copilot: Add support for tool_calls for gpt-4.1, gpt-4o, o4-mini (#29369)

Umesh Yadav created 7 months ago

Github Copilot currently supports following models for agent mode with
tool calls. Currently we are only supporting anthropic models and not
openai and gemini. This PR add support for the openai models. I have
tested it and it works for all of them. For gemini models it seems there
is a issues from copilot side so not adding that in this PR as enabling
gemini model breaks it in the ask mode as well.

<img width="392" alt="image"
src="https://github.com/user-attachments/assets/fb7a4148-e48c-45c5-9ff9-c02f71217dfb"
/>


- [x] GPT-4.1

- [x] GPT-4.0

- [x] o4-mini

Release Notes:

- agent: Add tool calling support for gpt-4.1, gpt-4o, o4-mini when
using Copilot Chat as a provider

Signed-off-by: Umesh Yadav <umesh4257@gmail.com>

Change summary

crates/language_models/src/provider/copilot_chat.rs | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

Detailed changes

crates/language_models/src/provider/copilot_chat.rs 🔗

@@ -188,7 +188,10 @@ impl LanguageModel for CopilotChatLanguageModel {
 
     fn supports_tools(&self) -> bool {
         match self.model {
-            CopilotChatModel::Claude3_5Sonnet
+            CopilotChatModel::Gpt4o
+            | CopilotChatModel::Gpt4_1
+            | CopilotChatModel::O4Mini
+            | CopilotChatModel::Claude3_5Sonnet
             | CopilotChatModel::Claude3_7Sonnet
             | CopilotChatModel::Claude3_7SonnetThinking => true,
             _ => false,