copilot_chat: Rename o1-preview model to o1 (#23038)

https://github.blog/news-insights/openais-o1-model-available-in-copilot-chat-and-github-models/

Release Notes:

- Renamed Github Copilot Chat "o1-preview" model to "o1".

---------

Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>

crates/copilot/src/copilot_chat.rs

@@ -34,8 +34,8 @@ pub enum Model {
     Gpt4,
     #[serde(alias = "gpt-3.5-turbo", rename = "gpt-3.5-turbo")]
     Gpt3_5Turbo,
-    #[serde(alias = "o1-preview", rename = "o1")]
-    O1Preview,
+    #[serde(alias = "o1", rename = "o1")]
+    O1,
     #[serde(alias = "o1-mini", rename = "o1-mini")]
     O1Mini,
     #[serde(alias = "claude-3-5-sonnet", rename = "claude-3.5-sonnet")]
@@ -46,7 +46,7 @@ impl Model {
     pub fn uses_streaming(&self) -> bool {
         match self {
             Self::Gpt4o | Self::Gpt4 | Self::Gpt3_5Turbo | Self::Claude3_5Sonnet => true,
-            Self::O1Mini | Self::O1Preview => false,
+            Self::O1Mini | Self::O1 => false,
         }
     }
 
@@ -55,7 +55,7 @@ impl Model {
             "gpt-4o" => Ok(Self::Gpt4o),
             "gpt-4" => Ok(Self::Gpt4),
             "gpt-3.5-turbo" => Ok(Self::Gpt3_5Turbo),
-            "o1-preview" => Ok(Self::O1Preview),
+            "o1" => Ok(Self::O1),
             "o1-mini" => Ok(Self::O1Mini),
             "claude-3-5-sonnet" => Ok(Self::Claude3_5Sonnet),
             _ => Err(anyhow!("Invalid model id: {}", id)),
@@ -68,7 +68,7 @@ impl Model {
             Self::Gpt4 => "gpt-4",
             Self::Gpt4o => "gpt-4o",
             Self::O1Mini => "o1-mini",
-            Self::O1Preview => "o1-preview",
+            Self::O1 => "o1",
             Self::Claude3_5Sonnet => "claude-3-5-sonnet",
         }
     }
@@ -79,7 +79,7 @@ impl Model {
             Self::Gpt4 => "GPT-4",
             Self::Gpt4o => "GPT-4o",
             Self::O1Mini => "o1-mini",
-            Self::O1Preview => "o1-preview",
+            Self::O1 => "o1",
             Self::Claude3_5Sonnet => "Claude 3.5 Sonnet",
         }
     }
@@ -90,7 +90,7 @@ impl Model {
             Self::Gpt4 => 32768,
             Self::Gpt3_5Turbo => 12288,
             Self::O1Mini => 20000,
-            Self::O1Preview => 20000,
+            Self::O1 => 20000,
             Self::Claude3_5Sonnet => 200_000,
         }
     }

crates/language_models/src/provider/copilot_chat.rs

@@ -179,7 +179,7 @@ impl LanguageModel for CopilotChatLanguageModel {
                     CopilotChatModel::Gpt4o => open_ai::Model::FourOmni,
                     CopilotChatModel::Gpt4 => open_ai::Model::Four,
                     CopilotChatModel::Gpt3_5Turbo => open_ai::Model::ThreePointFiveTurbo,
-                    CopilotChatModel::O1Preview | CopilotChatModel::O1Mini => open_ai::Model::Four,
+                    CopilotChatModel::O1 | CopilotChatModel::O1Mini => open_ai::Model::Four,
                     CopilotChatModel::Claude3_5Sonnet => unreachable!(),
                 };
                 count_open_ai_tokens(request, model, cx)