OpenRouter: allow any model ID instead of restricting to static catalog (#14312)

* OpenRouter: allow any model ID instead of restricting to static catalog

OpenRouter models were restricted to a hardcoded prefix list in the internal model catalog, preventing use of newly added or less common models. This change makes OpenRouter work as the pass-through proxy it is -- any valid OpenRouter model ID now resolves dynamically.

Fixes https://github.com/openclaw/openclaw/issues/5241

Changes:
- Add OpenRouter as an implicit provider in resolveImplicitProviders so models.json is populated when an API key is detected (models-config.providers.ts)
- Add a pass-through fallback in resolveModel that creates OpenRouter models on-the-fly when they aren't pre-registered in the local catalog (
model.ts
)
- Remove the static prefix filter for OpenRouter/opencode in isModernModelRef (live-model-filter.ts)

* Apply requested change for maxTokens

* Agents: remove dead helper in live model filter

* Changelog: note Joly0/main OpenRouter fix

* Changelog: fix OpenRouter entry text

---------

Co-authored-by: Vincent Koc <vincentkoc@ieee.org>

src/agents/models-config.providers.ts

@@ -144,6 +144,17 @@ const OLLAMA_DEFAULT_COST = {
   cacheWrite: 0,
 };
 
+const OPENROUTER_BASE_URL = "https://openrouter.ai/api/v1";
+const OPENROUTER_DEFAULT_MODEL_ID = "auto";
+const OPENROUTER_DEFAULT_CONTEXT_WINDOW = 200000;
+const OPENROUTER_DEFAULT_MAX_TOKENS = 8192;
+const OPENROUTER_DEFAULT_COST = {
+  input: 0,
+  output: 0,
+  cacheRead: 0,
+  cacheWrite: 0,
+};
+
 const VLLM_BASE_URL = "http://127.0.0.1:8000/v1";
 const VLLM_DEFAULT_CONTEXT_WINDOW = 128000;
 const VLLM_DEFAULT_MAX_TOKENS = 8192;
@@ -659,6 +670,24 @@ function buildTogetherProvider(): ProviderConfig {
   };
 }
 
+function buildOpenrouterProvider(): ProviderConfig {
+  return {
+    baseUrl: OPENROUTER_BASE_URL,
+    api: "openai-completions",
+    models: [
+      {
+        id: OPENROUTER_DEFAULT_MODEL_ID,
+        name: "OpenRouter Auto",
+        reasoning: false,
+        input: ["text", "image"],
+        cost: OPENROUTER_DEFAULT_COST,
+        contextWindow: OPENROUTER_DEFAULT_CONTEXT_WINDOW,
+        maxTokens: OPENROUTER_DEFAULT_MAX_TOKENS,
+      },
+    ],
+  };
+}
+
 async function buildVllmProvider(params?: {
   baseUrl?: string;
   apiKey?: string;
@@ -671,6 +700,7 @@ async function buildVllmProvider(params?: {
     models,
   };
 }
+
 export function buildQianfanProvider(): ProviderConfig {
   return {
     baseUrl: QIANFAN_BASE_URL,
@@ -907,6 +937,13 @@ export async function resolveImplicitProviders(params: {
     providers.qianfan = { ...buildQianfanProvider(), apiKey: qianfanKey };
   }
 
+  const openrouterKey =
+    resolveEnvApiKeyVarName("openrouter") ??
+    resolveApiKeyFromProfiles({ provider: "openrouter", store: authStore });
+  if (openrouterKey) {
+    providers.openrouter = { ...buildOpenrouterProvider(), apiKey: openrouterKey };
+  }
+
   const nvidiaKey =
     resolveEnvApiKeyVarName("nvidia") ??
     resolveApiKeyFromProfiles({ provider: "nvidia", store: authStore });