diff --git a/src/agents/openai-completions-compat.ts b/src/agents/openai-completions-compat.ts
index ebc9825d27e..544eb6081d2 100644
--- a/src/agents/openai-completions-compat.ts
+++ b/src/agents/openai-completions-compat.ts
@@ -67,6 +67,7 @@ export function resolveOpenAICompletionsCompatDefaults(
     endpointClass === "mistral-public" ||
     knownProviderFamily === "mistral" ||
     (isDefaultRoute && isDefaultRouteProvider(provider, "chutes"));
+  const isOllamaCompatProvider = provider === "ollama";
   return {
     supportsStore:
       !isNonStandard && knownProviderFamily !== "mistral" && !usesExplicitProxyLikeEndpoint,
@@ -77,7 +78,8 @@ export function resolveOpenAICompletionsCompatDefaults(
       endpointClass !== "xai-native" &&
       !usesExplicitProxyLikeEndpoint,
     supportsUsageInStreaming:
-      !isNonStandard && (!usesConfiguredNonOpenAIEndpoint || supportsNativeStreamingUsageCompat),
+      isOllamaCompatProvider ||
+      (!isNonStandard && (!usesConfiguredNonOpenAIEndpoint || supportsNativeStreamingUsageCompat)),
     maxTokensField: usesMaxTokens ? "max_tokens" : "max_completion_tokens",
     thinkingFormat: isZai ? "zai" : isOpenRouterLike ? "openrouter" : "openai",
     visibleReasoningDetailTypes: isOpenRouterLike ? ["response.output_text", "response.text"] : [],