diff --git a/pkg/gptscript/gptscript.go b/pkg/gptscript/gptscript.go
index f7cf01d1..a177d85c 100644
--- a/pkg/gptscript/gptscript.go
+++ b/pkg/gptscript/gptscript.go
@@ -48,26 +48,20 @@ type Options struct {
 	Env               []string
 }
 
-func complete(opts ...Options) (Options, error) {
-	var (
-		result Options
-		err    error
-	)
-
+func complete(opts ...Options) Options {
+	var result Options
 	for _, opt := range opts {
 		result.Cache = cache.Complete(result.Cache, opt.Cache)
 		result.Monitor = monitor.Complete(result.Monitor, opt.Monitor)
 		result.Runner = runner.Complete(result.Runner, opt.Runner)
-		result.OpenAI, err = openai.Complete(result.OpenAI, opt.OpenAI)
-		if err != nil {
-			return Options{}, err
-		}
+		result.OpenAI = openai.Complete(result.OpenAI, opt.OpenAI)
 
 		result.CredentialContext = types.FirstSet(opt.CredentialContext, result.CredentialContext)
 		result.Quiet = types.FirstSet(opt.Quiet, result.Quiet)
 		result.Workspace = types.FirstSet(opt.Workspace, result.Workspace)
 		result.Env = append(result.Env, opt.Env...)
 	}
+
 	if result.Quiet == nil {
 		result.Quiet = new(bool)
 	}
@@ -78,15 +72,11 @@ func complete(opts ...Options) (Options, error) {
 		result.CredentialContext = "default"
 	}
 
-	return result, nil
+	return result
 }
 
 func New(o ...Options) (*GPTScript, error) {
-	opts, err := complete(o...)
-	if err != nil {
-		return nil, err
-	}
-
+	opts := complete(o...)
 	registry := llm.NewRegistry()
 
 	cacheClient, err := cache.New(opts.Cache)
diff --git a/pkg/openai/client.go b/pkg/openai/client.go
index b93ce952..31c2cf6c 100644
--- a/pkg/openai/client.go
+++ b/pkg/openai/client.go
@@ -58,7 +58,7 @@ type Options struct {
 	Cache        *cache.Client
 }
 
-func Complete(opts ...Options) (result Options, err error) {
+func Complete(opts ...Options) (result Options) {
 	for _, opt := range opts {
 		result.BaseURL = types.FirstSet(opt.BaseURL, result.BaseURL)
 		result.APIKey = types.FirstSet(opt.APIKey, result.APIKey)
@@ -69,6 +69,12 @@ func Complete(opts ...Options) (result Options, err error) {
 		result.CacheKey = types.FirstSet(opt.CacheKey, result.CacheKey)
 	}
 
+	return result
+}
+
+func complete(opts ...Options) (Options, error) {
+	var err error
+	result := Complete(opts...)
 	if result.Cache == nil {
 		result.Cache, err = cache.New(cache.Options{
 			DisableCache: true,
@@ -87,7 +93,7 @@ func Complete(opts ...Options) (result Options, err error) {
 }
 
 func NewClient(credStore credentials.CredentialStore, opts ...Options) (*Client, error) {
-	opt, err := Complete(opts...)
+	opt, err := complete(opts...)
 	if err != nil {
 		return nil, err
 	}
diff --git a/pkg/runner/runner.go b/pkg/runner/runner.go
index 5d824cc5..f330f15f 100644
--- a/pkg/runner/runner.go
+++ b/pkg/runner/runner.go
@@ -64,6 +64,11 @@ func Complete(opts ...Options) (result Options) {
 			result.Authorizer = opt.Authorizer
 		}
 	}
+	return
+}
+
+func complete(opts ...Options) Options {
+	result := Complete(opts...)
 	if result.MonitorFactory == nil {
 		result.MonitorFactory = noopFactory{}
 	}
@@ -76,7 +81,7 @@ func Complete(opts ...Options) (result Options) {
 	if result.Authorizer == nil {
 		result.Authorizer = DefaultAuthorizer
 	}
-	return
+	return result
 }
 
 type Runner struct {
@@ -91,7 +96,7 @@ type Runner struct {
 }
 
 func New(client engine.Model, credStore credentials.CredentialStore, opts ...Options) (*Runner, error) {
-	opt := Complete(opts...)
+	opt := complete(opts...)
 
 	runner := &Runner{
 		c:              client,