fix(ai): only send store on chat completions for OpenAI and Azure (#57239)

Co-authored-by: rekram1-node <63023139+rekram1-node@users.noreply.github.com>

packages/ai/src/protocols/alibaba-chat.ts

@@ -43,7 +43,6 @@ export type OptionsInput = typeof Options.Type
 
 export const compatibility = {
   maxTokensField: "max_completion_tokens",
-  supportsStore: false,
   supportsStrictMode: false,
   reasoningField: "reasoning_content",
   zaiToolStream: false,

packages/ai/src/protocols/openai-chat.ts

@@ -714,46 +714,20 @@ const detectMaxTokensField = (
   return "max_completion_tokens"
 }
 
+// `store` defaults to false on OpenAI and Azure, but org-level logging can still
+// store requests that omit it, so send an explicit `store: false` there. Strict
+// OpenAI-style APIs reject the field with a 400, so omit it everywhere else.
 const detectSupportsStore = (provider: string, baseURL: string | undefined): boolean => {
   const p = provider.toLowerCase()
   const url = (baseURL ?? "").toLowerCase()
-  const isNvidia = p === "nvidia" || url.includes("integrate.api.nvidia.com")
-  const isMoonshot = p === "moonshotai" || p === "moonshotai-cn" || url.includes("api.moonshot.")
-  const isTogether = p === "togetherai" || p === "together" || url.includes("api.together.")
-  const isZai =
-    p === "zai" ||
-    p === "zai-coding-plan" ||
-    p === "zhipuai" ||
-    p === "zhipuai-coding-plan" ||
-    url.includes("api.z.ai") ||
-    url.includes("open.bigmodel.cn")
-  const isDeepSeek = p === "deepseek" || url.includes("deepseek.com")
-  const isCerebras = p === "cerebras" || url.includes("cerebras.ai")
-  const isXai = p === "xai" || url.includes("api.x.ai")
-  const isChutes = p === "chutes" || url.includes("chutes.ai")
-  const isCloudflareWorkersAI = p === "cloudflare-workers-ai" || url.includes("api.cloudflare.com")
-  const isCloudflareAiGateway = p === "cloudflare-ai-gateway" || url.includes("gateway.ai.cloudflare.com")
-  const isVercelAiGateway =
-    p === "vercel-ai-gateway" || url.includes("ai-gateway.vercel.sh") || url.includes("vercel.sh")
-  const isAntLing = p === "ant-ling" || url.includes("api.ant-ling.com")
-  const isOpencode = p === "opencode" || url.includes("opencode.ai")
-  const isGemini = url.includes("generativelanguage.googleapis.com")
-  const isNonStandard =
-    isGemini ||
-    isNvidia ||
-    isCerebras ||
-    isXai ||
-    isTogether ||
-    isChutes ||
-    isDeepSeek ||
-    isZai ||
-    isMoonshot ||
-    isOpencode ||
-    isCloudflareWorkersAI ||
-    isCloudflareAiGateway ||
-    isVercelAiGateway ||
-    isAntLing
-  return !isNonStandard
+  return (
+    p === "openai" ||
+    p === "azure" ||
+    url.includes("api.openai.com") ||
+    url.includes(".openai.azure.com") ||
+    url.includes(".cognitiveservices.azure.com") ||
+    url.includes(".services.ai.azure.com")
+  )
 }
 
 const detectSupportsUsageInStreaming = (): boolean => true
@@ -792,11 +766,7 @@ const lowerOptions = (request: LLMRequest, supportsStore: boolean) => {
   const cacheKey =
     (request.model.compatibility?.supportsPromptCacheKey ?? false) ? ProviderShared.promptCacheKey(request) : undefined
   return {
-    ...(supportsStore && options.store !== undefined ? { store: options.store } : {}),
-    // For providers that support `store`, ensure stateless `store:false` is sent
-    // even when no explicit `providerOptions.store` was supplied, mirroring the
-    // native OpenAI Chat default. Non-standard providers omit `store` entirely.
-    ...(supportsStore && options.store === undefined ? { store: false } : {}),
+    ...(supportsStore ? { store: options.store ?? false } : {}),
     ...(cacheKey ? { prompt_cache_key: cacheKey } : {}),
     ...(options.reasoningEffort ? { reasoning_effort: options.reasoningEffort } : {}),
   }

packages/ai/src/protocols/venice-chat.ts

@@ -349,7 +349,6 @@ const onHalt = Effect.fn("VeniceChat.onHalt")(function* (state: State) {
 
 export const compatibility = {
   maxTokensField: "max_completion_tokens",
-  supportsStore: false,
   supportsPromptCacheKey: true,
 } satisfies LanguageModelCompatibility
 

packages/ai/src/protocols/zai-chat.ts

@@ -64,7 +64,6 @@ const fromRequest = Effect.fn("ZAIChat.fromRequest")(function* (request: LLMRequ
 
 export const compatibility = {
   maxTokensField: "max_tokens",
-  supportsStore: false,
   supportsStrictMode: false,
   reasoningField: "reasoning_content",
   zaiToolStream: false,

packages/ai/src/providers/cerebras.ts

@@ -47,7 +47,6 @@ export const configure = (input: LanguageModelOptions = {}) => {
         compatibility: {
           maxTokensField: "max_tokens",
           reasoningField: "reasoning",
-          supportsStore: false,
           supportsPromptCacheKey: true,
         },
       }),

packages/ai/src/providers/cohere.ts

@@ -42,7 +42,6 @@ export const configure = (input: LanguageModelOptions = {}) => {
         id: modelID,
         compatibility: {
           maxTokensField: "max_tokens",
-          supportsStore: false,
           supportsUsageInStreaming: true,
           reasoningField: "reasoning_content",
           supportsStrictMode: false,

packages/ai/src/providers/deepinfra.ts

@@ -50,7 +50,6 @@ export const configure = (input: LanguageModelOptions = {}) => {
         compatibility: {
           maxTokensField: "max_tokens",
           reasoningField: "reasoning_content",
-          supportsStore: false,
           supportsPromptCacheKey: true,
         },
       }),

packages/ai/src/providers/deepseek.ts

@@ -44,7 +44,7 @@ export const configure = (input: LanguageModelOptions = {}) => {
     model: (modelID: string | ModelID) =>
       configured.model<OpenAIProviderOptionsInput>({
         id: modelID,
-        compatibility: { maxTokensField: "max_tokens", supportsStore: false },
+        compatibility: { maxTokensField: "max_tokens" },
       }),
     configure,
   }

packages/ai/src/providers/groq.ts

@@ -93,7 +93,6 @@ export const configure = (input: LanguageModelOptions = {}) => {
           maxTokensField: "max_completion_tokens",
           reasoningField: "reasoning",
           requireReasoning: false,
-          supportsStore: false,
           supportsStrictMode: false,
         },
       }),

packages/ai/src/providers/meta.ts

@@ -133,7 +133,7 @@ export const configure = (input: LanguageModelOptions = {}) => {
   const chat = (modelID: string | ModelID) =>
     configuredChat.model<OpenResponsesProviderOptionsInput>({
       id: modelID,
-      compatibility: { maxTokensField: "max_completion_tokens", supportsStore: false, supportsPromptCacheKey: true },
+      compatibility: { maxTokensField: "max_completion_tokens", supportsPromptCacheKey: true },
     })
   const messages = (modelID: string | ModelID) =>
     configuredMessages.model<MessagesOptionsInput>({

packages/ai/src/providers/minimax.ts

@@ -116,7 +116,7 @@ export const configure = (input: Config = {}) => {
   const chat = (modelID: string | ModelID) =>
     chatRoute.with(defaults).model<ChatOptionsInput>({
       id: modelID,
-      compatibility: { supportsStore: false, supportsStrictMode: false },
+      compatibility: { supportsStrictMode: false },
     })
   const responses = (modelID: string | ModelID) =>
     responsesRoute.with(defaults).model<ResponsesOptionsInput>({ id: modelID })

packages/ai/src/providers/moonshot.ts

@@ -110,7 +110,6 @@ export const configure = (input: Config = {}) => {
       id: modelID,
       compatibility: {
         maxTokensField: "max_tokens",
-        supportsStore: false,
         supportsStrictMode: false,
         supportsPromptCacheKey: true,
         sanitizer: "moonshot",

packages/ai/src/providers/togetherai.ts

@@ -44,7 +44,7 @@ export const configure = (input: LanguageModelOptions = {}) => {
     model: (modelID: string | ModelID) =>
       configured.model<OpenAIProviderOptionsInput>({
         id: modelID,
-        compatibility: { maxTokensField: "max_tokens", supportsStore: false, supportsStrictMode: false },
+        compatibility: { maxTokensField: "max_tokens", supportsStrictMode: false },
       }),
     configure,
   }

packages/ai/test/fixtures/recordings/digitalocean-chat/gpt-nano-continues-a-tool-call-with-cache-markers.json

@@ -22,7 +22,7 @@
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"openai-gpt-5-nano\",\"messages\":[{\"role\":\"system\",\"content\":[{\"type\":\"text\",\"text\":\"Use the get_weather tool exactly once. After the tool result, reply exactly: Paris is sunny.\",\"cache_control\":{\"type\":\"ephemeral\"}}]},{\"role\":\"user\",\"content\":[{\"type\":\"text\",\"text\":\"What is the weather in Paris?\",\"cache_control\":{\"type\":\"ephemeral\"}}]}],\"tools\":[{\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"description\":\"Get current weather for a city.\",\"parameters\":{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}},\"required\":[\"city\"],\"additionalProperties\":false},\"strict\":false},\"cache_control\":{\"type\":\"ephemeral\"}}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"store\":false,\"reasoning_effort\":\"minimal\",\"max_completion_tokens\":1024}"
+        "body": "{\"model\":\"openai-gpt-5-nano\",\"messages\":[{\"role\":\"system\",\"content\":[{\"type\":\"text\",\"text\":\"Use the get_weather tool exactly once. After the tool result, reply exactly: Paris is sunny.\",\"cache_control\":{\"type\":\"ephemeral\"}}]},{\"role\":\"user\",\"content\":[{\"type\":\"text\",\"text\":\"What is the weather in Paris?\",\"cache_control\":{\"type\":\"ephemeral\"}}]}],\"tools\":[{\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"description\":\"Get current weather for a city.\",\"parameters\":{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}},\"required\":[\"city\"],\"additionalProperties\":false},\"strict\":false},\"cache_control\":{\"type\":\"ephemeral\"}}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"reasoning_effort\":\"minimal\",\"max_completion_tokens\":1024}"
       },
       "response": {
         "status": 200,
@@ -40,7 +40,7 @@
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"openai-gpt-5-nano\",\"messages\":[{\"role\":\"system\",\"content\":[{\"type\":\"text\",\"text\":\"Use the get_weather tool exactly once. After the tool result, reply exactly: Paris is sunny.\",\"cache_control\":{\"type\":\"ephemeral\"}}]},{\"role\":\"user\",\"content\":\"What is the weather in Paris?\"},{\"role\":\"assistant\",\"content\":null,\"tool_calls\":[{\"id\":\"call_zPwN7xhG4uXQINkufgtjVJ7L\",\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"arguments\":\"{\\\"city\\\":\\\"Paris\\\"}\"}}]},{\"role\":\"tool\",\"tool_call_id\":\"call_zPwN7xhG4uXQINkufgtjVJ7L\",\"content\":[{\"type\":\"text\",\"text\":\"{\\\"temperature\\\":22,\\\"condition\\\":\\\"sunny\\\"}\",\"cache_control\":{\"type\":\"ephemeral\"}}]}],\"tools\":[{\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"description\":\"Get current weather for a city.\",\"parameters\":{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}},\"required\":[\"city\"],\"additionalProperties\":false},\"strict\":false},\"cache_control\":{\"type\":\"ephemeral\"}}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"store\":false,\"reasoning_effort\":\"minimal\",\"max_completion_tokens\":1024}"
+        "body": "{\"model\":\"openai-gpt-5-nano\",\"messages\":[{\"role\":\"system\",\"content\":[{\"type\":\"text\",\"text\":\"Use the get_weather tool exactly once. After the tool result, reply exactly: Paris is sunny.\",\"cache_control\":{\"type\":\"ephemeral\"}}]},{\"role\":\"user\",\"content\":\"What is the weather in Paris?\"},{\"role\":\"assistant\",\"content\":null,\"tool_calls\":[{\"id\":\"call_zPwN7xhG4uXQINkufgtjVJ7L\",\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"arguments\":\"{\\\"city\\\":\\\"Paris\\\"}\"}}]},{\"role\":\"tool\",\"tool_call_id\":\"call_zPwN7xhG4uXQINkufgtjVJ7L\",\"content\":[{\"type\":\"text\",\"text\":\"{\\\"temperature\\\":22,\\\"condition\\\":\\\"sunny\\\"}\",\"cache_control\":{\"type\":\"ephemeral\"}}]}],\"tools\":[{\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"description\":\"Get current weather for a city.\",\"parameters\":{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}},\"required\":[\"city\"],\"additionalProperties\":false},\"strict\":false},\"cache_control\":{\"type\":\"ephemeral\"}}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"reasoning_effort\":\"minimal\",\"max_completion_tokens\":1024}"
       },
       "response": {
         "status": 200,

packages/ai/test/fixtures/recordings/digitalocean-chat/haiku-continues-a-tool-call-with-cache-markers.json

@@ -22,7 +22,7 @@
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"anthropic-claude-haiku-4.5\",\"messages\":[{\"role\":\"system\",\"content\":[{\"type\":\"text\",\"text\":\"Use the get_weather tool exactly once. After the tool result, reply exactly: Paris is sunny.\",\"cache_control\":{\"type\":\"ephemeral\"}}]},{\"role\":\"user\",\"content\":[{\"type\":\"text\",\"text\":\"What is the weather in Paris?\",\"cache_control\":{\"type\":\"ephemeral\"}}]}],\"tools\":[{\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"description\":\"Get current weather for a city.\",\"parameters\":{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}},\"required\":[\"city\"],\"additionalProperties\":false},\"strict\":false},\"cache_control\":{\"type\":\"ephemeral\"}}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"store\":false,\"max_completion_tokens\":128}"
+        "body": "{\"model\":\"anthropic-claude-haiku-4.5\",\"messages\":[{\"role\":\"system\",\"content\":[{\"type\":\"text\",\"text\":\"Use the get_weather tool exactly once. After the tool result, reply exactly: Paris is sunny.\",\"cache_control\":{\"type\":\"ephemeral\"}}]},{\"role\":\"user\",\"content\":[{\"type\":\"text\",\"text\":\"What is the weather in Paris?\",\"cache_control\":{\"type\":\"ephemeral\"}}]}],\"tools\":[{\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"description\":\"Get current weather for a city.\",\"parameters\":{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}},\"required\":[\"city\"],\"additionalProperties\":false},\"strict\":false},\"cache_control\":{\"type\":\"ephemeral\"}}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"max_completion_tokens\":128}"
       },
       "response": {
         "status": 200,
@@ -40,7 +40,7 @@
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"anthropic-claude-haiku-4.5\",\"messages\":[{\"role\":\"system\",\"content\":[{\"type\":\"text\",\"text\":\"Use the get_weather tool exactly once. After the tool result, reply exactly: Paris is sunny.\",\"cache_control\":{\"type\":\"ephemeral\"}}]},{\"role\":\"user\",\"content\":\"What is the weather in Paris?\"},{\"role\":\"assistant\",\"content\":null,\"tool_calls\":[{\"id\":\"toolu_014LEa2F66CGw2SoLmWBeH5C\",\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"arguments\":\"{\\\"city\\\":\\\"Paris\\\"}\"}}]},{\"role\":\"tool\",\"tool_call_id\":\"toolu_014LEa2F66CGw2SoLmWBeH5C\",\"content\":[{\"type\":\"text\",\"text\":\"{\\\"temperature\\\":22,\\\"condition\\\":\\\"sunny\\\"}\",\"cache_control\":{\"type\":\"ephemeral\"}}]}],\"tools\":[{\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"description\":\"Get current weather for a city.\",\"parameters\":{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}},\"required\":[\"city\"],\"additionalProperties\":false},\"strict\":false},\"cache_control\":{\"type\":\"ephemeral\"}}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"store\":false,\"max_completion_tokens\":128}"
+        "body": "{\"model\":\"anthropic-claude-haiku-4.5\",\"messages\":[{\"role\":\"system\",\"content\":[{\"type\":\"text\",\"text\":\"Use the get_weather tool exactly once. After the tool result, reply exactly: Paris is sunny.\",\"cache_control\":{\"type\":\"ephemeral\"}}]},{\"role\":\"user\",\"content\":\"What is the weather in Paris?\"},{\"role\":\"assistant\",\"content\":null,\"tool_calls\":[{\"id\":\"toolu_014LEa2F66CGw2SoLmWBeH5C\",\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"arguments\":\"{\\\"city\\\":\\\"Paris\\\"}\"}}]},{\"role\":\"tool\",\"tool_call_id\":\"toolu_014LEa2F66CGw2SoLmWBeH5C\",\"content\":[{\"type\":\"text\",\"text\":\"{\\\"temperature\\\":22,\\\"condition\\\":\\\"sunny\\\"}\",\"cache_control\":{\"type\":\"ephemeral\"}}]}],\"tools\":[{\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"description\":\"Get current weather for a city.\",\"parameters\":{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}},\"required\":[\"city\"],\"additionalProperties\":false},\"strict\":false},\"cache_control\":{\"type\":\"ephemeral\"}}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"max_completion_tokens\":128}"
       },
       "response": {
         "status": 200,

packages/ai/test/fixtures/recordings/openrouter-reasoning-tool-loop.json

@@ -23,7 +23,7 @@
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"anthropic/claude-sonnet-4.6\",\"messages\":[{\"role\":\"system\",\"content\":\"Use the get_weather tool exactly once. After the tool result, reply exactly: Paris is sunny.\"},{\"role\":\"user\",\"content\":\"What is the weather in Paris?\"}],\"tools\":[{\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"description\":\"Get current weather for a city.\",\"parameters\":{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}},\"required\":[\"city\"],\"additionalProperties\":false},\"strict\":false}}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"reasoning\":{\"max_tokens\":1024},\"max_completion_tokens\":1536,\"store\":false,\"usage\":{\"include\":true}}"
+        "body": "{\"model\":\"anthropic/claude-sonnet-4.6\",\"messages\":[{\"role\":\"system\",\"content\":\"Use the get_weather tool exactly once. After the tool result, reply exactly: Paris is sunny.\"},{\"role\":\"user\",\"content\":\"What is the weather in Paris?\"}],\"tools\":[{\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"description\":\"Get current weather for a city.\",\"parameters\":{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}},\"required\":[\"city\"],\"additionalProperties\":false},\"strict\":false}}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"reasoning\":{\"max_tokens\":1024},\"max_completion_tokens\":1536,\"usage\":{\"include\":true}}"
       },
       "response": {
         "status": 200,
@@ -41,7 +41,7 @@
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"anthropic/claude-sonnet-4.6\",\"messages\":[{\"role\":\"system\",\"content\":\"Use the get_weather tool exactly once. After the tool result, reply exactly: Paris is sunny.\"},{\"role\":\"user\",\"content\":\"What is the weather in Paris?\"},{\"role\":\"assistant\",\"content\":\"Sure! Let me check the weather in Paris for you right now!\",\"tool_calls\":[{\"id\":\"toolu_01PaChhcyw3yu2P2bDS2bgAA\",\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"arguments\":\"{\\\"city\\\":\\\"Paris\\\"}\"}}],\"reasoning\":\"The user wants to know the weather in Paris. I'll use the get_weather tool.\",\"reasoning_details\":[{\"type\":\"reasoning.text\",\"text\":\"The user wants to know the weather in Paris. I'll use the get_weather tool.\",\"format\":\"anthropic-claude-v1\",\"index\":0,\"signature\":\"ErkCCosBCA8YAipAjKnRKpxkZ4eHrMPJ63IWEOYPSzb+XSHyG+vLK+2ks2O9T4N9M37Xn2kausQSH1rfsrdmKxgUlBg6yUFRgMVR7DIRY2xhdWRlLXNvbm5ldC00LTY4AEIIdGhpbmtpbmdaJDRjMGYwNDZmLTI1ZmQtNDVmYi1iZmIzLWEwOGE4ZTI0OWNhNxIMNFb5O6pb4nX0HojdGgyL5h+CAIpsxpdM1QgiMGm/i3ST6F5mAhxB+Uez0Cm95ra9yvQkrzHaA/AmWoXpdmPlczSn1S1RDk2IqeA57Spbf7JT44jygtLQt6yZmGzoTBHn3VkwaNZsuuAtbdo4B5QJXooa/AoKKs54QZ2kfS640vsv5flQVCg7CoQCFuLKjIeLMO7MnxVyuskXJr1DgesTa7I0ScF53U9JGhgB\"}]},{\"role\":\"tool\",\"tool_call_id\":\"toolu_01PaChhcyw3yu2P2bDS2bgAA\",\"content\":\"{\\\"temperature\\\":22,\\\"condition\\\":\\\"sunny\\\"}\"}],\"tools\":[{\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"description\":\"Get current weather for a city.\",\"parameters\":{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}},\"required\":[\"city\"],\"additionalProperties\":false},\"strict\":false}}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"reasoning\":{\"max_tokens\":1024},\"max_completion_tokens\":1536,\"store\":false,\"usage\":{\"include\":true}}"
+        "body": "{\"model\":\"anthropic/claude-sonnet-4.6\",\"messages\":[{\"role\":\"system\",\"content\":\"Use the get_weather tool exactly once. After the tool result, reply exactly: Paris is sunny.\"},{\"role\":\"user\",\"content\":\"What is the weather in Paris?\"},{\"role\":\"assistant\",\"content\":\"Sure! Let me check the weather in Paris for you right now!\",\"tool_calls\":[{\"id\":\"toolu_01PaChhcyw3yu2P2bDS2bgAA\",\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"arguments\":\"{\\\"city\\\":\\\"Paris\\\"}\"}}],\"reasoning\":\"The user wants to know the weather in Paris. I'll use the get_weather tool.\",\"reasoning_details\":[{\"type\":\"reasoning.text\",\"text\":\"The user wants to know the weather in Paris. I'll use the get_weather tool.\",\"format\":\"anthropic-claude-v1\",\"index\":0,\"signature\":\"ErkCCosBCA8YAipAjKnRKpxkZ4eHrMPJ63IWEOYPSzb+XSHyG+vLK+2ks2O9T4N9M37Xn2kausQSH1rfsrdmKxgUlBg6yUFRgMVR7DIRY2xhdWRlLXNvbm5ldC00LTY4AEIIdGhpbmtpbmdaJDRjMGYwNDZmLTI1ZmQtNDVmYi1iZmIzLWEwOGE4ZTI0OWNhNxIMNFb5O6pb4nX0HojdGgyL5h+CAIpsxpdM1QgiMGm/i3ST6F5mAhxB+Uez0Cm95ra9yvQkrzHaA/AmWoXpdmPlczSn1S1RDk2IqeA57Spbf7JT44jygtLQt6yZmGzoTBHn3VkwaNZsuuAtbdo4B5QJXooa/AoKKs54QZ2kfS640vsv5flQVCg7CoQCFuLKjIeLMO7MnxVyuskXJr1DgesTa7I0ScF53U9JGhgB\"}]},{\"role\":\"tool\",\"tool_call_id\":\"toolu_01PaChhcyw3yu2P2bDS2bgAA\",\"content\":\"{\\\"temperature\\\":22,\\\"condition\\\":\\\"sunny\\\"}\"}],\"tools\":[{\"type\":\"function\",\"function\":{\"name\":\"get_weather\",\"description\":\"Get current weather for a city.\",\"parameters\":{\"type\":\"object\",\"properties\":{\"city\":{\"type\":\"string\"}},\"required\":[\"city\"],\"additionalProperties\":false},\"strict\":false}}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"reasoning\":{\"max_tokens\":1024},\"max_completion_tokens\":1536,\"usage\":{\"include\":true}}"
       },
       "response": {
         "status": 200,

packages/ai/test/fixtures/recordings/openrouter-reasoning.json

@@ -15,7 +15,7 @@
         "headers": {
           "content-type": "application/json"
         },
-        "body": "{\"model\":\"anthropic/claude-sonnet-4.6\",\"messages\":[{\"role\":\"system\",\"content\":[{\"type\":\"text\",\"text\":\"Think through the arithmetic, then reply with only the final integer.\",\"cache_control\":{\"type\":\"ephemeral\"}}]},{\"role\":\"user\",\"content\":[{\"type\":\"text\",\"text\":\"What is 173 multiplied by 219?\",\"cache_control\":{\"type\":\"ephemeral\"}}]}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"store\":false,\"max_completion_tokens\":1536,\"temperature\":0,\"usage\":{\"include\":true},\"reasoning\":{\"max_tokens\":1024}}"
+        "body": "{\"model\":\"anthropic/claude-sonnet-4.6\",\"messages\":[{\"role\":\"system\",\"content\":[{\"type\":\"text\",\"text\":\"Think through the arithmetic, then reply with only the final integer.\",\"cache_control\":{\"type\":\"ephemeral\"}}]},{\"role\":\"user\",\"content\":[{\"type\":\"text\",\"text\":\"What is 173 multiplied by 219?\",\"cache_control\":{\"type\":\"ephemeral\"}}]}],\"stream\":true,\"stream_options\":{\"include_usage\":true},\"max_completion_tokens\":1536,\"temperature\":0,\"usage\":{\"include\":true},\"reasoning\":{\"max_tokens\":1024}}"
       },
       "response": {
         "status": 200,

packages/ai/test/provider/native-providers.test.ts

@@ -83,13 +83,13 @@ describe("native OpenAI-compatible providers", () => {
 
     expect(together).toMatchObject({
       provider: "togetherai",
-      compatibility: { maxTokensField: "max_tokens", supportsStore: false, supportsStrictMode: false },
+      compatibility: { maxTokensField: "max_tokens", supportsStrictMode: false },
       route: { id: "togetherai-chat", protocol: "openai-chat" },
     })
     expect(together.route.endpoint.baseURL).toBe("https://api.together.xyz/v1")
     expect(cerebras).toMatchObject({
       provider: "cerebras",
-      compatibility: { maxTokensField: "max_tokens", reasoningField: "reasoning", supportsStore: false },
+      compatibility: { maxTokensField: "max_tokens", reasoningField: "reasoning" },
       route: { id: "cerebras-chat", protocol: "openai-chat" },
     })
     expect(cerebras.route.endpoint.baseURL).toBe("https://api.cerebras.ai/v1")
@@ -129,7 +129,7 @@ describe("native OpenAI-compatible providers", () => {
     const deepinfra = DeepInfra.configure({ apiKey: "fixture" }).model("google/gemma-3-27b-it")
     expect(deepinfra).toMatchObject({
       provider: "deepinfra",
-      compatibility: { maxTokensField: "max_tokens", reasoningField: "reasoning_content", supportsStore: false },
+      compatibility: { maxTokensField: "max_tokens", reasoningField: "reasoning_content" },
       route: { id: "deepinfra-chat", protocol: "openai-chat" },
     })
     expect(deepinfra.route.endpoint.baseURL).toBe("https://api.deepinfra.com/v1/openai")

packages/ai/test/provider/openai-chat.test.ts

@@ -64,6 +64,44 @@ describe("OpenAI Chat route", () => {
     }),
   )
 
+  it.effect("sends store only to OpenAI and Azure unless compatibility opts in", () =>
+    Effect.gen(function* () {
+      const compatible = OpenAICompatible.configure({ baseURL: "https://api.compatible.test/v1", apiKey: "test" })
+      const omitted = yield* compileRequest(
+        LLM.request({ model: compatible.model("compatible-model"), prompt: "Hello", providerOptions: { store: true } }),
+      )
+      const optedIn = yield* compileRequest(
+        LLM.request({
+          model: LanguageModel.update(compatible.model("compatible-model"), {
+            compatibility: { supportsStore: true },
+          }),
+          prompt: "Hello",
+        }),
+      )
+      const openaiHost = yield* compileRequest(
+        LLM.request({
+          model: OpenAICompatible.configure({ baseURL: "https://api.openai.com/v1", apiKey: "test" }).model(
+            "gpt-4o-mini",
+          ),
+          prompt: "Hello",
+        }),
+      )
+      const azure = yield* compileRequest(
+        LLM.request({
+          model: Azure.configure({ baseURL: "https://opencode-test.openai.azure.com/openai/", apiKey: "test" }).chat(
+            "gpt-4o-mini",
+          ),
+          prompt: "Hello",
+        }),
+      )
+
+      expect(omitted.body).not.toHaveProperty("store")
+      expect(optedIn.body.store).toBe(false)
+      expect(openaiHost.body.store).toBe(false)
+      expect(azure.body.store).toBe(false)
+    }),
+  )
+
   it.effect("lowers chronological system updates to escaped user wrappers in order", () =>
     Effect.gen(function* () {
       const prepared = yield* compileRequest(