Laya

Laya is a family of three open-weight decision models from Convai Innovations, published under Apache 2.0 in September 2026. Give it a state (an email, a ticket, or some JSON) and typed questions, and it returns a choice, score or probability for each question in one forward pass. It is built for teams that want to run decision models on their own hardware, since no hosted API is offered.

What Laya does

• English checkpoint: a ModernBERT-large encoder with a small decision head, 421 million parameters in all.
• Multilingual checkpoint: an mmBERT-base encoder of 322 million parameters, with a 1,024-token budget per question.
• Workflow checkpoint: tuned on four typed-decision workflows.
• Script router: chooses the checkpoint from the script before the forward pass.
• Timing: the authors report 32.8 ms per question on a Tesla T4 for the multilingual checkpoint, measured by themselves.

Who it works with

Teams that run decision models on their own hardware and can test the checkpoints on their own data.

Key facts

• Licence: Apache 2.0
• Release: downloadable checkpoints appeared on 18 and 19 September 2026
• Research: the company says the underlying work dates from March 2025
• Caveat: the model card says the English checkpoint fails on non-Latin scripts while staying confident, and that the multilingual checkpoint is over-confident until its temperature is refitted on the buyer's own data