Palmyra X4

WriterMCP Tool CallReasoning

writer/palmyra-x4Closed API

Enterprise language model for workflow automation, coding, data analysis, and tool use

Benchmark Pricing$2.50 / 1M in$10.00 / 1M out

Context: 128,000 tokens•Max Output: 4,096 tokens•Released: 2024-10-09

TECHNICAL SPECIFICATIONS

Context Window128,000128K tokens

Max Output4,0964.1K tokens

LicenseProprietaryCloud API only

Input Modalities

Text

Function / Tool CallingSupported (MCP Ready)

Structured OutputsGuaranteed Schema

MODEL CONTEXT PROTOCOL (MCP) READINESS

✓ Palmyra X4 natively supports OpenAI / Anthropic format tool calling and is fully compatible with MCP servers and agent loops.

MCP Context Window Recommendations

With a context capacity of 128,000 tokens, this model can handle moderately large MCP tool definitions and multi-turn conversation logs comfortably.

API CALL INVOCATION EXAMPLE

// Example: Calling Palmyra X4 via OpenAI SDK
import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.WRITER_API_KEY,
});

const response = await client.chat.completions.create({
  model: "writer/palmyra-x4",
  messages: [{ role: "user", content: "Hello! Can you inspect MCP tools?" }],
});

console.log(response.choices[0].message.content);