Using Palmyra X4 on Writer AI Studio

Quick Start

1. 1
   Create an account at Writer AI Studio and generate an API key.
2. 2
   Use the Writer AI Studio SDK or REST API to call palmyra-x4 — see the documentation for request format.
3. 3
   You'll be billed $2.50/1M input, $10.00/1M output tokens. See full pricing.

Code Examples

About Writer AI Studio

Writer AI Studio serves Writer's Palmyra models through an authenticated model-list endpoint and chat API. Palmyra X5 offers a 1M-token context window and accepts image fragments through chat; Palmyra X4 offers a 128K context window. Writer announces a 2026-07-13 removal for X 003 Instruct, Vision, Med, Fin, and Creative, with X5 as the migration target.

Writer AI Studio is Writer's enterprise platform and authenticated API for the Palmyra model family. At the 2026-07-10 audit it documents active Palmyra X5 and X4 direct APIs, plus five deprecated Palmyra API models that remain available until their scheduled 2026-07-13 removal.

Pricing on Writer AI Studio

Capabilities

About Palmyra X4

Writer lists Palmyra X4 as an active AI Studio API model with a 128K-token context window and a 4,096-token output limit. Its documented capabilities map to Coding, Agents, Long context, and JSON / Tool use.