chat completions

Maven

<dependency>
    <groupId>com.openai</groupId>
    <artifactId>openai-java</artifactId>
    <version>x.x.x</version>
</dependency>

Normal Request Example

Java

@Test
void clientOpenClientTest() {
    OpenAIClient client = OpenAIOkHttpClient.builder()
            .apiKey(apiKey) // Your access key
            .baseUrl("https://ai.pmock.com/api/ai/chat")
            .build();

    ChatCompletionCreateParams params = ChatCompletionCreateParams.builder()
            .model("gpt-5.2")
            .addMessage(ChatCompletionMessageParam.ofSystem(
                    ChatCompletionSystemMessageParam.builder().content("You are a helpful assistant.").build()))
            .addMessage(ChatCompletionMessageParam.ofUser(
                    ChatCompletionUserMessageParam.builder().content("Hello!").build()))
            .build();

    ChatCompletion chatCompletion = client.chat().completions().create(params);
    System.out.println(chatCompletion.choices().get(0).message().content());
}

Normal Response

{
	"id": "chatcmpl-xxx",
	"object": "chat.completion",
	"created": 1768810259,
	"model": "gpt-5.1",
	"choices": [
		{
			"index": 0,
			"message": {
				"role": "assistant",
				"content": "Hey! How's it going?"
			},
			"finish_reason": "stop"
		}
	],
	"usage": {
		"prompt_tokens": 0,
		"completion_tokens": 0,
		"total_tokens": 0,
		"prompt_tokens_details": {
			"text_tokens": 0
		},
		"completion_tokens_details": {
			"content_tokens": 0
		}
	}
}

Stream Response

Java

    @Test
void streamClientOpenClientTest() {
    OpenAIClient client = OpenAIOkHttpClient.builder()
            .apiKey(apiKey) // Your access key
            .baseUrl("https://ai.pmock.com/api/ai/chat")
            .build();

    ChatCompletionCreateParams streamParams = ChatCompletionCreateParams.builder()
            .model("gpt-5.2")
            .addMessage(ChatCompletionMessageParam.ofSystem(
                    ChatCompletionSystemMessageParam.builder().content("You are a helpful assistant.").build()))
            .addMessage(ChatCompletionMessageParam.ofUser(
                    ChatCompletionUserMessageParam.builder().content("Hello!").build()))
            .build();

    try (StreamResponse<ChatCompletionChunk> streaming = client.chat().completions().createStreaming(streamParams)) {
        streaming.stream().forEach(chunk -> {
            if (!chunk.choices().isEmpty()) {
                String content = chunk.choices().get(0).delta().content().orElse("");
                System.out.print(content);
            }
        });
    }
}

data: {"created":1768823313,"model":"gpt-5.1","id":"chatcmpl-xxx","choices":[{"delta":{"content":"?"},"index":0}],"object":"chat.completion.chunk"}
data: {"created":1768823313,"model":"gpt-5.1","id":"chatcmpl-xxx","choices":[{"delta":{},"index":0}],"object":"chat.completion.chunk"}
data: {"created":1768823313,"model":"gpt-5.1","id":"chatcmpl-xxx","choices":[{"delta":{},"finish_reason":"stop","index":0}],"object":"chat.completion.chunk"}
data: {"created":1768823316,"usage":{"completion_tokens":0,"completion_tokens_details":{},"prompt_tokens":0,"prompt_tokens_details":{},"total_tokens":0},"model":"gpt-5.1","id":"chatcmpl-xxx","choices":[{"delta":{},"index":0}],"object":"chat.completion.chunk"}
data: [DONE]

Body

application/json

messages

any[]

required

messages

Minimum array length: 1

model

enum<string>

required

model

Available options:

gpt-5.1,

gpt-5.1-all,

gpt-5.1-thinking,

gpt-5.1-thinking-all,

gpt-5.2,

gemini-3-pro,

gemini-2.5-pro,

gemini-2.5-flash,

gemini-3-flash,

claude-4.5,

gpt-5.4,

gpt-5.3,

gpt-5.3-codex

stream

boolean

default:false

streaming output

temperature

number<double>

Temperature (0-2)

maxTokens

integer<int32>

Maximum token count

maxCompletionTokens

integer<int32>

Maximum number of completed tokens

topP

number<double>

top P

frequencyPenalty

number<double>

frequency penalty(-2.0 to 2.0)

presencePenalty

number<double>

presence penalty(-2.0 to 2.0)

stop

any

Stop sequence

integer<int32>

Generated Quantity

seed

integer<int32>

random seed

user

string

user

tools

any[]

Tool List (Function Calling)

toolChoice

any

Tool selection strategy

responseFormat

any

Response format

logprobs

boolean

logprobs

topLogprobs

integer<int32>

top logprobs

logitBias

any

logit bias

parallelToolCalls

boolean

parallel tool calls

Response

200 - */*

The response is of type object.

PMOCK

AI

​Maven

​Normal Request Example

​Normal Response

​Stream Response

Body

Response

Maven

Normal Request Example

Normal Response

Stream Response