diff --git a/docs/STATUS.md b/docs/STATUS.md
index e855f05f..3df64898 100644
--- a/docs/STATUS.md
+++ b/docs/STATUS.md
@@ -66,6 +66,9 @@ What a reader should not have to dig for:
    episodes ingested by crashed attempts, a code patch between conditions, no trusted execution
    receipt, and execution from an uncommitted tree. All six, and the directory selection rule,
    are in `results/official-007-graphiti/provenance/README.md` beside the executed source.
+   🔁 **Added the same day, and larger than all six: Graphiti searched a different corpus.** It
+   was offered 120 to 143 sessions per condition, without the ~4,900 document haystack every other
+   arm searched, so its row is not comparable to theirs and must not be read as a ranking.
 3. **Claude Mem ran with a synchronous first-search guard**, which preregistration 074 requires
    to be labelled on any result. Its row says so in its integration field.
 4. **Claude Mem was never sent a review invitation.** Nothing in this repository or the project
diff --git a/results/official-007-graphiti/provenance/README.md b/results/official-007-graphiti/provenance/README.md
index 27309785..b47eb33f 100644
--- a/results/official-007-graphiti/provenance/README.md
+++ b/results/official-007-graphiti/provenance/README.md
@@ -67,6 +67,26 @@ day.
    2026-08-29 history rewrite and would republish content removed since. What executed is
    preserved here instead (next section).
 
+## The corpus was not the haystack (added 2026-09-26, the same day)
+
+**This was missing from the first version of this page, and it matters more than any deviation
+above.** Graphiti was offered only the condition's own sessions, without the shared ~4,900 document
+haystack every other arm searched:
+
+| condition | sessions offered to Graphiti | offered to mempalace and cognee |
+|---|---:|---:|
+| present | 132 | 4,900 |
+| absent | 120 | 4,888 |
+| superseded | 143 | 4,911 |
+| contradictory | 142 | 4,911 |
+| adjacent | 132 | 4,900 |
+
+Read from `ingest[*].sessions_offered` in each `environment.json`. Preregistration 084 does not state
+a corpus size, so this is not a deviation from its text, but it is a different retrieval problem:
+with no distractors, finding the governing session is far easier. The joined comparison against
+official-003 is therefore not like for like, and the Graphiti row must not be read as a ranking
+against arms that searched the full haystack.
+
 ## Source
 
 `source/` holds the working-tree copies of the files that define the arm and its execution:
diff --git a/scripts/build_leaderboard.py b/scripts/build_leaderboard.py
index 8f61fdf2..05c7b4ff 100644
--- a/scripts/build_leaderboard.py
+++ b/scripts/build_leaderboard.py
@@ -94,7 +94,14 @@
     ),
     # Same reasoning: the run deviated from preregistration 084 in six stated ways, and a reader of
     # the row alone should not have to open results/official-007-graphiti/provenance/ to learn it.
-    "graphiti": ("Graphiti MCP server, run deviated from its preregistration", None, "Graphiti"),
+    "graphiti": (
+        (
+            "Graphiti MCP server, searched about 140 sessions instead of the 4,900 document "
+            "haystack, and deviated from its preregistration; not comparable"
+        ),
+        None,
+        "Graphiti",
+    ),
 }
 
 # ⛔ PRODUCT_ARMS is the list of arms that are MEASURED, not the arms that are hoped for. `mem0`,
diff --git a/site/data/leaderboard.js b/site/data/leaderboard.js
index 4e833968..3ff43097 100644
--- a/site/data/leaderboard.js
+++ b/site/data/leaderboard.js
@@ -308,7 +308,7 @@ window.AMB_LEADERBOARD = {
     },
     {
       "name": "Graphiti",
-      "type": "Graphiti MCP server, run deviated from its preregistration",
+      "type": "Graphiti MCP server, searched about 140 sessions instead of the 4,900 document haystack, and deviated from its preregistration; not comparable",
       "success": 0.6059,
       "delta": 0.0228,
       "ci": [
diff --git a/site/index.html b/site/index.html
index 0ecb4a15..ec7bf6d3 100644
--- a/site/index.html
+++ b/site/index.html
@@ -143,7 +143,7 @@ <h2>The arms</h2>
       <div class="arm-cell"><div class="arm-name">supermemory</div><div class="arm-type">official Claude Code lifecycle hooks, own run</div><span class="badge">product</span></div>
       <div class="arm-cell"><div class="arm-name">cognee</div><div class="arm-type">MCP server, own run</div><span class="badge">product</span></div>
       <div class="arm-cell"><div class="arm-name">Claude Mem</div><div class="arm-type">lifecycle hooks and MCP search, first-search guard, own run</div><span class="badge">product</span></div>
-      <div class="arm-cell"><div class="arm-name">Graphiti</div><div class="arm-type">MCP server, own run, deviated from its preregistration</div><span class="badge">product</span></div>
+      <div class="arm-cell"><div class="arm-name">Graphiti</div><div class="arm-type">MCP server, own run on a smaller corpus, not comparable</div><span class="badge">product</span></div>
     </div>
 
     <p class="prose mt-m"><code>bare</code> is the floor. <code>placebo</code> separates memory from
diff --git a/site/method.html b/site/method.html
index 995bfcde..f2067168 100644
--- a/site/method.html
+++ b/site/method.html
@@ -165,8 +165,9 @@ <h2>The arms</h2>
             run on the same model and task grid</td>
             <td>"the product was never tried." Each run is joined to official-003 on task, seed
             and condition, so it is compared on the cells both admitted. Claude Mem ran with a
-            first-search guard and is labelled as such; Graphiti's run deviated from its
-            preregistration in six stated ways, listed with its artifacts</td>
+            first-search guard and is labelled as such; Graphiti searched about 140 sessions
+            instead of the 4,900 document haystack and deviated from its preregistration in six
+            stated ways, so its row is not comparable to the others</td>
           </tr>
           <tr>
             <td><span class="m">recall_prefetch</span></td>