Writer: Palmyra X5
writer/palmyra-x5
Access Palmyra X5 from Writer using Puter.js AI API.
Get Started// npm install @heyputer/puter.js
import { puter } from '@heyputer/puter.js';
puter.ai.chat("Explain quantum computing in simple terms", {
model: "writer/palmyra-x5"
}).then(response => {
document.body.innerHTML = response.message.content;
});
<html>
<body>
<script src="https://js.puter.com/v2/"></script>
<script>
puter.ai.chat("Explain quantum computing in simple terms", {
model: "writer/palmyra-x5"
}).then(response => {
document.body.innerHTML = response.message.content;
});
</script>
</body>
</html>
# pip install openai
from openai import OpenAI
client = OpenAI(
base_url="https://api.puter.com/puterai/openai/v1/",
api_key="YOUR_PUTER_AUTH_TOKEN",
)
response = client.chat.completions.create(
model="writer/palmyra-x5",
messages=[
{"role": "user", "content": "Explain quantum computing in simple terms"}
],
)
print(response.choices[0].message.content)
curl https://api.puter.com/puterai/openai/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_PUTER_AUTH_TOKEN" \
-d '{
"model": "writer/palmyra-x5",
"messages": [
{"role": "user", "content": "Explain quantum computing in simple terms"}
]
}'
Model Card
Palmyra X5 is Writer's most advanced enterprise LLM, featuring a 1-million-token context window and adaptive reasoning capabilities designed for agentic AI workflows.
The model is purpose-built for orchestrating multi-step agents, with sub-second tool-calling latency (~300ms) and the ability to process a full million-token prompt in roughly 22 seconds. It supports code generation, structured outputs, and over 30 languages.
On benchmarks, Palmyra X5 scores 48.7 on BigCodeBench (Full, Instruct), 53% on Longbench v2, and 19.1% on OpenAI's MRCR 8-needle test — close to GPT-4.1's 20.25% on the same evaluation. It's priced at $0.60/M input tokens and $6/M output tokens, positioning it as a cost-efficient alternative for teams building complex, data-heavy agent pipelines at scale.
Context Window 1M
tokens
Max Output 8K
tokens
Input Cost $0.6
per million tokens
Output Cost $6
per million tokens
Release Date Apr 29, 2025
Model Playground
Try Palmyra X5 instantly in your browser.
This playground uses the Puter.js AI API — no API keys or setup required.
Frequently Asked Questions
You can access Palmyra X5 by Writer through Puter.js AI API. Include the library in your web app or Node.js project and start making calls with just a few lines of JavaScript — no backend and no configuration required. You can also use it with Python or cURL via Puter's OpenAI-compatible API.
Yes, it is free if you're using it through Puter.js. With the User-Pays Model, you can add Palmyra X5 to your app at no cost — your users pay for their own AI usage directly, making it completely free for you as a developer.
| Price per 1M tokens | |
|---|---|
| Input | $0.6 |
| Output | $6 |
Palmyra X5 was created by Writer and released on Apr 29, 2025.
Palmyra X5 supports a context window of 1M tokens. For reference, that is roughly equivalent to 2,080 pages of text.
Palmyra X5 can generate up to 8K tokens in a single response.
Yes — the Palmyra X5 API works with any JavaScript framework, Node.js, or plain HTML through Puter.js. Just include the library and start building. See the documentation for more details.
Get started with Puter.js
Add Palmyra X5 to your app without worrying about API keys or setup.
Read the Docs View Tutorials