Writer Palmyra X5 and X4 foundation models are now available in Amazon Bedrock

One thing we’ve witnessed in recent months is the expansion of context windows in foundation models (FMs), with many now handling sequence lengths that would have been unimaginable just a year ago. However, building AI-powered applications that can process vast amounts of information while maintaining the reliability and security standards required for enterprise use remains challenging.

For these reasons, we’re excited to announce that Writer Palmyra X5 and X4 models are available today in Amazon Bedrock as a fully managed, serverless offering. AWS is the first major cloud provider to deliver fully managed models from Writer. Palmyra X5 is a new model launched today by Writer. Palmyra X4 was previously available in Amazon Bedrock Marketplace.

Writer Palmyra models offer robust reasoning capabilities that support complex agent-based workflows while maintaining enterprise security standards and reliability. Palmyra X5 features a one million token context window, and Palmyra X4 supports a ...