# Models & model IDs (/docs/concepts/models)

Where to find model IDs and prices, and how to pass them in requests.



Every request names a model in its `model` field. Use the exact ID shown in the catalog.

## Finding models [#finding-models]

* **Browse:** the [model catalog](/models) lists every model with its provider, input and output price per million tokens, and the endpoints it supports.
* **Programmatically:** call [List models](/docs/api/list-models) with your key.

```bash
curl https://api.cheapaimodel.ai/v1/models \
  -H "Authorization: Bearer $CHEAPAIMODEL_API_KEY"
```

## Which endpoint for which model [#which-endpoint-for-which-model]

Chat models are called through `/v1/chat/completions`, `/v1/responses` or `/v1/messages`, depending on what the model supports. Embedding models are only available through `/v1/embeddings`. The catalog shows the supported endpoints for each model; a model is supported only on the endpoints it lists.

Examples in these docs use [`deepseek-v4-1-flash`](/models/deepseek-v4-1-flash) and [`glm-5.3`](/models/glm-5.3) for illustration. Always check the catalog for the current list.

## Sampling limits [#sampling-limits]

Some models accept only fixed values for their sampling parameters and reject any other value with `400`:

| Model                        | `temperature` | `top_p` |
| ---------------------------- | ------------- | ------- |
| [`kimi-k3`](/models/kimi-k3) | `1` or `0.6`  | `0.95`  |

The safest choice is to leave both parameters out, so the model uses its own defaults. If your tool always sends them, set exactly these values. Moonshot's [model overview](https://platform.kimi.ai/docs/api/models-overview) fixes kimi-k3 at temperature `1.0` and top\_p `0.95`; `0.6` also passes through our gateway.

kimi-k3 also accepts only `n` = `1`, and `presence_penalty` and `frequency_penalty` only at `0`.

### Tools that send them by default [#sampling-tools]

These tools send a temperature or top\_p even when you don't set one, so their defaults fail on kimi-k3:

| Tool                                  | What it sends                                                          | What to set                                                                            |
| ------------------------------------- | ---------------------------------------------------------------------- | -------------------------------------------------------------------------------------- |
| Fabric                                | `temperature` 0.7, `top_p` 0.9                                         | Add `--raw` to send no sampling options, or pass `-t 1 -T 0.95`.                       |
| RAGFlow                               | The temperature and top\_p of its parameter presets and agent defaults | In the model's parameters, set Temperature to 1 and Top P to 0.95, or switch both off. |
| [LlamaIndex](/docs/guides/llamaindex) | `temperature` 0.1                                                      | Pass `temperature=1.0` to `OpenAILike`.                                                |

For any other tool, look for its temperature and top\_p settings and either clear them or set the values above.