diff --git a/packages/core/src/github-copilot/chat/openai-compatible-chat-language-model.ts b/packages/core/src/github-copilot/chat/openai-compatible-chat-language-model.ts
index 280970c41b4f..52df3624ea72 100644
--- a/packages/core/src/github-copilot/chat/openai-compatible-chat-language-model.ts
+++ b/packages/core/src/github-copilot/chat/openai-compatible-chat-language-model.ts
@@ -645,6 +645,15 @@ export class OpenAICompatibleChatLanguageModel implements LanguageModelV3 {
           },
 
           flush(controller) {
+            // If the stream ended without a finish_reason and output is still
+            // active, the stream was truncated — emit an error to trigger retry
+            const hasActiveOutput = isActiveReasoning || isActiveText || toolCalls.some((tc) => !tc.hasFinished)
+            if (finishReason.unified === "other" && finishReason.raw === undefined && hasActiveOutput) {
+              controller.enqueue({
+                type: "error",
+                error: new Error("Stream ended unexpectedly — no finish reason received while output was still active"),
+              })
+            }
             if (isActiveReasoning) {
               controller.enqueue({
                 type: "reasoning-end",
diff --git a/packages/opencode/script/build.ts b/packages/opencode/script/build.ts
index fd5712333c57..c44ef8bdf8d5 100755
--- a/packages/opencode/script/build.ts
+++ b/packages/opencode/script/build.ts
@@ -180,7 +180,7 @@ for (const item of targets) {
       autoloadPackageJson: true,
       target: name.replace(pkg.name, "bun") as any,
       outfile: `dist/${name}/bin/opencode`,
-      execArgv: [`--user-agent=opencode/${Script.version}`, "--use-system-ca", "--"],
+      execArgv: [`--user-agent=opencode/${Script.version}`, "--use-system-ca", "--no-orphans", "--"],
       windows: {},
     },
     files: embeddedFileMap ? { "opencode-web-ui.gen.ts": embeddedFileMap } : {},
diff --git a/packages/opencode/src/provider/provider.ts b/packages/opencode/src/provider/provider.ts
index 2142f843404c..276ce5f28826 100644
--- a/packages/opencode/src/provider/provider.ts
+++ b/packages/opencode/src/provider/provider.ts
@@ -970,6 +970,7 @@ const ProviderCapabilities = Schema.Struct({
   input: ProviderModalities,
   output: ProviderModalities,
   interleaved: ProviderInterleaved,
+  systemMessage: Schema.optional(Schema.Union([Schema.Literal("single"), Schema.Literal("multiple")])),
 })
 
 const ProviderCacheCost = Schema.Struct({
@@ -1413,7 +1414,10 @@ export const layer = Layer.effect(
                 input: {
                   text: model.modalities?.input?.includes("text") ?? existingModel?.capabilities.input.text ?? true,
                   audio: model.modalities?.input?.includes("audio") ?? existingModel?.capabilities.input.audio ?? false,
-                  image: model.modalities?.input?.includes("image") ?? existingModel?.capabilities.input.image ?? false,
+                  image:
+                    model.modalities?.input?.includes("image") ??
+                    existingModel?.capabilities.input.image ??
+                    (provider.npm === "@ai-sdk/openai-compatible" ? true : false),
                   video: model.modalities?.input?.includes("video") ?? existingModel?.capabilities.input.video ?? false,
                   pdf: model.modalities?.input?.includes("pdf") ?? existingModel?.capabilities.input.pdf ?? false,
                 },
diff --git a/packages/opencode/src/session/message-v2.ts b/packages/opencode/src/session/message-v2.ts
index c57fcd53c96f..193fe8e27a19 100644
--- a/packages/opencode/src/session/message-v2.ts
+++ b/packages/opencode/src/session/message-v2.ts
@@ -711,6 +711,15 @@ export function fromError(
         },
         { cause: e },
       ).toObject()
+    case e instanceof Error && e.message === "SSE read timed out":
+      return new APIError(
+        {
+          message: "Stream read timed out — no data received within the chunk timeout window",
+          isRetryable: true,
+          metadata: { code: "SSE_TIMEOUT", message: e.message },
+        },
+        { cause: e },
+      ).toObject()
     case e instanceof Error:
       return new NamedError.Unknown({ message: errorMessage(e) }, { cause: e }).toObject()
     default:
diff --git a/packages/opencode/src/session/retry.ts b/packages/opencode/src/session/retry.ts
index 4139665bd2bd..b3039d6e02f6 100644
--- a/packages/opencode/src/session/retry.ts
+++ b/packages/opencode/src/session/retry.ts
@@ -122,14 +122,18 @@ export function retryable(error: Err, provider: string) {
     return { message: error.data.message.includes("Overloaded") ? "Provider is overloaded" : error.data.message }
   }
 
-  // Check for rate limit patterns in plain text error messages
+  // Check for stream interruption and rate limit patterns in plain text error messages
   const msg = isRecord(error.data) ? error.data.message : undefined
   if (typeof msg === "string") {
     const lower = msg.toLowerCase()
     if (
       lower.includes("rate increased too quickly") ||
       lower.includes("rate limit") ||
-      lower.includes("too many requests")
+      lower.includes("too many requests") ||
+      lower.includes("sse read timed out") ||
+      lower.includes("connection reset") ||
+      lower.includes("aborted") ||
+      lower.includes("stream ended unexpectedly")
     ) {
       return { message: msg }
     }