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

# Limitations & controls

> Understanding model limitations, safety features, and token limits.

## Safety Features

**Q: Can safety filters or content restrictions be disabled on text generation models?**

No, safety features and content restrictions for text generation models (such as Llama, Mistral, etc.) are embedded by the original model creators during training:

* **Safety measures** are integrated directly into the models by the teams that trained and released them.
* These are **core behaviors** of the model, not external filters.
* Different models may have varying levels of built-in safety.
* **Fireworks.ai does not add additional censorship layers** beyond what is inherent in the models.
* Original model behaviors **cannot be modified** via API parameters or configuration.

*Note*: For specific content handling needs, review the documentation of each model to understand its inherent safety features.

## Token Limits

**Q: What are the maximum completion token limits for models, and can they be increased?**

* For most models, the max completion token limit is the full context window of the model, e.g. 128K for DeepSeek R1
* `max_tokens` is set at 2K by default, and you should set it to a higher value if you plan to have long generations.
* For **Llama 3.1 405B**, have a **4096 token completion limit**. Setting a higher `max_tokens` in API calls **will not override** this limit.
* You will see `"finish_reason": "length"` in responses when hitting a max token limit.

**Example API Response at Limit**:

```json theme={null}
{
    "finish_reason": "length",
    "usage": {
        "completion_tokens": 4096,
        "prompt_tokens": 4206,
        "total_tokens": 8302
    }
}
```

***

## Additional information

If you experience any issues during these processes, you can:

* Contact support through Discord at [discord.gg/fireworks-ai](https://discord.gg/fireworks-ai)
* Reach out to your account representative (Enterprise customers)
* Email [inquiries@fireworks.ai](mailto:inquiries@fireworks.ai)