feat: add openai/gpt-oss-120b model to Chutes provider

- Added openai/gpt-oss-120b to ChutesModelId type definition
- Added model configuration with 128k context window and 32k max tokens
- Added test coverage for the new model
- Fixes #6973

Author: roomote

packages/types/src/providers/chutes.ts

@@ -29,6 +29,7 @@ export type ChutesModelId =
 	| "zai-org/GLM-4.5-Air"
 	| "zai-org/GLM-4.5-FP8"
 	| "moonshotai/Kimi-K2-Instruct-75k"
+	| "openai/gpt-oss-120b"
 
 export const chutesDefaultModelId: ChutesModelId = "deepseek-ai/DeepSeek-R1-0528"
 
@@ -278,4 +279,13 @@ export const chutesModels = {
 		outputPrice: 0.5926,
 		description: "Moonshot AI Kimi K2 Instruct model with 75k context window.",
 	},
+	"openai/gpt-oss-120b": {
+		maxTokens: 32768,
+		contextWindow: 131072,
+		supportsImages: false,
+		supportsPromptCache: false,
+		inputPrice: 0,
+		outputPrice: 0,
+		description: "OpenAI GPT OSS 120B model - latest open source coding model.",
+	},
 } as const satisfies Record<string, ModelInfo>

src/api/providers/__tests__/chutes.spec.ts

@@ -275,6 +275,28 @@ describe("ChutesHandler", () => {
 		)
 	})
 
+	it("should return openai/gpt-oss-120b model with correct configuration", () => {
+		const testModelId: ChutesModelId = "openai/gpt-oss-120b"
+		const handlerWithModel = new ChutesHandler({
+			apiModelId: testModelId,
+			chutesApiKey: "test-chutes-api-key",
+		})
+		const model = handlerWithModel.getModel()
+		expect(model.id).toBe(testModelId)
+		expect(model.info).toEqual(
+			expect.objectContaining({
+				maxTokens: 32768,
+				contextWindow: 131072,
+				supportsImages: false,
+				supportsPromptCache: false,
+				inputPrice: 0,
+				outputPrice: 0,
+				description: "OpenAI GPT OSS 120B model - latest open source coding model.",
+				temperature: 0.5, // Default temperature for non-DeepSeek models
+			}),
+		)
+	})
+
 	it("completePrompt method should return text from Chutes API", async () => {
 		const expectedResponse = "This is a test response from Chutes"
 		mockCreate.mockResolvedValueOnce({ choices: [{ message: { content: expectedResponse } }] })