Add support for o1-preview and o1-mini models (#9)

Adding support for [⁠the new o1-preview and o1-mini models](https://openai.com/index/introducing-openai-o1-preview/).

Note that these two no longer support the name we translate our `MaxNumTokens` into. Fortunately, the new name does get accepted in the older models, too.

```
================================================================================
Error occurred in topenAIChat/canUseModel(ModelName=o1-preview) and it did not run to completion.
    ---------
    Error ID:
    ---------
    'llms:apiReturnedError'
    --------------
    Error Details:
    --------------
    Error using openAIChat/generate (line 259)
    Server returned error indicating: "Unsupported parameter: 'max_tokens' is not supported with this model. Use
    'max_completion_tokens' instead."

    Error in topenAIChat/canUseModel (line 100)
                testCase.verifyClass(generate(openAIChat(ModelName=ModelName),"hi",MaxNumTokens=1),"string");
================================================================================
```

Author: ccreutzi

+llms/+internal/callOpenAIChatAPI.m

@@ -135,11 +135,11 @@
 end
 
 if isempty(nvp.StopSequences)
-    parameters = rmfield(parameters,"stop");
+    parameters = rmfield(parameters,dict("StopSequences"));
 end
 
 if nvp.MaxNumTokens == Inf
-    parameters = rmfield(parameters,"max_tokens");
+    parameters = rmfield(parameters,dict("MaxNumTokens"));
 end
 
 end
@@ -150,7 +150,7 @@
 dict("TopP") = "top_p";
 dict("NumCompletions") = "n";
 dict("StopSequences") = "stop";
-dict("MaxNumTokens") = "max_tokens";
+dict("MaxNumTokens") = "max_completion_tokens";
 dict("PresencePenalty") = "presence_penalty";
 dict("FrequencyPenalty ") = "frequency_penalty";
 end

+llms/+openai/models.m

@@ -9,5 +9,7 @@
         "gpt-4","gpt-4-0613", ...
         "gpt-3.5-turbo","gpt-3.5-turbo-0125", ...
         "gpt-3.5-turbo-1106",...
+        "o1-preview",...
+        "o1-mini",...
     ];
 end

doc/OpenAI.md

@@ -6,6 +6,7 @@ To start using the OpenAI APIs, you first need to obtain OpenAI API keys. You ar
 
 Some of the current LLMs supported on OpenAI are:
 - gpt-4o-mini, gpt-4o-mini-2024-07-18
+- o1-preview, o1-mini
 - gpt-3.5-turbo, gpt-3.5-turbo-1106, gpt-3.5-turbo-0125
 - gpt-4o, gpt-4o-2024-05-13 (GPT-4 Omni)
 - gpt-4-turbo, gpt-4-turbo-2024-04-09 (GPT-4 Turbo with Vision)

tests/topenAIChat.m

@@ -9,6 +9,7 @@
         InvalidGenerateInput = iGetInvalidGenerateInput();
         InvalidValuesSetters = iGetInvalidValuesSetters();
         StringInputs = struct('string',{"hi"},'char',{'hi'},'cellstr',{{'hi'}});
+        ModelName = cellstr(llms.openai.models);
     end
 
     methods(Test)
@@ -95,6 +96,13 @@ function fixedSeedFixesResult(testCase)
             testCase.verifyEqual(result1,result2);
         end
 
+        function canUseModel(testCase,ModelName)
+            testCase.verifyClass(generate(...
+                    openAIChat(ModelName=ModelName), ...
+                    "hi",MaxNumTokens=1), ...
+                "string");
+        end
+
         function invalidInputsConstructor(testCase, InvalidConstructorInput)
             testCase.verifyError(@()openAIChat(InvalidConstructorInput.Input{:}), InvalidConstructorInput.Error);
         end