📢 Claude Sonnet 4.5 Model Migration and Deprecation Notice According to Anthropic's official deprecation schedule, Claude Sonnet 4.5 will be discontinued on November 30, 2026. http://B.AI will retire the model accordingly. We recommend migrating to the officially recommended replacement, Claude Sonnet 5.5, in advance. ⚠️ Please complete your model migration in advance: 🔸 API / Agent Developers: Please update your model ID, review the replacement model's pricing and parameters, and test prompt compatibility, output formats, and workflows in advance to avoid service disruptions. 🔸 Web Chat Users: We recommend verifying and saving any important conversation history in advance. 💬 Thank you for your understanding and support! For assistance, please contact the http://B.AI community team: https://t.me/BAI_agi 🔗 Model pricing details: https://docs.b.ai/llmservice/pricing-and-usage/