feat: add default model provider option

Signed-off-by: Donnie Adams <[email protected]>

Author: thedadams

README.md

@@ -26,7 +26,8 @@ When creating a `GTPScript` instance, you can pass the following global options.
 
 - `APIKey`: Specify an OpenAI API key for authenticating requests
 - `BaseURL`: A base URL for an OpenAI compatible API (the default is `https://api.openai.com/v1`)
-- `DefaultModel`: The default model to use for OpenAI requests
+- `DefaultModel`: The default model to use for chat completion requests
+- `DefaultModelProvider`: The default model provider to use for chat completion requests
 - `Env`: Supply the environment variables. Supplying anything here means that nothing from the environment is used. The default is `os.Environ()`. Supplying `Env` at the run/evaluate level will be treated as "additional." 
 
 ## Run Options

opts.go

@@ -3,10 +3,11 @@ package gptscript
 // GlobalOptions allows specification of settings that are used for every call made.
 // These options can be overridden by the corresponding Options.
 type GlobalOptions struct {
-	OpenAIAPIKey  string   `json:"APIKey"`
-	OpenAIBaseURL string   `json:"BaseURL"`
-	DefaultModel  string   `json:"DefaultModel"`
-	Env           []string `json:"env"`
+	OpenAIAPIKey         string   `json:"APIKey"`
+	OpenAIBaseURL        string   `json:"BaseURL"`
+	DefaultModel         string   `json:"DefaultModel"`
+	DefaultModelProvider string   `json:"DefaultModelProvider"`
+	Env                  []string `json:"env"`
 }
 
 func (g GlobalOptions) toEnv() []string {
@@ -20,6 +21,9 @@ func (g GlobalOptions) toEnv() []string {
 	if g.DefaultModel != "" {
 		args = append(args, "GPTSCRIPT_SDKSERVER_DEFAULT_MODEL="+g.DefaultModel)
 	}
+	if g.DefaultModelProvider != "" {
+		args = append(args, "GPTSCRIPT_SDKSERVER_DEFAULT_MODEL_PROVIDER="+g.DefaultModelProvider)
+	}
 
 	return args
 }