OpenAI launches GPT-6 Sol and Luna at half the API price of its previous models
The cheapest tier of frontier AI just got cheaper again, and the claim attached to it is fewer mistakes.
OpenAI released updated Sol and Luna models on Tuesday, positioning Sol for complex work including coding and Luna for high-volume clerical tasks such as summarization and information extraction. The company said the GPT-6 series costs half the price of the GPT-5.6 series for API access, crediting improvements in caching and inference, and that GPT-6 Sol makes about half as many mistakes as its predecessor. Both are rolling out in ChatGPT Work and Codex for most paid accounts and in the API, with Luna reaching the desktop app and Free and Go users. Anthropic had released Claude Opus 5.5 roughly 90 minutes earlier.
Scripture for Reflection
“but test all things. Hold fast to what is good.”
We can test the claims made for a new tool before we lean our work on it.
