Writer: Palmyra X5 (US)
Palmyra X5 (US) is a reasoning model from Writer released on Apr 28, 2025. It reads text and writes text, with a 1.04M token context window and up to 8K tokens per reply.
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It costs $0.60 per million input tokens and $6 per million output tokens.
It supports tool calling.
3 providers serve it, including Amazon Bedrock, Kilo Gateway and Merge Gateway.
- Modalities
- In / out price
- $0.60 / $6 per 1M
- Context
- 1.04M
- Max output
- 8K
- Released
- Apr 28, 2025
- Knowledge cutoff
- n/a
- Tool calling
- Structured output
- Reasoning
- Prompt caching
- Open weights
- Free to use
Palmyra X5 (US) pricing
USD, as listed on Oct 15, 2026. Most bills are input heavy, so the cached input rate matters as much as the headline price.
| Input | $0.60 / 1M tokens | |
|---|---|---|
| Output | $6 / 1M tokens |
Palmyra X5 (US) providers
3 providers serve it, including Amazon Bedrock, Kilo Gateway and Merge Gateway. Each host sets its own price and limits, so the cheapest one is not always the one with the longest context.
| Provider | Input /M | Output /M | Cache read /M | Context | Max output |
|---|---|---|---|---|---|
| Amazon Bedrock | $0.60 | $6 | – | 1.04M | 8K |
| Kilo Gateway | $0.60 | $6 | – | 1.04M | 8K |
| Merge Gateway | $0.60 | $6 | – | 1M | 250K |
What Palmyra X5 (US) costs per month
Pick a workload close to yours or type your own volumes.
Supported request parameters
What you can set when you call Palmyra X5 (US) through an OpenAI compatible API.
- Tools
tools - Reasoning
reasoning - Temperature
temperature
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Palmyra X5 (US) questions
How much does the Palmyra X5 (US) API cost?
$0.60 per million input tokens and $6 per million output tokens. The estimator on this page turns that into a monthly bill for your own workload.
What is the context window of Palmyra X5 (US)?
1,040,000 tokens of input, and it can write up to 8,192 tokens in one reply. As a rough guide, a million tokens is around 750,000 English words.
Which providers serve Palmyra X5 (US)?
3 providers serve it, including Amazon Bedrock, Kilo Gateway and Merge Gateway. Prices differ by host, so the Providers table on this page lists each one with its input and output price.
Does Palmyra X5 (US) support tool calling?
Yes. It accepts tool definitions, which is what an agent needs to call your APIs.
Is Palmyra X5 (US) open source?
No. Writer serves it through an API only, so you cannot download the weights or host it yourself.
When was Palmyra X5 (US) released?
Apr 28, 2025.
Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 15, 2026. The summary is written from these facts.