September 23, 2026Key points of this article✅ Anthropic announced Claude Opus 5.5 on September 22, 2026, and cut prices by up ...

OpenAI is widening access to its latest AI capabilities with two lower-cost models, targeting professionals, developers and businesses that need stronger performance without higher computing costs.

You'd be forgiven for thinking OpenAI was watching the clock. Just 90 minutes after Anthropic rolled out an upgraded Opus 5.5 ...

Sol' and 'GPT-6 Luna.' Following the launch of its flagship model, 'GPT-6 Astra,' earlier this month, these models refresh the mid-tier and lightweight offerings with a focus on cost-efficiency. Both ...

OpenAI launches GPT-6 Sol and Luna with 50% lower API prices, putting cost, caching and agent economics at the center of the ...

Astra was released at the start of the month as OpenAI’s most powerful model to date. A few days later, Sol and Luna joined ...

OpenAI has announced new GPT-6 Sol and Luna models that are faster, more accurate, and 50% cheaper to use than GPT-5.6 Sol and Luna models.

OpenAI's GPT-6 Sol and Luna cut API prices 50% and beat Claude Opus 5 on AutomationBench at about 9% of its cost per task ...

OpenAI has released two new models for different needs. ChatGPT-maker OpenAI has now introduced GPT-6 Sol and GPT-6 Luna ...

OpenAI has expanded its GPT-6 lineup with two new models, Sol and Luna, offering lower-cost alternatives to its flagship ...

OpenAI has expanded its GPT-6 family with new Sol and Luna models, offering Astra-level capabilities at lower costs. Here’s ...

Anthropic’s Claude Opus 5.5 and OpenAI’s GPT-6 Sol & Luna have launched, leveraging their most powerful model at a lower ...