# GitHub — OpenAI’s GPT-6 Sol and GPT-6 Luna now available

- Company: GitHub (github.com)
- Announced: 2026-09-22T17:00:14+00:00
- Category: capability-change
- Coverage: 4 outlets
- Announcement: yes
- Group: covered
- Source: https://github.blog/changelog/2026-09-22-openais-gpt-6-sol-and-gpt-6-luna-now-available
- Record: https://forck.live/items/13113-openai-s-gpt-6-sol-and-gpt-6-luna-now-available
- Subject: Copilot
- Models affected: GPT-6 Sol, GPT-6 Luna
- Pricing: billed under usage-based billing

OpenAI's GPT-6 Sol and GPT-6 Luna models are now available in GitHub Copilot alongside the previously released GPT-6 Astra. GPT-6 Sol is a balanced model for interactive and agentic coding available to Copilot Pro+, Max, Business, and Enterprise plans. GPT-6 Luna is a lightweight, cost-efficient model for smaller tasks available to Copilot Pro, Pro+, Max, Business, and Enterprise plans. Both models can be selected through the model picker across multiple IDEs and platforms.

## Evidence

Verbatim from https://github.blog/changelog/2026-09-22-openais-gpt-6-sol-and-gpt-6-luna-now-available:

> OpenAI's GPT-6 family is expanding in GitHub Copilot with two additional models: GPT-6 Sol, and GPT-6 Luna. Joining the previously released GPT-6 Astra, these new options let you select the model that best fits your task, whether that's everyday agentic coding or fast, cost-efficient assistance.

## Around this story

Outlets this record can name and link:

- Reuters: https://reuters.com/technology/openai-expands-gpt-6-lineup-with-cheaper-sol-luna-models-2026-09-22
- The New Stack — OpenAI releases GPT-6 Sol and Luna — and cuts token prices in half: https://thenewstack.io/openai-gpt-6-sol-luna-release
- Business Today — OpenAI expands GPT 6 lineup with Sol and Luna models, bringing cheaper, more efficient AI: https://businesstoday.in/technology/artificial-intelligence/story/openai-expands-gpt-6-lineup-with-sol-and-luna-models-bringing-cheaper-more-efficient-ai-557281-2026-09-23
- Ghacks: https://ghacks.net/2026/09/23/openai-launches-gpt-6-sol-and-luna-with-50-lower-api-pricing-than-gpt-5-6

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