B.AI API Platform has officially launched support for Claude Opus 5, adding a model with a context window of up to 1 million tokens and a maximum single-output limit of 128,000 tokens. According to the announcement cited by ChainCatcher, the model is aimed at workloads that require heavy reasoning, long-form code engineering, large-scale document analysis, and knowledge-intensive workflows. The company said these use cases can benefit from a notable performance gain under the new model.
Alongside the launch, B.AI opened a dual-channel API access structure. In addition to its standard official interface, the platform has introduced a "designated service provider" partner channel. B.AI said enterprise users choosing that route can receive cost savings of up to 40%, giving them another option to balance performance requirements against budget constraints based on actual business load. Developers can access the model through B.AI’s official platform starting immediately.
B.AI API Platform has officially launched Claude Opus 5, according to a ChainCatcher report.
The model comes with a context window of up to 1 million tokens and a maximum single-output limit of 128,000 tokens. B.AI said Claude Opus 5 delivers a notable performance increase in complex reasoning, long code engineering projects, large-scale document analysis, and knowledge-intensive workflows.
B.AI opens two API access channels
At the same time, B.AI introduced a dual-channel API access plan to serve different deployment needs. Alongside the standard official interface, the platform has added a partner route described as a designated service provider channel.
B.AI said enterprise users that choose this model can receive cost savings of up to 40%, allowing them to adjust performance and budget spending more flexibly based on actual workload demands.
Developers can log in to B.AI’s official platform starting now to access and test Claude Opus 5.
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