writer
Writer: Palmyra X5
writer/palmyra-x5
Our take
AI-assisted analysis based on the sources below. Suitability is an editorial assessment; test it on your own workload.
According to the OpenRouter catalog, writer/palmyra-x5 is a text-to-text model from Writer, described there as the provider's most advanced offering and designed for building and scaling AI agents in enterprise settings. The catalog lists a context window of roughly one million tokens, which is unusually large and could suit long-document workflows. However, this source pack contains only catalog data: it reports no benchmark results, knowledge cutoff, or independent model card, so the claimed capabilities have not been verified and should be validated on real workloads before adoption.[1]
Strengths
- The OpenRouter catalog describes writer/palmyra-x5 as purpose-built for enterprise AI agent workloads, positioning it for agentic application development.[1]
- A catalog-listed context window of about one million tokens suggests capacity for very long inputs such as large document sets.[1]
- The catalog lists standard sampling controls (temperature, top_p, top_k, stop, max_tokens) for tuning output.[1]
Limitations
- Evidence is limited to the OpenRouter catalog; no independent model card was available in this source pack, so claims should be validated on your own workloads.[1]
- The supplied evidence reports no benchmark results, knowledge cutoff, or measured performance data for this model.[1]
- The catalog records only text input and text output for this variant; other modalities are not listed, which is unknown rather than confirmed absence.[1]
Where to use it
- Worth evaluating for long-context tasks such as summarizing or querying large document collections, given the catalog's large context window.[1]
- A candidate to test for enterprise agent-building workflows, matching the use case the catalog description targets.[1]
- Could be trialed in text generation pipelines that need configurable sampling parameters.[1]
Sources
- [1] OpenRouter catalog · Writer: Palmyra X5Sources checked: Nov 13, 2026
About this model
Description below is the original text supplied by OpenRouter, shown in the source language.
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...
Specifications
- Model ID
- writer/palmyra-x5
- Canonical ID
- writer/palmyra-x5-20250428
- Creator
- writer
- Added to OpenRouter
- 21.01.2026
- Context length
- 1,040,000
- Modality
- text->text
- Input modalities
- text
- Output modalities
- text
- Token pricing
- USD per 1M tokens: in $0.600 / out $6
- Knowledge cutoff
- —
- Expiration date
- —
Tasks and capabilities
A grade appears only where the source supplies a matching measurement for that task, the model is active and the cohort holds at least 10 comparable models. The capability column lists facts the source declares — supported formats, reasoning and tool parameters — which are not measured quality.
| Task | Grade | Source-declared capability |
|---|---|---|
| General quality | No measurement | — |
| Coding | No measurement | — |
| Agents | No measurement | — |
| Writing | No measurement | output: text |
| Reasoning | No measurement | — |
| Document analysis | No measurement | — |
| Vision | No measurement | — |
| Image generation | No measurement | — |
| Audio | No measurement | — |
| Video | No measurement | — |
| Embeddings | No measurement | — |
Evaluations
No evaluations are supplied for this model.
How grades work
Each letter grade compares a model only against other models scored by the same source and metric in the current snapshot. S means the top 10%, A the next 20%, B the next 30%, C the rest. Models without a published measurement are shown as not rated — a supported format alone never implies measured quality.
- S — S — top 10% of the cohort
- A — A — next 20% of the cohort
- B — B — next 30% of the cohort
- C — C — below the B band
Providers
Optional live provider statistics from OpenRouter. Missing values are unknown, not zero.
| Provider | Context length | Price in /1M | Price out /1M | Latency p50 (30m, s) | Throughput p50 (30m, tok/s) | Uptime (30m) |
|---|---|---|---|---|---|---|
| Amazon Bedrock | 1,040,000 | $0.600 | $6 | — | — | — |
Provider data retrieved: 13.11.2026
Related articles
No published articles identify this model yet.