# GPT-5.5 Pro

> GPT-5.5 Pro on Clonvo: 1.05M context, $30.00 input and $180.00 output per 1M tokens.

Version of GPT-5.5 that uses more compute for smarter and more precise responses.

-   Model id: `openai/gpt-5.5-pro`
-   Provider: OpenAI
-   Released: Apr 23, 2026
-   Context: 1.05M tokens
-   Max output: 128K tokens

## Pricing

The provider’s list price in USD. Requests on credits are charged exactly this; each response reports its cost in usage.cost.

| Charge | Price | Unit |
| --- | --- | --- |
| Input (prompt) | $30.00 | per 1M tokens |
| Output (completion) | $180.00 | per 1M tokens |
| Web search | $0.01 | per search |

### Prices by prompt length

The tier is chosen by the number of prompt tokens in the request. USD per 1M tokens.

| Charge | Up to 272K | Over 272K |
| --- | --- | --- |
| Input (prompt) | $30.00 | $60.00 |
| Output (completion) | $180.00 | $270.00 |

## Capabilities

-   Tools
-   Vision
-   Reasoning
-   Web search

### Reasoning efforts

Values accepted for `reasoning_effort` or `reasoning.effort`:

-   `medium`
-   `high`
-   `xhigh`

## Quick start

Use the OpenAI SDK with Clonvo’s base URL and this model id.

```python
import os
from openai import OpenAI

client = OpenAI(
    base_url="https://api.clonvo.com/v1",
    api_key=os.environ["CLONVO_API_KEY"],
)

completion = client.chat.completions.create(
    model="openai/gpt-5.5-pro",
    messages=[{"role": "user", "content": "Summarise the plot of Hamlet in one sentence."}],
)
print(completion.choices[0].message.content)
```

## Data policy

Requests to this model are sent to OpenAI, whose API terms govern how they handle your data: [OpenAI data policy](https://openai.com/enterprise-privacy/). Clonvo doesn’t store prompts or responses unless your organization turns on retention.

## Bring your own key

From Pay as you go up, a OpenAI key added under Provider keys is used for this model before your credits: $25,000 a month free, then 4% of list price. [How bring-your-own-key works](https://clonvo.com/docs/byok.md).