Baseten Adds DeepSeek-V4.1-Flash to Model APIs with 1M-Token Context Window

Baseten has added DeepSeek-V4.1-Flash to its model API offerings, providing developers access to the model with a 1-million-token context window through a managed inference endpoint. The 1M-token context is the headline capability here — it enables use cases like full-codebase analysis, extremely long document processing, and extended multi-turn agent sessions that smaller context windows cannot accommodate. For developers who want DeepSeek-V4.1-Flash's performance characteristics without managing their own inference infrastructure, Baseten's API provides a straightforward on-ramp. This also signals continued momentum in the deployment ecosystem around DeepSeek models, which have gained significant traction as cost-competitive alternatives to frontier model APIs. Teams building context-heavy applications should evaluate this against other long-context providers on latency and cost.