Palmyra X5
WriterReleased Jan 21, 2026
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...
- Context window
- 1.0M tokens
- Max output
- 8K tokens
- Input
- text
- Output
- text
- Tokenizer
- Other
- Released
- Jan 21, 2026
Pricing
Per 1M tokens. The provider price and our flat 3% fee are separate columns — what you pay is their sum.
| Per 1M tokens | Provider | + 3% fee | You pay |
|---|---|---|---|
| Input | $0.600 | $0.018 | $0.618 |
| Output | $6.00 | $0.180 | $6.18 |
Supported parameters
- max_tokens
- stop
- temperature
- top_k
- top_p
Call it
OpenAI-compatible: point your SDK at api.openkey.ai/v1 and use model writer/palmyra-x5.
curl https://api.openkey.ai/v1/chat/completions \
-H "Authorization: Bearer $OPENKEY_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "writer/palmyra-x5",
"messages": [{"role": "user", "content": "Hello"}]
}'import os
from openai import OpenAI
client = OpenAI(
base_url="https://api.openkey.ai/v1",
api_key=os.environ["OPENKEY_API_KEY"],
)
completion = client.chat.completions.create(
model="writer/palmyra-x5",
messages=[{"role": "user", "content": "Hello"}],
)
print(completion.choices[0].message.content)import OpenAI from "openai";
const client = new OpenAI({
baseURL: "https://api.openkey.ai/v1",
apiKey: process.env.OPENKEY_API_KEY,
});
const completion = await client.chat.completions.create({
model: "writer/palmyra-x5",
messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);Questions
- How much does Palmyra X5 cost via API?
- Through OpenKey, Palmyra X5 costs $0.618 per 1M input tokens and $6.18 per 1M output tokens. That is the provider price ($0.600 / $6.00) plus a flat 3% fee — nothing else.
- What is Palmyra X5's context window?
- Palmyra X5 accepts up to 1.0M tokens of context and returns up to 8K tokens per request.
- Is Palmyra X5 OpenAI-compatible?
- Yes. Send requests to OpenKey's /v1/chat/completions endpoint with model "writer/palmyra-x5" using any OpenAI SDK — only the base URL and API key change.
- What inputs does Palmyra X5 support?
- Palmyra X5 accepts text input and produces text output.