diff --git a/.changeset/wild-dragons-leave.md b/.changeset/wild-dragons-leave.md
new file mode 100644
index 0000000000..05320a4aa2
--- /dev/null
+++ b/.changeset/wild-dragons-leave.md
@@ -0,0 +1,5 @@
+---
+"roo-cline": patch
+---
+
+Add o3-mini support to openai compatible
diff --git a/src/api/providers/openai.ts b/src/api/providers/openai.ts
index 9262f3b75a..caa99def09 100644
--- a/src/api/providers/openai.ts
+++ b/src/api/providers/openai.ts
@@ -66,6 +66,11 @@ export class OpenAiHandler extends BaseProvider implements SingleCompletionHandl
 		const deepseekReasoner = modelId.includes("deepseek-reasoner")
 		const ark = modelUrl.includes(".volces.com")
 
+		if (modelId.startsWith("o3-mini")) {
+			yield* this.handleO3FamilyMessage(modelId, systemPrompt, messages)
+			return
+		}
+
 		if (this.options.openAiStreamingEnabled ?? true) {
 			const systemMessage: OpenAI.Chat.ChatCompletionSystemMessageParam = {
 				role: "system",
@@ -169,6 +174,69 @@ export class OpenAiHandler extends BaseProvider implements SingleCompletionHandl
 			throw error
 		}
 	}
+
+	private async *handleO3FamilyMessage(
+		modelId: string,
+		systemPrompt: string,
+		messages: Anthropic.Messages.MessageParam[],
+	): ApiStream {
+		if (this.options.openAiStreamingEnabled ?? true) {
+			const stream = await this.client.chat.completions.create({
+				model: "o3-mini",
+				messages: [
+					{
+						role: "developer",
+						content: `Formatting re-enabled\n${systemPrompt}`,
+					},
+					...convertToOpenAiMessages(messages),
+				],
+				stream: true,
+				stream_options: { include_usage: true },
+				reasoning_effort: this.getModel().info.reasoningEffort,
+			})
+
+			yield* this.handleStreamResponse(stream)
+		} else {
+			const requestOptions: OpenAI.Chat.Completions.ChatCompletionCreateParamsNonStreaming = {
+				model: modelId,
+				messages: [
+					{
+						role: "developer",
+						content: `Formatting re-enabled\n${systemPrompt}`,
+					},
+					...convertToOpenAiMessages(messages),
+				],
+			}
+
+			const response = await this.client.chat.completions.create(requestOptions)
+
+			yield {
+				type: "text",
+				text: response.choices[0]?.message.content || "",
+			}
+			yield this.processUsageMetrics(response.usage)
+		}
+	}
+
+	private async *handleStreamResponse(stream: AsyncIterable<OpenAI.Chat.Completions.ChatCompletionChunk>): ApiStream {
+		for await (const chunk of stream) {
+			const delta = chunk.choices[0]?.delta
+			if (delta?.content) {
+				yield {
+					type: "text",
+					text: delta.content,
+				}
+			}
+
+			if (chunk.usage) {
+				yield {
+					type: "usage",
+					inputTokens: chunk.usage.prompt_tokens || 0,
+					outputTokens: chunk.usage.completion_tokens || 0,
+				}
+			}
+		}
+	}
 }
 
 export async function getOpenAiModels(baseUrl?: string, apiKey?: string) {