> For the complete documentation index, see [llms.txt](https://knowledge.i10x.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://knowledge.i10x.ai/chat-and-research/chat-arena.md).

# Chat Arena

Every AI model has different strengths. GPT-5 might write a better structure. Claude might nail the tone. Gemini might find better sources. Chat Arena lets you test them all at once - with a single prompt.

{% hint style="info" %}
💡 Chat Arena is perfect when the quality of your output really matters - like a client proposal, an important email, or a critical piece of research.
{% endhint %}

### When Should You Use Chat Arena?

Use Chat Arena when you want the best possible answer and don't want to rely on a single model's perspective.

| Situation                   | Why Chat Arena Helps                                        |
| --------------------------- | ----------------------------------------------------------- |
| Writing an important email  | Compare tone and structure across models                    |
| Researching a complex topic | See which model gives the most accurate and complete answer |
| Generating creative content | Get multiple creative variations in one shot                |
| Debugging code              | Let multiple models attempt the fix simultaneously          |
| Making a business decision  | Get different analytical perspectives at once               |

### How to Use Chat Arena

1. Click "Chat Arena" in the left sidebar under Chat & Research.
2. Select 2 or more models from the model selector at the top.
3. Type your prompt once in the input bar at the bottom.
4. Hit Send — your prompt is sent to all selected models simultaneously.
5. Review the responses side by side.
6. Copy the best response or combine the strongest elements from each.

{% hint style="info" %}
💡 Pro Tip: Try running the same prompt through Claude 4.6 Sonnet and GPT-5 when writing proposals or reports. Claude tends to excel at tone and flow, while GPT-5 tends to excel at structure and detail. Combine both for the strongest result.
{% endhint %}

### Chat vs. Chat Arena - Which Should I Use?

|              | Chat                                     | Chat Arena                                |
| ------------ | ---------------------------------------- | ----------------------------------------- |
| **Best For** | Quick tasks, back-and-forth conversation | High-stakes outputs where quality matters |
| **Models**   | One model at a time                      | Multiple models simultaneously            |
| **Output**   | Single response                          | Multiple responses to compare             |
| **Speed**    | Fastest                                  | Slightly slower (running multiple models) |
| **Use When** | You need a quick answer                  | You need the best possible answer         |

{% hint style="info" %}
✅ Try This Now:

1. Open Chat Arena.
2. Select Claude 4.6 Sonnet and GPT-5.
3. Type: "Write a 3-sentence intro for a proposal about improving team productivity using AI."
4. Compare both responses and pick your favourite.
   {% endhint %}