diff --git a/packages/models/src/models/deepseek.ts b/packages/models/src/models/deepseek.ts
index 842acb1068..7453b2bad4 100644
--- a/packages/models/src/models/deepseek.ts
+++ b/packages/models/src/models/deepseek.ts
@@ -538,6 +538,31 @@ export const deepseekModels = [
 				tools: true,
 				jsonOutput: false,
 			},
+			{
+				providerId: "fireworks",
+				// The undated `deepseek-v4-flash` alias still resolves to the launch
+				// snapshot; `-0731` is the current deployment.
+				externalId: "accounts/fireworks/models/deepseek-v4-flash-0731",
+				inputPrice: "0.14e-6",
+				cachedInputPrice: "0.028e-6",
+				outputPrice: "0.28e-6",
+				requestPrice: "0",
+				// Fireworks prices DeepSeek's Priority tier at 1.5x standard rather
+				// than the 1.25x that applies to the rest of its catalogue.
+				serviceTiers: ["priority"],
+				serviceTierMultipliers: { priority: 1.5 },
+				contextSize: 1048576,
+				maxOutput: 393216,
+				streaming: true,
+				reasoning: true,
+				// Fireworks rejects "minimal" for this model; the rest of the enum
+				// (plus "none" for non-thinking mode) is accepted.
+				reasoningEfforts: ["none", "low", "medium", "high", "xhigh", "max"],
+				vision: false,
+				tools: true,
+				jsonOutput: true,
+				jsonOutputSchema: true,
+			},
 		],
 	},
 ] as const satisfies ModelDefinition[];