diff --git a/network-poc/frontend/src/components/Settings.astro b/network-poc/frontend/src/components/Settings.astro
new file mode 100644
index 0000000..9d7008e
--- /dev/null
+++ b/network-poc/frontend/src/components/Settings.astro
@@ -0,0 +1,67 @@
+<!-- Asetukset-paneeli: kaikki LLM-parametrit muokattavissa -->
+<div id="panel-settings" class="panel">
+    <div style="max-width:800px;margin:0 auto;padding:20px">
+        <h2 style="color:#e6edf3;margin-bottom:16px">Asetukset</h2>
+        <p style="color:#8b949e;margin-bottom:20px;font-size:14px">Kaikki kielimallin toimintaan vaikuttavat parametrit. Muutokset tallentuvat automaattisesti.</p>
+
+        <!-- System prompt -->
+        <div class="settings-section">
+            <h3 class="settings-title">System Prompt</h3>
+            <p class="settings-desc">Kielimallin perusohje joka lähetetään jokaisessa pyynnössä. Määrittää mallin käyttäytymisen.</p>
+            <textarea id="set-system-prompt" class="settings-textarea" rows="4"></textarea>
+        </div>
+
+        <!-- Sampling -->
+        <div class="settings-section">
+            <h3 class="settings-title">Sampling-parametrit</h3>
+            <p class="settings-desc">Kontrolloi miten malli valitsee seuraavan tokenin. <a href="#guide" onclick="switchTab('guide')" style="color:var(--accent)">Lue lisää oppaasta.</a></p>
+            <div class="settings-grid">
+                <div>
+                    <label class="settings-label">Temperature <span id="set-temp-val" class="settings-val">0.7</span></label>
+                    <input type="range" id="set-temperature" min="0" max="1.5" step="0.1" value="0.7" class="settings-slider">
+                    <div class="settings-hint">0 = deterministic, 0.7 = balanced, 1.5 = creative</div>
+                </div>
+                <div>
+                    <label class="settings-label">Top-K <span id="set-topk-val" class="settings-val">40</span></label>
+                    <input type="range" id="set-topk" min="1" max="100" step="1" value="40" class="settings-slider">
+                    <div class="settings-hint">Montako tokenia huomioidaan. 1 = greedy, 40 = oletus</div>
+                </div>
+                <div>
+                    <label class="settings-label">Repetition Penalty <span id="set-rep-val" class="settings-val">1.15</span></label>
+                    <input type="range" id="set-repeat" min="1.0" max="2.0" step="0.05" value="1.15" class="settings-slider">
+                    <div class="settings-hint">Estää toistoa. 1.0 = ei rangaistusta, 1.15 = oletus</div>
+                </div>
+                <div>
+                    <label class="settings-label">Max Tokens <span id="set-maxtok-val" class="settings-val">1024</span></label>
+                    <input type="range" id="set-maxtokens" min="64" max="4096" step="64" value="1024" class="settings-slider">
+                    <div class="settings-hint">Vastauksen maksimipituus tokeneina</div>
+                </div>
+            </div>
+        </div>
+
+        <!-- Stop-sekvenssit -->
+        <div class="settings-section">
+            <h3 class="settings-title">Stop-sekvenssit</h3>
+            <p class="settings-desc">Generointi katkeaa kun malli tuottaa jonkin näistä. Yksi per rivi.</p>
+            <textarea id="set-stop-sequences" class="settings-textarea" rows="4"></textarea>
+        </div>
+
+        <!-- Malli -->
+        <div class="settings-section">
+            <h3 class="settings-title">Malli (Ollama)</h3>
+            <p class="settings-desc">Natiivisolmun käyttämä kielimalli. Muutos vaatii native-noden uudelleenkäynnistyksen.</p>
+            <select id="set-model" class="settings-select">
+                <option value="qwen2.5-coder:1.5b">Qwen2.5-Coder:1.5B (~80 tok/s, ~1GB)</option>
+                <option value="qwen2.5-coder:3b">Qwen2.5-Coder:3B (~50 tok/s, ~2GB)</option>
+                <option value="qwen2.5-coder:7b-instruct-q4_K_M">Qwen2.5-Coder:7B Q4 (~30 tok/s, ~4GB)</option>
+                <option value="qwen2.5-coder:7b">Qwen2.5-Coder:7B (~20 tok/s, ~7GB)</option>
+            </select>
+        </div>
+
+        <!-- Reset -->
+        <div style="margin-top:24px;padding-top:16px;border-top:1px solid var(--border)">
+            <button class="btn btn-red" onclick="resetSettings()" style="padding:6px 16px">Palauta oletukset</button>
+            <span style="color:#8b949e;font-size:12px;margin-left:8px">Palauttaa kaikki parametrit oletusarvoihin</span>
+        </div>
+    </div>
+</div>
diff --git a/network-poc/frontend/src/pages/index.astro b/network-poc/frontend/src/pages/index.astro
index 2f7f391..6b432ba 100644
--- a/network-poc/frontend/src/pages/index.astro
+++ b/network-poc/frontend/src/pages/index.astro
@@ -5,6 +5,7 @@ import Terminal from "../components/Terminal.astro";
 import Editor from "../components/Editor.astro";
 import Guide from "../components/Guide.astro";
 import AgentBar from "../components/AgentBar.astro";
+import Settings from "../components/Settings.astro";
 ---
 <!DOCTYPE html>
 <html lang="fi">
@@ -30,6 +31,7 @@ import AgentBar from "../components/AgentBar.astro";
             <div class="tab active" onclick="switchTab('agents')">Agentit</div>
             <div class="tab" onclick="switchTab('editor')">Editor</div>
             <div class="tab" onclick="switchTab('guide')">Opas</div>
+            <div class="tab" onclick="switchTab('settings')">Asetukset</div>
         </div>
 
         <!-- Agents-paneeli -->
@@ -41,6 +43,7 @@ import AgentBar from "../components/AgentBar.astro";
 
         <Editor />
         <Guide />
+        <Settings />
     </div>
 
     <script is:inline>
@@ -95,6 +98,19 @@ Provide a brief risk assessment with severity (low/medium/high/critical).` },
     function saveAgents() { localStorage.setItem('kpn-agents', JSON.stringify(agents)); }
     function getAgentModel(name) { const a = agents[name]; return a ? a.model : name; }
 
+    // LLM-asetukset (localStorage-persistenssi)
+    const defaultSettings = {
+        systemPrompt: "You are a coding assistant. Respond with ONLY code. No explanations, no markdown fences, no 'Please note' text. Only working code with proper imports.",
+        temperature: 0.7,
+        topK: 40,
+        repeatPenalty: 1.15,
+        maxTokens: 1024,
+        stopSequences: "\\n###\\n\\nExplanation\\nNote:\\nPlease note\\nThis is a basic\\n```\\n\\n\\n// Example\\n# Example",
+        model: "qwen2.5-coder:3b",
+    };
+    let settings = JSON.parse(localStorage.getItem('kpn-settings') || 'null') || { ...defaultSettings };
+    function saveSettings() { localStorage.setItem('kpn-settings', JSON.stringify(settings)); }
+
     // === Tab switching ===
     window.switchTab = function(tab) {
         document.querySelectorAll('.panel').forEach(p => p.classList.remove('active'));
@@ -800,6 +816,58 @@ Provide a brief risk assessment with severity (low/medium/high/critical).` },
         }
         return html;
     }
+    // === Settings panel ===
+    function initSettings() {
+        const els = {
+            systemPrompt: document.getElementById('set-system-prompt'),
+            temperature: document.getElementById('set-temperature'),
+            tempVal: document.getElementById('set-temp-val'),
+            topK: document.getElementById('set-topk'),
+            topkVal: document.getElementById('set-topk-val'),
+            repeat: document.getElementById('set-repeat'),
+            repVal: document.getElementById('set-rep-val'),
+            maxTokens: document.getElementById('set-maxtokens'),
+            maxtokVal: document.getElementById('set-maxtok-val'),
+            stopSeq: document.getElementById('set-stop-sequences'),
+            model: document.getElementById('set-model'),
+        };
+        if (!els.systemPrompt) return;
+
+        // Lataa arvot
+        els.systemPrompt.value = settings.systemPrompt;
+        els.temperature.value = settings.temperature;
+        els.tempVal.textContent = settings.temperature;
+        els.topK.value = settings.topK;
+        els.topkVal.textContent = settings.topK;
+        els.repeat.value = settings.repeatPenalty;
+        els.repVal.textContent = settings.repeatPenalty;
+        els.maxTokens.value = settings.maxTokens;
+        els.maxtokVal.textContent = settings.maxTokens;
+        els.stopSeq.value = settings.stopSequences.replace(/\\n/g, '\n');
+        els.model.value = settings.model;
+
+        // Tallenna muutokset
+        els.systemPrompt.oninput = () => { settings.systemPrompt = els.systemPrompt.value; saveSettings(); };
+        els.temperature.oninput = () => { settings.temperature = +els.temperature.value; els.tempVal.textContent = settings.temperature; saveSettings(); };
+        els.topK.oninput = () => { settings.topK = +els.topK.value; els.topkVal.textContent = settings.topK; saveSettings(); };
+        els.repeat.oninput = () => { settings.repeatPenalty = +els.repeat.value; els.repVal.textContent = settings.repeatPenalty; saveSettings(); };
+        els.maxTokens.oninput = () => { settings.maxTokens = +els.maxTokens.value; els.maxtokVal.textContent = settings.maxTokens; saveSettings(); };
+        els.stopSeq.oninput = () => { settings.stopSequences = els.stopSeq.value.replace(/\n/g, '\\n'); saveSettings(); };
+        els.model.onchange = () => { settings.model = els.model.value; saveSettings(); };
+    }
+    // Alustetaan kun settings-tab avataan
+    const origSwitchTab = window.switchTab;
+    window.switchTab = function(tab) {
+        origSwitchTab(tab);
+        if (tab === 'settings') initSettings();
+    };
+
+    window.resetSettings = function() {
+        if (!confirm('Palautetaanko kaikki asetukset oletuksiin?')) return;
+        settings = { ...defaultSettings };
+        saveSettings();
+        initSettings();
+    };
     </script>
 </body>
 </html>
diff --git a/network-poc/frontend/src/styles/global.css b/network-poc/frontend/src/styles/global.css
index 2f67795..5abad7e 100644
--- a/network-poc/frontend/src/styles/global.css
+++ b/network-poc/frontend/src/styles/global.css
@@ -165,6 +165,34 @@ body {
     box-shadow: 0 0 25px rgba(88,166,255,0.8);
 }
 
+/* Settings */
+.settings-section {
+    margin-bottom: 24px; padding: 16px; background: var(--panel);
+    border: 1px solid var(--border); border-radius: 6px;
+}
+.settings-title { color: #e6edf3; font-size: 15px; margin-bottom: 4px; }
+.settings-desc { color: #8b949e; font-size: 13px; margin-bottom: 12px; }
+.settings-label { color: var(--text); font-size: 13px; display: block; margin-bottom: 4px; }
+.settings-val { color: var(--accent); font-weight: 600; float: right; }
+.settings-hint { color: #8b949e; font-size: 11px; margin-top: 2px; }
+.settings-textarea {
+    width: 100%; background: var(--bg); color: var(--text);
+    border: 1px solid var(--border); border-radius: 4px;
+    padding: 8px; font-size: 13px; font-family: 'Courier New', monospace;
+    resize: vertical;
+}
+.settings-select {
+    width: 100%; background: var(--bg); color: var(--text);
+    border: 1px solid var(--border); border-radius: 4px;
+    padding: 8px; font-size: 13px;
+}
+.settings-slider {
+    width: 100%; accent-color: var(--accent);
+}
+.settings-grid {
+    display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
+}
+
 /* Animations */
 @keyframes blink { 0%,100% { opacity:1 } 50% { opacity:0 } }
 @keyframes spin { to { transform: rotate(360deg) } }