Writer: Palmyra X5✓ Catalog verified
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...
Overview
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...
Access: available through the official Writer API. Context window: 1.0M.
Specifications
| API identifier | writer/palmyra-x5 |
| Provider | Writer |
| Model type | Text LLM |
| Context window | 1.0M catalog |
| Input modalities | text |
| Output modalities | text |
| Released | Jan 21, 2026 |
| Moderated | Yes |
| Architecture modality | text->text |
API defaults
{
"top_p": null,
"temperature": null,
"frequency_penalty": null
}Pricing
Live pricing components for writer/palmyra-x5 as published in the catalog.
| Pricing component | Raw unit price | Normalized | Unit |
|---|---|---|---|
| Prompt tokens | $6e-7 | $0.60 / 1M | Per input token |
| Completion tokens | $0.000006 | $6.00 / 1M | Per output token |
| Request fee | N/A | N/A | Per request |
| Image fee | N/A | N/A | Per image unit |
| Web search fee | N/A | N/A | Per search request |
Cost calculator
Estimate monthly spend from your own token volumes.
Estimated Total Cost
$1.5Calculated from current list pricing in the ModelsAtlas catalog.Capabilities
| Capability | Status | What it means |
|---|---|---|
| Visual Understanding | Not advertised | Image and document analysis support |
| Audio Processing | Not advertised | Speech and voice aligned flows |
| Tool Calling | Not advertised | Supports tools / function calling |
| Self-Hosting | Not advertised | Deploy outside managed APIs |
Capability signals
Directional signals derived from model metadata and capability tags — not official benchmark submissions.
Quick start
Call Writer: Palmyra X5 through an OpenAI-compatible client.
from openai import OpenAI
client = OpenAI(
base_url="https://openrouter.ai/api/v1",
api_key="YOUR_API_KEY"
)
response = client.chat.completions.create(
model="writer/palmyra-x5",
messages=[{"role": "user", "content": "Explain quantum physics."}]
)
print(response.choices[0].message.content)Alternatives
Closest models by context window from a different provider.
| Model | Provider | Context | Input /1M | Actions |
|---|---|---|---|---|
| OpenAI: GPT-4.1 | OpenAI | 1.0M | $2.00 | View → |
| OpenAI: GPT-4.1 (batch) | OpenAI | 1.0M | $1.00 | View → |
Sources & attribution
Pricing and metadata are maintained in the ModelsAtlas catalog.
Frequently asked questions
How much does Writer: Palmyra X5 cost?
$0.60 per 1M input tokens and $6.00 per 1M output tokens on the official Writer API.
What is the context window of Writer: Palmyra X5?
Writer: Palmyra X5 supports up to 1.0M tokens of context.
Does Writer: Palmyra X5 support tool / function calling?
Writer: Palmyra X5 does not advertise first-class tool/function calling. Check vendor docs for the latest capabilities.
How do I access Writer: Palmyra X5?
Use the official Writer API with the model id `writer/palmyra-x5`. See the Quick start section above for code examples.