diff --git a/crates/autopilot/src/run_loop.rs b/crates/autopilot/src/run_loop.rs
index 3b65f3bc65..a2cbbf9a03 100644
--- a/crates/autopilot/src/run_loop.rs
+++ b/crates/autopilot/src/run_loop.rs
@@ -476,6 +476,7 @@ impl RunLoop {
                         .iter()
                         .map(|(token, price)| (token.0, price.get().into()))
                         .collect(),
+                    is_winner: participant.is_winner(),
                 })
                 .collect(),
         };
diff --git a/crates/e2e/tests/e2e/solver_competition.rs b/crates/e2e/tests/e2e/solver_competition.rs
index 785a4488e6..cb19265d1b 100644
--- a/crates/e2e/tests/e2e/solver_competition.rs
+++ b/crates/e2e/tests/e2e/solver_competition.rs
@@ -125,8 +125,10 @@ async fn solver_competition(web3: Web3) {
 
     // Non winning candidate
     assert!(competition.common.solutions[0].ranking == 2);
+    assert!(!competition.common.solutions[0].is_winner);
     // Winning candidate
     assert!(competition.common.solutions[1].ranking == 1);
+    assert!(competition.common.solutions[1].is_winner);
 }
 
 async fn fairness_check(web3: Web3) {
diff --git a/crates/model/src/solver_competition.rs b/crates/model/src/solver_competition.rs
index 58a00a732e..8de8d07596 100644
--- a/crates/model/src/solver_competition.rs
+++ b/crates/model/src/solver_competition.rs
@@ -54,6 +54,7 @@ pub struct SolverSettlement {
     #[serde_as(as = "BTreeMap<_, HexOrDecimalU256>")]
     pub clearing_prices: BTreeMap<H160, U256>,
     pub orders: Vec<Order>,
+    pub is_winner: bool,
 }
 
 #[serde_as]
@@ -167,6 +168,7 @@ mod tests {
                             "executedAmount": "14",
                         }
                     ],
+                    "isWinner": true,
                 },
             ],
         });
@@ -208,6 +210,7 @@ mod tests {
                             executed_amount: 14.into(),
                         },
                     ],
+                    is_winner: true,
                 }],
             },
         };
@@ -273,7 +276,8 @@ mod tests {
               "clearingPrices": {
                 "0x9d409a0a012cfba9b15f6d4b36ac57a46966ab9a": "32666943622",
                 "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48": "19827747502258423744093"
-              }
+              },
+              "isWinner": true,
             },
             {
               "orders": [
@@ -294,7 +298,8 @@ mod tests {
               "clearingPrices": {
                 "0x9d409a0a012cfba9b15f6d4b36ac57a46966ab9a": "32652483021",
                 "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48": "19827747502258423744093"
-              }
+              },
+              "isWinner": false,
             },
             {
               "orders": [
@@ -315,7 +320,8 @@ mod tests {
               "clearingPrices": {
                 "0x9d409a0a012cfba9b15f6d4b36ac57a46966ab9a": "100000",
                 "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48": "60721701581190944"
-              }
+              },
+              "isWinner": false,
             },
             {
               "orders": [
@@ -336,7 +342,8 @@ mod tests {
               "clearingPrices": {
                 "0x9d409a0a012cfba9b15f6d4b36ac57a46966ab9a": "32725026283",
                 "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48": "19827747502258423744093"
-              }
+              },
+              "isWinner": false,
             },
             {
               "orders": [
@@ -357,7 +364,8 @@ mod tests {
               "clearingPrices": {
                 "0x9d409a0a012cfba9b15f6d4b36ac57a46966ab9a": "32752835446",
                 "0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48": "19827747502258423744093"
-              }
+              },
+              "isWinner": false,
             }
           ],
           "transactionHashes": ["0x044499c2a830890cb0a8ecf9aec6c5621e8310092a58d369cdef726254d3d108"],
diff --git a/crates/orderbook/openapi.yml b/crates/orderbook/openapi.yml
index 00639e36b0..98dff6be3d 100644
--- a/crates/orderbook/openapi.yml
+++ b/crates/orderbook/openapi.yml
@@ -1504,6 +1504,9 @@ components:
           description: Maps from solver name to object describing that solver's settlement.
           items:
             $ref: "#/components/schemas/SolverSettlement"
+        isWinner:
+          type: boolean
+          description: whether the solution is a winner or not
     SolverSettlement:
       type: object
       properties: