diff --git a/internal/source/ai-brain/assistant.go b/internal/source/ai-brain/assistant.go
index bce4f79..14ab463 100644
--- a/internal/source/ai-brain/assistant.go
+++ b/internal/source/ai-brain/assistant.go
@@ -118,7 +118,7 @@ func newAssistant(cfg *Config, log logrus.FieldLogger, out chan source.Event, ku
 		return nil, fmt.Errorf("while creating Botkube runner: %w", err)
 	}
 
-	config := openai.DefaultConfig("")
+	config := openai.DefaultConfig(cfg.OpenAIAPIToken)
 	config.BaseURL = cfg.OpenAIBaseURL
 	config.AssistantVersion = "v2"
 
diff --git a/internal/source/ai-brain/config.go b/internal/source/ai-brain/config.go
index 883a7df..0fdd401 100644
--- a/internal/source/ai-brain/config.go
+++ b/internal/source/ai-brain/config.go
@@ -17,7 +17,8 @@ const assistantID = "asst_eMM9QaWLi6cajHE4PdG1yU53"
 type Config struct {
 	Log                    config.Logger `yaml:"log"`
 	OpenAIBaseURL          string        `yaml:"openAIBaseURL"`
-	OpenAIAssistantID      string        `yaml:"openAIAssistantId"`
+	OpenAIAssistantID      string        `yaml:"openAIAssistantID"`
+	OpenAIAPIToken         string        `yaml:"openAIAPIToken"`
 	HoneycombAPIKey        string        `yaml:"honeycombAPIKey"`
 	HoneycombSampleRate    int           `yaml:"honeycombSampleRate"`
 	VectorStoreIDForThread string        `yaml:"vectorStoreIDForThread"`
@@ -30,6 +31,9 @@ func (c *Config) Validate() error {
 	if c.OpenAIAssistantID == "" {
 		issues = multierror.Append(issues, errors.New("the Open AI Assistant ID cannot be empty"))
 	}
+	if c.OpenAIAPIToken == "" {
+		issues = multierror.Append(issues, errors.New("the Open AI API token cannot be empty"))
+	}
 	return issues.ErrorOrNil()
 }