Open Source · mobile

Use DeepSeek V3.1 with Kotlin (Android)

Updated 2026-05-21 · By XALEN

How to use DeepSeek V3.1 (Open Source, 685B (37B active)) with Kotlin (Android). Install, authenticate, and make your first API call in minutes. Working code example included.

Model

DeepSeek V3.1

685B (37B active) · 128K context · $0.06 input

Framework

Kotlin (Android)

mobile · implementation("com.squareup.okhttp3:okhttp:4.12.0")

1. Install

implementation("com.squareup.okhttp3:okhttp:4.12.0")

2. Code

import okhttp3.*
import org.json.JSONObject

suspend fun chat(question: String): String {
    val client = OkHttpClient()
    val body = JSONObject()
        .put("model", "deepseek-v3-1")
        .put("messages", org.json.JSONArray()
            .put(JSONObject().put("role", "user").put("content", question)))
    val request = Request.Builder()
        .url("https://api.xalen.io/v1/chat/completions")
        .addHeader("Authorization", "Bearer xln_test_YOUR_KEY")
        .post(body.toString().toRequestBody("application/json".toMediaType()))
        .build()
    val response = client.newCall(request).execute()
    val json = JSONObject(response.body!!.string())
    return json.getJSONArray("choices").getJSONObject(0)
        .getJSONObject("message").getString("content")
}

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Last updated: 2026-05-21