": "heldout_confirmed_not_difficulty_matched",
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       },
@@ -2063,7 +2087,7 @@
     {
       "config_name": "level4_pantry_plan",
       "data_file": "data/level4_pantry_plan/train.parquet",
-      "difficulty_matched": false,
+      "difficulty_matched": true,
       "domain": "pantry_plan",
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@@ -2853,6 +2877,7 @@
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@@ -2878,7 +2903,7 @@
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       "split": "train",
-      "status": "frozen_pending_heldout_confirmation",
+      "status": "heldout_confirmed_difficulty_matched",
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@@ -2924,7 +2949,7 @@
     {
       "config_name": "level4_pantry_plan",
       "data_file": "data/level4_pantry_plan/dev.parquet",
-      "difficulty_matched": false,
+      "difficulty_matched": true,
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@@ -2991,6 +3016,7 @@
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@@ -3016,7 +3042,7 @@
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