# GPT-6 Rosalind API Pricing

As of October 31, 2026, GPT-6 Rosalind costs $15.00 per 1M input tokens and $75.00 per 1M output tokens on OpenAI, with cache reads at $1.50 and cache writes at $18.75 per 1M tokens. It has a 922,000-token context window and returns up to 128,000 tokens per response.

- Page: https://models.litellm.ai/models/gpt-6-rosalind
- Lab: OpenAI
- LiteLLM model name: `gpt-6-rosalind`
- Context window: 922,000 tokens
- Max output: 128,000 tokens
- Added to LiteLLM: October 30, 2026
- Prices updated: October 30, 2026

## Pricing by provider

Token prices in USD per 1M tokens.

| Provider | Model name | Input | Output | Cache read | Per image | Per second | Context |
|---|---|---|---|---|---|---|---|
| OpenAI | `gpt-6-rosalind` | $15.00 | $75.00 | $1.50 | – | – | 922K |
| ChatGPT Subscription | `chatgpt/gpt-6-rosalind` | – | – | – | – | – | 922K |

## Cost examples

1,000 requests with 2,000 input and 500 output tokens each:

- OpenAI: $67.50

100 long-document requests with 100,000 input and 2,000 output tokens each:

- OpenAI: $165.00

## Features

Supported: Function calling, Parallel tool calls, Structured output, Image input, PDF input, Reasoning, Prompt caching, Web search, Computer use.

## Use it with LiteLLM

```python
from litellm import completion

response = completion(
    model="gpt-6-rosalind",
    messages=[{"role": "user", "content": "Hello!"}],
)
```

## Cost calculator

10,000 requests a day with 1,000 input and 500 output tokens each, at OpenAI's price: $0.0525 per request, $525 per day, $15,750 per month (30 days). Try other numbers at https://models.litellm.ai/calculator?model=gpt-6-rosalind

## FAQ

### How much does GPT-6 Rosalind cost?

GPT-6 Rosalind costs $15.00 per 1M input tokens and $75.00 per 1M output tokens on OpenAI, with cache reads at $1.50 and cache writes at $18.75 per 1M tokens. Above 272K input tokens, input costs $30.00 and output costs $112.50 per 1M tokens.

### What is the context window of GPT-6 Rosalind?

GPT-6 Rosalind has a 922,000-token context window and returns up to 128,000 tokens per response.

### Which providers offer GPT-6 Rosalind?

GPT-6 Rosalind is available from 2 providers through LiteLLM: OpenAI and ChatGPT Subscription.

### How do I call GPT-6 Rosalind with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="gpt-6-rosalind", or add the model to the LiteLLM proxy's config.yaml and send requests to /v1/chat/completions from any OpenAI client. LiteLLM tracks the cost of every request at the prices on this page.

### What features does GPT-6 Rosalind support?

GPT-6 Rosalind supports function calling, parallel tool calls, structured output, image input, PDF input, reasoning, prompt caching, web search and computer use.

### When did LiteLLM add GPT-6 Rosalind?

GPT-6 Rosalind was added to LiteLLM's model price file on October 30, 2026.

Source: LiteLLM model price file, https://github.com/BerriAI/litellm/blob/main/model_prices_and_context_window.json. Maintainers update it from each provider's published pricing, and this page is usually rebuilt within 20 minutes of every change.