diff --git a/packages/types/src/providers/openai-codex.ts b/packages/types/src/providers/openai-codex.ts
index 72b909591a6..1b4c642d01b 100644
--- a/packages/types/src/providers/openai-codex.ts
+++ b/packages/types/src/providers/openai-codex.ts
@@ -68,6 +68,20 @@ export const openAiCodexModels = {
 		supportsTemperature: false,
 		description: "GPT-5.3 Codex: OpenAI's flagship coding model via ChatGPT subscription",
 	},
+	"gpt-5.3-codex-spark": {
+		maxTokens: 128000,
+		contextWindow: 400000,
+		includedTools: ["apply_patch"],
+		excludedTools: ["apply_diff", "write_to_file"],
+		supportsImages: true,
+		supportsPromptCache: true,
+		supportsReasoningEffort: ["low", "medium", "high", "xhigh"],
+		reasoningEffort: "medium",
+		inputPrice: 0,
+		outputPrice: 0,
+		supportsTemperature: false,
+		description: "GPT-5.3 Codex Spark: Fast, lightweight coding model via ChatGPT subscription",
+	},
 	"gpt-5.2-codex": {
 		maxTokens: 128000,
 		contextWindow: 400000,
diff --git a/src/api/providers/__tests__/openai-codex.spec.ts b/src/api/providers/__tests__/openai-codex.spec.ts
index 26a0e83c45c..f11caf78bf5 100644
--- a/src/api/providers/__tests__/openai-codex.spec.ts
+++ b/src/api/providers/__tests__/openai-codex.spec.ts
@@ -3,7 +3,7 @@
 import { OpenAiCodexHandler } from "../openai-codex"
 
 describe("OpenAiCodexHandler.getModel", () => {
-	it.each(["gpt-5.1", "gpt-5", "gpt-5.1-codex", "gpt-5-codex", "gpt-5-codex-mini"])(
+	it.each(["gpt-5.1", "gpt-5", "gpt-5.1-codex", "gpt-5-codex", "gpt-5-codex-mini", "gpt-5.3-codex-spark"])(
 		"should return specified model when a valid model id is provided: %s",
 		(apiModelId) => {
 			const handler = new OpenAiCodexHandler({ apiModelId })