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mpt-guide

Build with MosaicML's MPT models — open models with long-context training and commercial-friendly licensing.

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## Overview

MPT (MosaicML Pretrained Transformer, now part of Databricks) is an open-model
family notable for long-context training (models trained on long sequences
from the start, not extended after the fact) and commercially-friendly
licensing. MPT-7B and MPT-30B were significant open releases demonstrating
that efficient architectures (ALiBi positional encoding, no length limits by
design) could deliver strong performance with practical deployment
characteristics.

For builders, MPT's historical significance is the long-context-by-design
approach and the commercial-use licensing at a time when that wasn't universal.
In current evaluations, MPT competes as a solid open option — include it in
benchmarks, particularly if long-context handling matters, but evaluate