Project AURIONAI Use-Cases Research & Innovation
LLM

Palmyra X4

Writer language model for complex tasks, workflow automation, coding and data analysis, with a 128k context; Writer lists it for deprecation on 14 December 2026.

WriterWriterPalmyra XFamily
Writer
Levelvariant
ClassLLM
Parametersnot in the notes
Context128,000
Releasednot in the notes
Opennessproprietary
Runs onnot in the notes
Statusactive

R&D Topics

Domain adaptation (vertical models)produced by

Identity

Developer
Writer
Family
Palmyra X
Released
– sources
Weights published
–
Record checked
12 Oct 2026
Where this comes from
Developer and dates from the research notes. Release date is the vendor's public announcement; weights date is when open weights were published.

Architecture and Size

Architecture
not in the notes
Total parameters
– sources
Active parameters
–
Checkpoint parameters
–
Context length
128,000 tokens
Input
text
Output
text
Where this comes from
Parameter counts as the developer states them. Where the checkpoint holds a different total, both are shown (register A16).

Openness and Access

Openness
proprietary
Licence
Proprietary sources
Access routes
API, cloud marketplace
Where this comes from
The licence file governs over registry tags and aggregator labels.

Deployment

Runs on
not in the notes
Footprint
not in the notes
Runtimes
not in the notes
Where this comes from
Deployment tiers and runtimes as named in the notes. Footprint is the notes' figure, not a measurement by AURION.

Indonesia

Indonesian support
not stated
Regional languages
not in the notes
Jakarta hosting
unknown
Languages
not in the notes
Where this comes from
Indonesia fields are carried on every model; unknown is an allowed value.

Benchmark Results

The notes record no benchmark result for this model.

Lineage

The notes record no lineage for this model.

Industry Use Cases

No industry use case links this model.

Sources

  1. dev.writer.com/home/models https://dev.writer.com/home/models
  2. Models at a glance - Amazon Bedrock docs.aws.amazon.com https://docs.aws.amazon.com/bedrock/latest/userguide/model-cards.html

To cite this page: Project AURION, AI Use-Cases Research & Innovation, "Palmyra X4", https://aurion.semai.id/models/writer-palmyra-x4/, records of October 2026.