https://arstechnica.com/ai/2025/11/anthropic-introduces-opus-4-5-cuts-api-pricing-and-enables-much-longer-claude-chats/
Anthropic introduces cheaper, more powerful, more efficient Opus 4.5 model - Ars Technica
anthropic introducescheaper
https://arstechnica.com/information-technology/2024/06/anthropics-latest-best-ai-model-is-twice-as-fast-and-still-terrible-at-dad-jokes/
Anthropic introduces Claude 3.5 Sonnet, matching GPT-4o on benchmarks - Ars Technica
anthropic introducesclaudegpt