Palmyra X5
Palmyra X5 is Writer's general-purpose language model for building and scaling AI agents, with a 1 million token context window and adaptive reasoning. It is available through the Writer API, Agent Builder and no-code agents, and it handles image input in chat. Writer has announced that it will be deprecated on December 14, 2026, with Palmyra X6 as the migration path.
Palmyra X5 is a Writer product filed under Generative AI Software. Lifecycle: versioned, 1 version listed, latest X5 (palmyra-x5) (28 Apr 2025).
Source: Choose a model - Writer AI Studio, retrieved 15 Oct 2026
Releases and Lifecycle
All Writer productsRelease and support dates as published by Writer; dates within the next 12 months are highlighted, past dates dimmed. Retrieved 2026-10-14.
Palmyra X5 1 version
Writer announces deprecation of Palmyra X4 and Palmyra X5 for 2026-12-14; Writer lists Palmyra X6 as the replacement.
Sources 3
- Choose a model - Writer AI Studio (deprecation policy and deprecated models) retrieved 2026-10-14
- Changelog - Writer AI Studio retrieved 2026-10-14
- WRITER Palmyra X5 release (press release) retrieved 2026-10-14