---
id: "writer/palmyra-x5"
also: ["writer/palmyra-x5-20250428"]
cheapest_list_usd_per_m: "0.6 in, 6.0 out, at amazon-bedrock on openrouter"
cheapest_effective_usd_per_m: "0.5998 in, 6.0 out, at amazon-bedrock on openrouter"
context: 1040000
max_output: 8192
input: ["text"]
output: ["text"]
released: "2026-01-21"
api: ["/api/v1/chat/completions", "/api/v1/completions", "/api/v1/messages", "/api/v1/responses"]
params: ["max_tokens", "stop", "temperature", "top_k", "top_p"]
endpoints: 1
gateways: "openrouter (1)"
no_training: 1
trains: 0
retains_prompts: 0
---
# Writer: Palmyra X5

Palmyra X5 is Writer's most advanced model, purpose-built for building and scaling AI agents across the enterprise. It delivers industry-leading speed and efficiency on context windows up to 1 million...