fix: remove stream_options parameter from SambaNova API calls to resolve 400 error

- Override createStream method in SambaNovaHandler to exclude stream_options
- SambaNova API does not support stream_options parameter
- Update test to verify stream_options is not included in requests
- Fixes #9975

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

@@ -113,7 +113,7 @@ describe("SambaNovaHandler", () => {
 		expect(firstChunk.value).toMatchObject({ type: "usage", inputTokens: 10, outputTokens: 20 })
 	})
 
-	it("createMessage should pass correct parameters to SambaNova client", async () => {
+	it("createMessage should pass correct parameters to SambaNova client without stream_options", async () => {
 		const modelId: SambaNovaModelId = "Meta-Llama-3.3-70B-Instruct"
 		const modelInfo = sambaNovaModels[modelId]
 		const handlerWithModel = new SambaNovaHandler({
@@ -137,6 +137,7 @@ describe("SambaNovaHandler", () => {
 		const messageGenerator = handlerWithModel.createMessage(systemPrompt, messages)
 		await messageGenerator.next()
 
+		// Verify that stream_options is NOT included in the request
 		expect(mockCreate).toHaveBeenCalledWith(
 			expect.objectContaining({
 				model: modelId,
@@ -144,9 +145,12 @@ describe("SambaNovaHandler", () => {
 				temperature: 0.7,
 				messages: expect.arrayContaining([{ role: "system", content: systemPrompt }]),
 				stream: true,
-				stream_options: { include_usage: true },
 			}),
 			undefined,
 		)
+
+		// Explicitly verify stream_options is not present
+		const callArgs = mockCreate.mock.calls[0][0]
+		expect(callArgs).not.toHaveProperty("stream_options")
 	})
 })

src/api/providers/sambanova.ts

@@ -1,6 +1,12 @@
+import { Anthropic } from "@anthropic-ai/sdk"
+import OpenAI from "openai"
+
 import { type SambaNovaModelId, sambaNovaDefaultModelId, sambaNovaModels } from "@roo-code/types"
 
 import type { ApiHandlerOptions } from "../../shared/api"
+import { getModelMaxOutputTokens } from "../../shared/api"
+import { convertToOpenAiMessages } from "../transform/openai-format"
+import type { ApiHandlerCreateMessageMetadata } from "../index"
 
 import { BaseOpenAiCompatibleProvider } from "./base-openai-compatible-provider"
 
@@ -16,4 +22,48 @@ export class SambaNovaHandler extends BaseOpenAiCompatibleProvider<SambaNovaMode
 			defaultTemperature: 0.7,
 		})
 	}
+
+	/**
+	 * Override createStream to exclude stream_options parameter.
+	 * SambaNova API does not support the stream_options parameter and returns a 400 error when it's included.
+	 */
+	protected override createStream(
+		systemPrompt: string,
+		messages: Anthropic.Messages.MessageParam[],
+		metadata?: ApiHandlerCreateMessageMetadata,
+		requestOptions?: OpenAI.RequestOptions,
+	) {
+		const { id: model, info } = this.getModel()
+
+		const max_tokens =
+			getModelMaxOutputTokens({
+				modelId: model,
+				model: info,
+				settings: this.options,
+				format: "openai",
+			}) ?? undefined
+
+		const temperature = this.options.modelTemperature ?? this.defaultTemperature
+
+		const params: OpenAI.Chat.Completions.ChatCompletionCreateParamsStreaming = {
+			model,
+			max_tokens,
+			temperature,
+			messages: [{ role: "system", content: systemPrompt }, ...convertToOpenAiMessages(messages)],
+			stream: true,
+			// Note: stream_options is intentionally excluded for SambaNova compatibility
+			...(metadata?.tools && { tools: this.convertToolsForOpenAI(metadata.tools) }),
+			...(metadata?.tool_choice && { tool_choice: metadata.tool_choice }),
+			...(metadata?.toolProtocol === "native" && {
+				parallel_tool_calls: metadata.parallelToolCalls ?? false,
+			}),
+		}
+
+		// Add thinking parameter if reasoning is enabled and model supports it
+		if (this.options.enableReasoningEffort && info.supportsReasoningBinary) {
+			;(params as any).thinking = { type: "enabled" }
+		}
+
+		return this.client.chat.completions.create(params, requestOptions)
+	}
 }