B.AI Launches Claude Opus 5 API With 1M Context Window

B.AI deploys Claude Opus 5 API featuring 1M token context and 128k output. Dual-channel access offers up to 40% cost savings for enterprise users.

Woofun AI reports that B.AI’s API platform has officially launched the Claude Opus 5 model on July 25th. The model supports a context window of up to 1 million tokens and a maximum output limit of 128,000 tokens per response. These specifications aim to enhance performance in complex inference, long-term code development, large-scale document analysis, and knowledge-intensive workflows. To address diverse deployment requirements, the platform now offers a dual-channel API access solution. Alongside the standard official interface, a "designated service provider" partnership channel has been introduced. Enterprise users can achieve cost savings of up to 40% through this option, enabling flexible balancing of performance and budget based on actual business workload. Developers can access Claude Opus 5 via B.AI’s official platform starting today.