Choose a model

Deprecation notice: Palmyra X4 (palmyra-x4) will be deprecated on November 18, 2026.Migration path: Use Palmyra X5 (palmyra-x5) or Palmyra X6 (palmyra-x6) instead. Palmyra X5 and X6 have a 1M token context window (Palmyra X4 is 128k). On Amazon Bedrock, use us.writer.palmyra-x5-v1:0. See pricing for cost details and the deprecation policy for more information.

Whether you use no-code, Agent Builder, or APIs, you need to choose a model. Here is an overview of the Palmyra models and their capabilities.

Model comparison

The following table compares the capabilities, context windows, and pricing of the Palmyra X6, X5, and X4 models.

Feature	Palmyra X6	Palmyra X5	Palmyra X4
Description	Agentic model for WRITER Agent and long-horizon enterprise workflows with sub-agents, grounding, and MCP tool use	General-purpose model with a 1M token context window and adaptive reasoning	Language model for complex tasks that require extended context
API model ID	`palmyra-x6`	`palmyra-x5`	`palmyra-x4`
Bedrock model ID	—	`writer.palmyra-x5-v1:0`	`writer.palmyra-x4-v1:0`
Pricing (Input)	$2.00 / 1M tokens	$0.60 / 1M tokens	$2.50 / 1M tokens
Pricing (Output)	$8.00 / 1M tokens	$6.00 / 1M tokens	$10.00 / 1M tokens
Context window	1M tokens	1M tokens	128k tokens
Max output	8,192 tokens	8,192 tokens	4,096 tokens

Palmyra X6 is the default model for WRITER Agent. Palmyra X6, X5, and X4 are available via API. Palmyra X5 and X4 are also available in No-code and Agent Builder. To analyze images, use vision capabilities with Palmyra X5.

Model details

Palmyra X6

Overview
Use cases and capabilities
Benchmarking

Palmyra X6 is Writer’s default agentic model for WRITER Agent and long-horizon enterprise workflows. It was co-developed with the product’s orchestration layer. Capability scores in the Benchmarking tab measure the model in that combined system, which is how customers deploy it.Palmyra X6 can hold a single objective for up to 8 hours without supervision, planning, executing, verifying output, and delivering finished work rather than a draft that needs another pass.Pricing:

Input: $2.00 per 1M tokens
Output: $8.00 per 1M tokens

Context window: 1MTask economics (median on Writer’s internal evaluation of production customer tasks, n=22):

Cost per finished task: $0.12
Latency per finished task: 26 seconds

Writer evaluates Palmyra X6 on production customer tasks (marketing, revenue, research, and outreach), not abstract reasoning benchmarks alone. Each capability is scored 0 to 1 against a locked baseline (n=22, reference frozen 2026-06-07). Scores measure Palmyra X6 running in WRITER Agent.Capability scores (Palmyra X6 in WRITER Agent)

Capability	What it measures	Score
Sub-agents	Delegating work to spawned sub-agents and merging results	0.86
Grounding and retrieval	Knowledge Graph and document grounding, retrieval, and citation	0.91
MCP tool use	Discovering and calling external tools through MCP connectors	0.88
Content generation	Drafting and editing long- and short-form content to a brief	0.88
Playbooks	Executing predefined multi-step workflows end to end	0.84
Model and system awareness	Knowing its identity, tools, scope, and when to safely refuse	0.97
Brand voice	Applying brand voice and custom instructions to output	0.92
Image analysis and generation	Interpreting input images and generating new images	0.80
Presentations (early)	Generating slide presentations from a prompt or source	0.74

Average capability score: 0.87.Domain benchmarks (raw model)The scores below measure the Palmyra X6 model directly, not in WRITER Agent, on finance benchmarks:

Benchmark	Score
Finance Agent	0.753
FinanceQA	0.673
FinanceBench	0.855

Palmyra X5

Overview
Use cases and capabilities
Benchmarking

Palmyra X5 is Writer’s general-purpose model for building and scaling AI agents, featuring a 1 million token context window, adaptive reasoning, and strong speed and cost efficiency.Pricing:

Input: $0.60 per 1M tokens
Output: $6.00 per 1M tokens

Content window: 1M

Palmyra X4

Overview
Use cases and capabilities
Benchmarking

palmyra-x4 is an advanced language model that excels in processing and understanding complex tasks. It’s ideal for workflow automation, coding tasks, and data analysis.Pricing:

Input: $2.50 per 1M tokens
Output: $10.00 per 1M tokens

Content window: 128k

Using models with the Writer API

Chat completions
Text generation

To select the Palmyra model you want to use for a chat completion, specify the model ID in the model parameter of the request.Below is an example of specifying the palmyra-x5 model in a chat completion request.

curl --location 'https://api.writer.com/v1/chat' \
--header 'Content-Type: application/json' \
--header "Authorization: Bearer $WRITER_API_KEY" \
--data '{
  "model": "palmyra-x5",
  "messages": [
    {
      "role": "user",
      "content": "Summarize GDPR compliance requirements for a cloud-based data storage provider"
    }
  ]
}'

from writerai import Writer

# Initialize the client. If you don't pass the `api_key` parameter,
# the client looks for the `WRITER_API_KEY` environment variable.
client = Writer()

chat_response = client.chat.chat(
  model="palmyra-x5",
  messages=[
    {
      "role": "user",
      "content": "Summarize GDPR compliance requirements for a cloud-based data storage provider"
    }
  ]
)

print(chat_response.choices[0].message.content)

import { Writer } from "writer-sdk";

// Initialize the client. If you don't pass the `apiKey` parameter,
// the client looks for the `WRITER_API_KEY` environment variable.
const client = new Writer();

const chat_response = await client.chat.chat({
  model: "palmyra-x5",
  messages: [
    {
      role: "user",
      content:
        "Summarize GDPR compliance requirements for a cloud-based data storage provider",
    },
  ],
});

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

You can also use prebuilt tools within a general-purpose chat completion request:

LLM tool to call another model
Knowledge Graph tool to ask questions about a Knowledge Graph
Translation tool to translate text
Web search tool to search the web

To analyze images, use vision capabilities with Palmyra X5 directly in a chat completion.

To select the Palmyra model you want to use for text generation, specify the model ID in the model parameter of the request.Below is an example of specifying the palmyra-x5 model in a text generation request.

curl --location 'https://api.writer.com/v1/completions' \
--header 'Content-Type: application/json' \
--header "Authorization: Bearer $WRITER_API_KEY" \
--data '{
  "model": "palmyra-x5",
  "prompt": "Summarize GDPR compliance requirements for a cloud-based data storage provider"
}'

from writerai import Writer

# Initialize the client. If you don't pass the `api_key` parameter,
# the client looks for the `WRITER_API_KEY` environment variable.
client = Writer()

text_generation = client.completions.create(
  model="palmyra-x5",
  prompt="Summarize GDPR compliance requirements for a cloud-based data storage provider"
)

print(text_generation.choices[0].text)

import { Writer } from "writer-sdk";

// Initialize the client. If you don't pass the `apiKey` parameter,
// the client looks for the `WRITER_API_KEY` environment variable.
const client = new Writer();

const text_generation = await client.completions.create({
  model: "palmyra-x5",
  prompt:
    "Summarize GDPR compliance requirements for a cloud-based data storage provider",
});

console.log(text_generation.choices[0].text);

Get started with the Writer API by signing up for a free account and following the API quickstart.

Deprecation policy

Timeline for deprecation

We’ll announce the deprecation of a model at least three months in advance. This will give customers time to plan for the migration to the new model.
We’ll continue to support deprecated models for a period of time after they’re deprecated. This will give customers time to migrate to the new model.
We’ll eventually stop supporting deprecated models. The timeline for this will vary depending on the model. We will announce the end of support for a deprecated model at least six months in advance.

Deprecated models

Model name	Deprecation Date
Palmyra X4	2026-11-18
Palmyra X 003 Instruct	2026-07-13
Palmyra Vision	2026-07-13
Palmyra Med	2026-07-13
Palmyra Fin	2026-07-13
Palmyra Creative	2026-07-13
Palmyra Fin 32k	2025-03-03
Palmyra X 002 32k	2024-09-06
Palmyra X 32k Instruct	2024-09-06
Palmyra X 002 Instruct	2024-09-06

Migration path

We’ll provide customers with a migration path to the new model, including detailed documentation and support to help them migrate their applications.
We’ll also offer training and consulting services to help customers transition.

Getting started

Monitor and manage

Core concepts

Models and pricing

Connect to your data

Chat completions

No-code agents

Knowledge Graphs

Tool calling

Additional capabilities

Integrations

Security and compliance

Resources

Model comparison

Model details

Using models with the Writer API

Deprecation policy

Timeline for deprecation

Deprecated models

Migration path

​Model comparison

​Model details

​Using models with the Writer API

​Deprecation policy

​Timeline for deprecation

​Deprecated models

​Migration path

Model comparison

Model details

Using models with the Writer API

Deprecation policy

Timeline for deprecation

Deprecated models

Migration path