# TechCrunch — OpenAI launches GPT-6 Sol and Luna, boasting lower cost and fewer mistakes

- Company: TechCrunch (techcrunch.com)
- Announced: 2026-09-22T18:00:00+00:00
- Category: model-update
- Coverage: not counted
- Announcement: yes
- Group: models
- Source: https://techcrunch.com/2026/09/22/openai-launches-gpt-6-sol-and-luna/
- Record: https://forck.live/items/13109-openai-launches-gpt-6-sol-and-luna-boasting-lower-cost-and-fewer-mistakes
- Subject: Reporting
- Models affected: GPT-6 Sol, GPT-6 Luna
- Pricing: The 6 series models will be available at half the cost of the 5.6 series of Sol and Luna

OpenAI released updated versions of its GPT-6 Sol and Luna models, offering lower API pricing (half the cost of the 5.6 series) and improved factual accuracy, with Sol making about half as many mistakes as its predecessor. The models are available in ChatGPT Work, Codex, and the ChatGPT API for most paid accounts, with Luna also coming to the desktop app and Free/Go users.

## Evidence

Verbatim from https://techcrunch.com/2026/09/22/openai-launches-gpt-6-sol-and-luna/:

> The 6 series models will be available at half the cost of the 5.6 series of Sol and Luna, a price drop that OpenAI attributes to improvements in caching and inference.

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Record: https://forck.live/items/13109-openai-launches-gpt-6-sol-and-luna-boasting-lower-cost-and-fewer-mistakes
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