Claude Haiku 5.5 officially launches on B.AI, with API and Web Chat simultaneously available on both platforms.

On October 8, the B.AI platform announced that Anthropic's latest Haiku model, Claude Haiku 5.5, has officially launched, with API and Web Chat access simultaneously available. Designed for high-frequency invocations and latency-sensitive workloads, the model achieves an optimal balance between speed, cost, and intelligence, making it ideal for clearly bounded sub-Agent tasks. Adaptive thinking is enabled by default, offering five tiers of reasoning intensity. It supports image understanding and tool calling, handles ultra-long contexts up to 1M tokens, and allows outputs up to 128K tokens. Suitable applications include classification, routing, information extraction, summarization, real-time customer service, code-assisted retrieval, and interface automation. Starting today, developers and users can directly invoke Claude Haiku 5.5 via the B.AI platform. Visit chat.b.ai/chat to experience it immediately.