# GPT-6.1 Terra

Canonical: https://freepi.ai/models/gpt-6.1-terra

Use GPT-6.1 Terra free in free-pi: run `npx free-pi-cli@latest`, then `/model gpt-6.1-terra`.

Usage in free-pi: premium, uses allowance fast · \~20x usage

## Stats

- Maker: OpenAI
- Intelligence index: 51
- Context window: 1,050,000 tokens
- Max output: 128,000 tokens
- Inputs: Text, image, file
- Tool calling: Yes
- Reasoning effort: Yes
- Structured output: Yes
- Released: Oct 26, 2026

Stats refreshed automatically.

## About GPT-6.1 Terra

GPT-6.1 Terra is a model from OpenAI in the GPT-6.1 series, priced below [GPT-6.1 Sol](https://freepi.ai/models/gpt-6.1-sol). The context window is 1,050,000 tokens. It supports reasoning with an effort setting, tool calling, and structured outputs. With tool calling, the free-pi agent can read and edit files, run commands, and use free-pi's built-in web search and documentation lookup tools.

In free-pi it is free to use with no API key and no card, but it is a premium model. Its usage rate is shown above.

## When to pick it

For harder coding tasks where you want more capability than the default, pick GPT-6.1 Terra. For the same model at a lower allowance cost when you can wait longer for replies, pick [GPT-6.1 Terra Flex](https://freepi.ai/models/gpt-6.1-terra-flex). For the longest-lasting allowance, use the default [DeepSeek V4 Flash](https://freepi.ai/models/deepseek-v4-flash).