diff --git a/src/account.el b/src/account.el
index 50f0240..e1268d1 100644
--- a/src/account.el
+++ b/src/account.el
@@ -513,7 +513,9 @@ fn account_css() -> String {
     .api-key-help-body a { color: var(--navy-65); text-decoration: underline; text-underline-offset: 2px; }
     .api-key-help-body a:hover { color: var(--navy); }
     .api-key-note { font-size: .75rem; font-weight: 300; color: var(--t3); margin-top: .625rem; line-height: 1.55; padding: .5rem .75rem; background: var(--bg2); border-left: 2px solid var(--navy-b); }
-    .api-key-note a { color: var(--navy-65); text-decoration: underline; text-underline-offset: 2px; }"
+    .api-key-note a { color: var(--navy-65); text-decoration: underline; text-underline-offset: 2px; }
+    .api-key-model-note { font-size: .8125rem; font-weight: 300; color: var(--t2); line-height: 1.65; padding: .75rem 1rem; background: var(--navy-d); border-left: 2px solid var(--navy); margin-bottom: 1.5rem; }
+    .api-key-model-note strong { font-weight: 600; color: var(--t1); }"
     "<style>" + css + "</style>"
 }
 
@@ -914,6 +916,10 @@ fn account_api_keys_section() -> String {
                     "Add your own AI provider keys. Neuron uses them directly &#8212; your keys, your models, your data."
                 )
             ) +
+            el_div(
+                "class=\"api-key-model-note\"",
+                "<strong>For best performance, use a reasoning model.</strong> o4-mini or o3 (OpenAI) &#183; Claude Sonnet 4 (Anthropic) &#183; Gemini 2.5 Pro (Google) &#183; Grok-3 (xAI). You choose the model in the app &#8212; any model works, reasoning models are where Neuron shines. <a href=\"#\" style=\"color:var(--navy-65);text-decoration:underline;text-underline-offset:2px\">Neuron Inference</a> &#8212; our own model layer, priced below the major APIs &#8212; launches Q3 2026 and becomes the default."
+            ) +
             providers +
             el_p("id=\"api-keys-msg\" style=\"display:none;font-size:.8rem;margin-top:.75rem\"", "")
         )