# GPT-6.1 Terra API Pricing

As of October 27, 2026, GPT-6.1 Terra costs $1.00 per 1M input tokens and $5.00 per 1M output tokens on OpenAI, with cache reads at $0.05 and cache writes at $1.25 per 1M tokens. Across 4 providers on LiteLLM, the input price ranges from $1.00 to $1.10. It has a 922,000-token context window and returns up to 128,000 tokens per response.

- Page: https://models.litellm.ai/models/gpt-6.1-terra
- Lab: OpenAI
- LiteLLM model name: `gpt-6.1-terra`
- Context window: 922,000 tokens
- Max output: 128,000 tokens
- Added to LiteLLM: October 26, 2026
- Prices updated: October 26, 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-6.1-terra` | $1.00 | $5.00 | $0.05 | – | – | 922K |
| ChatGPT Subscription | `chatgpt/gpt-6.1-terra` | – | – | – | – | – | 922K |
| GitHub Copilot | `github_copilot/gpt-6.1-terra` | $1.00 | $5.00 | $0.05 | – | – | 922K |
| Amazon Bedrock (Global cross-region) | `global.openai.gpt-6.1-terra` | $1.00 | $5.00 | $0.05 | – | – | 922K |
| Amazon Bedrock (US cross-region) | `us.openai.gpt-6.1-terra` | $1.10 | $5.50 | $0.055 | – | – | 922K |

## Cost examples

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

- OpenAI: $4.50
- GitHub Copilot: $4.50
- OpenAI batch: $2.25

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

- OpenAI: $11.00
- GitHub Copilot: $11.00

## 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-6.1-terra",
    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: $0.0035 per request, $35.00 per day, $1,050 per month (30 days). Try other numbers at https://models.litellm.ai/calculator?model=gpt-6.1-terra

## FAQ

### How much does GPT-6.1 Terra cost?

GPT-6.1 Terra costs $1.00 per 1M input tokens and $5.00 per 1M output tokens on OpenAI, with cache reads at $0.05 and cache writes at $1.25 per 1M tokens. Batch requests cost $0.50 per 1M input tokens and $2.50 per 1M output tokens. Above 272K input tokens, input costs $2.00 and output costs $7.50 per 1M tokens. Across 4 providers on LiteLLM, the input price ranges from $1.00 to $1.10.

### What is the context window of GPT-6.1 Terra?

GPT-6.1 Terra has a 922,000-token context window and returns up to 128,000 tokens per response.

### Which providers offer GPT-6.1 Terra?

GPT-6.1 Terra is available from 4 providers through LiteLLM: OpenAI, ChatGPT Subscription, GitHub Copilot and Amazon Bedrock. The lowest price is on OpenAI.

### How do I call GPT-6.1 Terra with an OpenAI-compatible API?

Use the LiteLLM Python SDK with model="gpt-6.1-terra", 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-6.1 Terra support?

GPT-6.1 Terra 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-6.1 Terra?

GPT-6.1 Terra was added to LiteLLM's model price file on October 26, 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.