From dc8318f1cd9fad0721b1cdb269891e57823b8f43 Mon Sep 17 00:00:00 2001
From: Luca Steeb <contact@luca-steeb.com>
Date: Mon, 27 Apr 2026 13:51:40 +0700
Subject: [PATCH] feat(novita): add deepseek-v4-flash provider mapping

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
---
 packages/actions/src/prepare-request-body.ts | 14 +++++++++++---
 packages/models/src/models/deepseek.ts       | 15 +++++++++++++++
 2 files changed, 26 insertions(+), 3 deletions(-)

diff --git a/packages/actions/src/prepare-request-body.ts b/packages/actions/src/prepare-request-body.ts
index 2ec3765b20..b26b87727b 100644
--- a/packages/actions/src/prepare-request-body.ts
+++ b/packages/actions/src/prepare-request-body.ts
@@ -957,9 +957,17 @@ export async function prepareRequestBody(
 	// `reasoning` field back to provider-style `reasoning_content`. DeepSeek
 	// accepts an empty string, but Moonshot's newer reasoning models (kimi-k2.5,
 	// kimi-k2.6) treat an empty string as missing — use a single space as a
-	// non-empty placeholder there.
-	if (usedProvider === "deepseek" || usedProvider === "moonshot") {
-		const fallback = usedProvider === "moonshot" ? " " : "";
+	// non-empty placeholder there. Novita proxies DeepSeek V4 with the same
+	// upstream constraint, so apply the DeepSeek behavior there too.
+	const isNovitaDeepseekV4 =
+		usedProvider === "novita" && usedModel.startsWith("deepseek/deepseek-v4");
+	if (
+		usedProvider === "deepseek" ||
+		usedProvider === "moonshot" ||
+		isNovitaDeepseekV4
+	) {
+		const fallback =
+			usedProvider === "moonshot" || isNovitaDeepseekV4 ? " " : "";
 		processedMessages = processedMessages.map((m) => {
 			if (
 				m.role !== "assistant" ||
diff --git a/packages/models/src/models/deepseek.ts b/packages/models/src/models/deepseek.ts
index 3ee04074d8..c603af714a 100644
--- a/packages/models/src/models/deepseek.ts
+++ b/packages/models/src/models/deepseek.ts
@@ -328,6 +328,21 @@ export const deepseekModels = [
 					"tools",
 				],
 			},
+			{
+				providerId: "novita",
+				modelName: "deepseek/deepseek-v4-flash",
+				inputPrice: 0.14 / 1e6,
+				cachedInputPrice: 0.028 / 1e6,
+				outputPrice: 0.28 / 1e6,
+				requestPrice: 0,
+				contextSize: 1050000,
+				maxOutput: 393216,
+				streaming: true,
+				reasoning: true,
+				vision: false,
+				tools: true,
+				jsonOutput: true,
+			},
 		],
 	},
 ] as const satisfies ModelDefinition[];