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# OpenAI cuts GPT-6 Sol and Luna API prices while pushing agent economics
- URL: https://www.ai-360.online/openai-cuts-gpt-6-sol-and-luna-api-prices-while-pushing-agent-economics/
- Published: 2026-09-25T08:38:38.000Z
- Updated: 2026-10-31T21:50:27.000Z
- Description: OpenAI's GPT-6 Sol and Luna cut API prices by half against GPT-5.6 promotional rates, with Sol at $2 and $10 per million input and output tokens.
- Author: AI-360
- Tags: 1. Enterprise AI, News, OpenAI, Enterprise AI

[OpenAI](https://openai.com/?ref=ai-360.online) has launched GPT-6 Sol and GPT-6 Luna, lower-cost members of its GPT-6 family that it trained with similar methods to its flagship GPT-6 Astra, [the company said on 22 September 2026](https://openai.com/index/introducing-gpt-6-sol-and-luna/?ref=ai-360.online).

API prices are $2 per million input tokens and $10 per million output tokens for Sol, and $0.10 and $0.50 for Luna, which [OpenAI](https://www.ai-360.online/openai/) said is 50% cheaper than GPT-5.6 promotional pricing. It also said improved prompt caching delivers higher cache hit rates by default, with discounts of 90% on cached input.

OpenAI claimed that on AutomationBench, a test of business workflows across apps, Sol at xhigh effort outperforms Claude Opus 5 at max effort at 9% of the cost per task. These are vendor-reported results.

Both models are available in ChatGPT Work and Codex for Plus, Pro, Business, Enterprise and Edu users, and in the API as gpt-6-sol and gpt-6-luna. Free and Go users can access Luna in the desktop app. OpenAI said Astra remains its best model.

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