Claude API may silently route requests to different model weights than requested

Short summary

The article describes a scenario where API calls specifying a particular Claude model are silently routed to different model weights based on request classification, returning a different model identifier in the response. This raises transparency and billing concerns for developers relying on specific model behavior. The piece touches on Anthropic's potential request-routing practices without full technical detail.

• •API requests for a specific Claude model may be silently routed to different weights
• •Response object can return a different model identifier than requested
• •Raises transparency, predictability, and billing concerns for API consumers

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