> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ai-stats.phaseo.app/llms.txt
> Use this file to discover all available pages before exploring further.

# Responses

> Call the Responses API with the C# SDK.

**Method**: `client.GenerateResponse(...)` or `client.CreateResponse(...)`

### Example

```csharp theme={null}
using AiStatsSdk;

var client = new AIStats(apiKey);
var response = await client.GenerateResponse(new Dictionary<string, object>
{
    ["model"] = "openai/gpt-5-nano",
    ["input"] = "Summarise this text",
    ["temperature"] = 0.7
});
```

### Key parameters

* `model` (required): Target model id.
* `input` (required): Ordered array of input items (messages, tool calls, etc.).
* `temperature` (0–2): Higher = more random.
* `top_p` (0–1) / `top_k` (>=1): Nucleus / k-best sampling controls.
* `max_output_tokens` (int): Hard cap on tokens generated per response; `max_output_tokens_per_message` to cap each message item.
* Tools: `tools` (definitions), `tool_choice` (auto/none/specific), `max_tool_calls` (int), `parallel_tool_calls` (bool).
* Logprobs: `logprobs` (bool), `top_logprobs` (0–20) to return per-token logprobs.
* Output: `response_format` (json/text), `service_tier`, `store` (bool), `stream` (bool).
* Metadata: `metadata` (object) for passthrough, `reasoning` (object) for effort hints.
* Gateway extras: `usage` (bool to request usage), `meta` (bool to include meta block).

### Returns

`ResponsesResponse`