diff --git a/website/docs/guides/run-hermes-with-nous-portal.md b/website/docs/guides/run-hermes-with-nous-portal.md
index d25a628bbf39f..1f64f03d6a169 100644
--- a/website/docs/guides/run-hermes-with-nous-portal.md
+++ b/website/docs/guides/run-hermes-with-nous-portal.md
@@ -228,7 +228,7 @@ The quarantine clears automatically on successful re-login.
 
 ### Model I want isn't in the `/model` picker
 
-The Portal catalog mirrors OpenRouter's model list (300+). If a model is missing, try typing the OpenRouter-style slug directly:
+The Portal catalog draws on OpenRouter's model list (300+) plus models served through proprietary or secondary providers. If a model is missing, try typing the OpenRouter-style slug directly:
 
 ```bash
 /model anthropic/claude-opus-4.6
diff --git a/website/docs/integrations/nous-portal.md b/website/docs/integrations/nous-portal.md
index c47adb10734b3..fcf20f8574ff0 100644
--- a/website/docs/integrations/nous-portal.md
+++ b/website/docs/integrations/nous-portal.md
@@ -42,7 +42,11 @@ The Portal proxies a curated catalog of agentic models from across the ecosystem
 | **Hermes** | Hermes-4-70B, Hermes-4-405B (chat, see [note below](#a-note-on-hermes-4)) |
 | **+ everything else** | 280+ additional models — the full agentic frontier |
 
-Routing happens through OpenRouter under the hood, so model availability and failover behavior matches what you'd get with an OpenRouter key — just billed against your Nous subscription instead. Switch between Claude Sonnet 4.6 for code and Gemini 3 Pro for long context with `/model` mid-session — no new credentials, no top-ups, no surprise zero-balance errors.
+Under the hood, the Portal routes each model to the backend best suited for it — some models go through OpenRouter, others through proprietary or secondary providers, and the routing for a given model can change over time. Everything is billed against your Nous subscription either way. Switch between Claude Sonnet 4.6 for code and Gemini 3 Pro for long context with `/model` mid-session — no new credentials, no top-ups, no surprise zero-balance errors.
+
+:::note
+Because routing is per-model and not always through OpenRouter, OpenRouter-specific request extensions (such as `provider` routing preferences, `session_id` sticky routing, or top-level `cache_control`) are not part of the Portal's API contract and may be ignored depending on which backend serves the model.
+:::
 
 ### The Nous Tool Gateway
 
@@ -251,7 +255,7 @@ Your Portal refresh token was invalidated (password change, manual revoke, or se
 
 ### Want to use a specific provider model that the Portal doesn't expose
 
-The Portal proxies through OpenRouter, so any model that OpenRouter supports is generally available. If a specific model isn't appearing in `/model`, try the OpenRouter-style slug directly:
+The Portal routes each model to a suitable backend — some through OpenRouter, others through proprietary or secondary providers — so most models OpenRouter supports are generally available. If a specific model isn't appearing in `/model`, try the OpenRouter-style slug directly:
 
 ```bash
 /model anthropic/claude-opus-4.6
diff --git a/website/i18n/zh-Hans/docusaurus-plugin-content-docs/current/guides/run-hermes-with-nous-portal.md b/website/i18n/zh-Hans/docusaurus-plugin-content-docs/current/guides/run-hermes-with-nous-portal.md
index fa860d93ce869..0b50318e8e555 100644
--- a/website/i18n/zh-Hans/docusaurus-plugin-content-docs/current/guides/run-hermes-with-nous-portal.md
+++ b/website/i18n/zh-Hans/docusaurus-plugin-content-docs/current/guides/run-hermes-with-nous-portal.md
@@ -225,7 +225,7 @@ hermes auth add nous
 
 ### 我想要的模型不在 `/model` 选择器中
 
-Portal 目录镜像了 OpenRouter 的模型列表（300+ 个）。如果某个模型缺失，尝试直接输入 OpenRouter 风格的 slug：
+Portal 目录基于 OpenRouter 的模型列表（300+ 个），并补充了通过专有或备用提供商提供的模型。如果某个模型缺失，尝试直接输入 OpenRouter 风格的 slug：
 
 ```bash
 /model anthropic/claude-opus-4.6
diff --git a/website/i18n/zh-Hans/docusaurus-plugin-content-docs/current/integrations/nous-portal.md b/website/i18n/zh-Hans/docusaurus-plugin-content-docs/current/integrations/nous-portal.md
index 275f77a0e84c2..771193905b691 100644
--- a/website/i18n/zh-Hans/docusaurus-plugin-content-docs/current/integrations/nous-portal.md
+++ b/website/i18n/zh-Hans/docusaurus-plugin-content-docs/current/integrations/nous-portal.md
@@ -38,7 +38,11 @@ Portal 代理了来自整个生态系统的精选 agentic 模型目录——统
 | **Hermes** | Hermes-4-70B、Hermes-4-405B（对话，见[下方说明](#a-note-on-hermes-4)） |
 | **+ 其他所有模型** | 240+ 额外模型——完整的 agentic 前沿生态 |
 
-底层路由通过 OpenRouter 实现，因此模型可用性和故障转移行为与使用 OpenRouter 密钥一致——只是计费走你的 Nous 订阅。在会话中途用 `/model` 即可在 Claude Sonnet 4.6（适合代码）和 Gemini 2.5 Pro（适合长上下文）之间切换——无需新凭证，无需充值，不会遇到余额为零的意外报错。
+底层上，Portal 会为每个模型选择最合适的后端——部分模型通过 OpenRouter 路由，其他模型则通过专有或备用提供商，且某个模型的路由方式可能随时间调整。所有用量都统一计入你的 Nous 订阅。在会话中途用 `/model` 即可在 Claude Sonnet 4.6（适合代码）和 Gemini 2.5 Pro（适合长上下文）之间切换——无需新凭证，无需充值，不会遇到余额为零的意外报错。
+
+:::note
+由于路由是按模型进行的，并非总是经过 OpenRouter，OpenRouter 专有的请求扩展（如 `provider` 路由偏好、`session_id` 粘性路由或顶层 `cache_control`）不属于 Portal 的 API 契约，可能会被忽略，具体取决于该模型由哪个后端提供服务。
+:::
 
 ### Nous Tool Gateway
 
@@ -246,7 +250,7 @@ hermes portal
 
 ### 想使用 Portal 未暴露的特定提供商模型
 
-Portal 通过 OpenRouter 代理，因此 OpenRouter 支持的所有模型通常都可用。如果某个模型未出现在 `/model` 中，可直接尝试 OpenRouter 风格的 slug：
+Portal 会为每个模型选择合适的后端——部分模型通过 OpenRouter 路由，其他模型则通过专有或备用提供商——因此 OpenRouter 支持的大多数模型通常都可用。如果某个模型未出现在 `/model` 中，可直接尝试 OpenRouter 风格的 slug：
 
 ```bash
 /model anthropic/claude-opus-4.6