Longer sessions meet faster, cheaper outputs as Opus 5.5 reduces token use and speeds up professional workflows.

This article pulls together every verifiable number and detail from Anthropic's announcement, the platform documentation, the system card, and independent coverage, so you have one place to check the facts.

When you hear about a new AI model, this is usually what you imagine."Did it get smarter again?""And, it's probably expensive, right?"However, the Claude Opus 5.5 announced by Anthropic on September 22,

Anthropic has released Opus 5.5, its "safest" AI model, offering faster performance and a 40% cost reduction. The model includes enhanced safety features and outperforms previous versions in benchmarks. Cheaper versions are expected soon, with a focus on aligning AI advancements with risk prev...

OpenAI has introduced GPT-6 Sol and GPT-6 Luna as lower-cost additions to its latest model family. The new models are available through ChatGPT Work, Codex and the API, with Luna also accessible to Free and Go users through the desktop app. Their API pricing is 50 percent lower than the promotional rates of their GPT-5.6 counterparts. OpenAI says Sol and Luna improve results across professional tasks, coding and computer use, while also reducing...

Sol and Luna, Claude Opus 5.5. While following the announcements of these new models, I felt excited, but at the same time, I was thinking about something else.Which one will be the strongest next? Of course,