feat(api): add enum to model param for message (#315)

also removes claude-3 from text completions enum

Author: stainless-bot

src/resources/completions.ts

@@ -94,7 +94,7 @@ export interface CompletionCreateParamsBase {
    * See [models](https://docs.anthropic.com/claude/docs/models-overview) for
    * additional details and options.
    */
-  model: (string & {}) | 'claude-3-opus-20240229' | 'claude-2.1' | 'claude-instant-1';
+  model: (string & {}) | 'claude-2.0' | 'claude-2.1' | 'claude-instant-1.2';
 
   /**
    * The prompt that you want Claude to complete.

src/resources/messages.ts

@@ -390,7 +390,13 @@ export interface MessageCreateParamsBase {
    * See [models](https://docs.anthropic.com/claude/docs/models-overview) for
    * additional details and options.
    */
-  model: string;
+  model:
+    | (string & {})
+    | 'claude-3-opus-20240229'
+    | 'claude-3-sonnet-20240229'
+    | "claude-2.1'"
+    | 'claude-2.0'
+    | 'claude-instant-1.2';
 
   /**
    * An object describing metadata about the request.
@@ -610,7 +616,13 @@ export interface MessageStreamParams {
    * See [models](https://docs.anthropic.com/claude/docs/models-overview) for
    * additional details and options.
    */
-  model: string;
+  model:
+    | (string & {})
+    | 'claude-3-opus-20240229'
+    | 'claude-3-sonnet-20240229'
+    | "claude-2.1'"
+    | 'claude-2.0'
+    | 'claude-instant-1.2';
 
   /**
    * An object describing metadata about the request.