What was going on
A user running the usage examples in the ai21-python SDK kept getting errors because the example code used a model id that no longer resolves. The example passed jamba-1.6-mini-2025-03. Changing it to jamba-mini-1.6-2025-03 made the examples work. The naming order matters: jamba-mini-1.6, not jamba-1.6-mini.
What fixed it
The examples used a stale model id. Use jamba-mini-1.6-2025-03 instead of jamba-1.6-mini-2025-03. The reporter confirmed the examples ran after the swap. Note model ids get retired over time, so if this one stops working too, check AI21's current model list. Source: https://github.com/AI21Labs/ai21-python/issues/279