diff --git a/src/Providers/DeepSeek/Handlers/Stream.php b/src/Providers/DeepSeek/Handlers/Stream.php
index 8ae26e57b..36701c4e3 100644
--- a/src/Providers/DeepSeek/Handlers/Stream.php
+++ b/src/Providers/DeepSeek/Handlers/Stream.php
@@ -137,7 +137,7 @@ protected function processStream(Response $response, Request $request, int $dept
             }
 
             $reasoningDelta = $this->extractReasoningDelta($data);
-            if ($reasoningDelta !== '' && $reasoningDelta !== '0') {
+            if ($reasoningDelta !== '') {
                 if ($this->state->shouldEmitThinkingStart()) {
                     $this->state->withReasoningId(EventID::generate())->markThinkingStarted();
 
@@ -158,7 +158,7 @@ protected function processStream(Response $response, Request $request, int $dept
                 continue;
             }
 
-            if ($this->state->hasThinkingStarted() && $reasoningDelta === '') {
+            if ($this->state->hasThinkingStarted()) {
                 yield new ThinkingCompleteEvent(
                     id: EventID::generate(),
                     timestamp: time(),
@@ -167,7 +167,7 @@ protected function processStream(Response $response, Request $request, int $dept
             }
 
             $content = $this->extractContentDelta($data);
-            if ($content !== '' && $content !== '0') {
+            if ($content !== '') {
                 if ($this->state->shouldEmitTextStart()) {
                     $this->state->markTextStarted();
 
@@ -300,15 +300,18 @@ protected function extractToolCalls(array $data, array $toolCalls): array
                 ];
             }
 
-            if ($id = data_get($deltaToolCall, 'id')) {
+            $id = data_get($deltaToolCall, 'id');
+            if ($id !== null) {
                 $toolCalls[$index]['id'] = $id;
             }
 
-            if ($name = data_get($deltaToolCall, 'function.name')) {
+            $name = data_get($deltaToolCall, 'function.name');
+            if ($name !== null) {
                 $toolCalls[$index]['name'] = $name;
             }
 
-            if ($arguments = data_get($deltaToolCall, 'function.arguments')) {
+            $arguments = data_get($deltaToolCall, 'function.arguments');
+            if ($arguments !== null) {
                 $toolCalls[$index]['arguments'] .= $arguments;
             }
         }
diff --git a/src/Providers/Ollama/Handlers/Stream.php b/src/Providers/Ollama/Handlers/Stream.php
index b5544c111..79e1eab6c 100644
--- a/src/Providers/Ollama/Handlers/Stream.php
+++ b/src/Providers/Ollama/Handlers/Stream.php
@@ -253,14 +253,15 @@ protected function parseNextDataLine(StreamInterface $stream): ?array
     protected function extractToolCalls(array $data, array $toolCalls): array
     {
         foreach (data_get($data, 'message.tool_calls', []) as $index => $toolCall) {
-            if ($name = data_get($toolCall, 'function.name')) {
+            $name = data_get($toolCall, 'function.name');
+            if ($name !== null) {
                 $toolCalls[$index]['name'] = $name;
                 $toolCalls[$index]['arguments'] = '';
                 $toolCalls[$index]['id'] = data_get($toolCall, 'id');
             }
 
-            if ($arguments = data_get($toolCall, 'function.arguments')) {
-
+            $arguments = data_get($toolCall, 'function.arguments');
+            if ($arguments !== null) {
                 $argumentValue = is_array($arguments) ? json_encode($arguments) : $arguments;
                 $toolCalls[$index]['arguments'] .= $argumentValue;
             }
diff --git a/src/Providers/XAI/Handlers/Stream.php b/src/Providers/XAI/Handlers/Stream.php
index 1edac9f2a..101acb870 100644
--- a/src/Providers/XAI/Handlers/Stream.php
+++ b/src/Providers/XAI/Handlers/Stream.php
@@ -111,7 +111,7 @@ protected function processStream(Response $response, Request $request, int $dept
 
             $thinkingContent = $this->extractThinking($data, $request);
 
-            if ($thinkingContent !== '' && $thinkingContent !== '0') {
+            if ($thinkingContent !== '') {
                 if ($this->state->shouldEmitThinkingStart()) {
                     $this->state
                         ->withReasoningId(EventID::generate())
@@ -134,7 +134,7 @@ protected function processStream(Response $response, Request $request, int $dept
                 continue;
             }
 
-            if ($this->state->hasThinkingStarted() && $thinkingContent === '') {
+            if ($this->state->hasThinkingStarted()) {
                 yield new ThinkingCompleteEvent(
                     id: EventID::generate(),
                     timestamp: time(),
@@ -291,15 +291,18 @@ protected function extractToolCalls(array $data, array $toolCalls): array
                 ];
             }
 
-            if ($id = data_get($deltaToolCall, 'id')) {
+            $id = data_get($deltaToolCall, 'id');
+            if ($id !== null) {
                 $toolCalls[$index]['id'] = $id;
             }
 
-            if ($name = data_get($deltaToolCall, 'function.name')) {
+            $name = data_get($deltaToolCall, 'function.name');
+            if ($name !== null) {
                 $toolCalls[$index]['name'] = $name;
             }
 
-            if ($arguments = data_get($deltaToolCall, 'function.arguments')) {
+            $arguments = data_get($deltaToolCall, 'function.arguments');
+            if ($arguments !== null) {
                 $toolCalls[$index]['arguments'] .= $arguments;
             }
         }