> ## Documentation Index
> Fetch the complete documentation index at: https://docs.bettertoken.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# GPT-6 Sol and GPT-6 Luna are now available

> GPT-6 Sol and GPT-6 Luna are available on BetterToken as gpt-6-sol and gpt-6-luna for complex coding agents, high-volume tasks, and efficient reasoning.

Release date: September 22, 2026

OpenAI adds Sol and Luna alongside Astra in the GPT-6 family. Sol targets complex coding and agentic workflows; Luna is designed for focused tasks at high volume. OpenAI reports improvements over the GPT-5.6 generation in coding, factuality, and communication.

BetterToken now supports **GPT-6 Sol** and **GPT-6 Luna**. Select the `GPT` provider, set the Base URL to `https://bettertoken.ai/v1`, and use `gpt-6-sol` or `gpt-6-luna`. The official model name is **Sol**, not `Sora`.

Check the <a href={"https://bettertoken.ai/pricing"}>model plaza</a> for current BetterToken availability and pricing.

## Which model to choose

* **`gpt-6-sol`**: for complex coding and agentic workflows.
* **`gpt-6-luna`**: for focused, repeatable, high-volume tasks.

## Highlights

* **Large context**: OpenAI lists a `1,050,000`-token context window and up to `128,000` output tokens for both models.
* **Adjustable reasoning**: both support `none`, `low`, `medium`, `high`, `xhigh`, and `max` reasoning effort.
* **Everyday work**: OpenAI reports gains over GPT-5.6 in coding, factual accuracy, and clearer technical responses.

## Connect them

1. <a href={"https://bettertoken.ai/register"}>Create a BetterToken API Key</a>.
2. Select `GPT` and use `https://bettertoken.ai/v1` as the Base URL.
3. Use `gpt-6-sol` for demanding agent workflows or `gpt-6-luna` for repeatable high-volume tasks.
4. Run a representative request and compare quality, latency, and token usage.

Use the [Codex CLI setup guide](/en/ai-tools/codex) or the [model selection guide](/en/faq/model-calling/model-selection-guide).

## Official sources

* [GPT-6 Sol and GPT-6 Luna announcement](https://openai.com/index/introducing-gpt-6-sol-and-luna/)
* [GPT-6 Sol API reference](https://developers.openai.com/api/docs/models/gpt-6-sol)
* [GPT-6 Luna API reference](https://developers.openai.com/api/docs/models/gpt-6-luna)