Palmyra X Models by Writer
Last refreshed 2026-07-10. Next refresh: weekly.
Details
Capabilities
About
The Palmyra X family of large language models is an innovative offering by Writer, an enterprise-centric AI platform. These models are tailored to enhance next-generation AI applications and autonomous agents with remarkable accuracy and reliability suitable for enterprise purposes. One of the standout features of Palmyra X is its utilization of synthetic data for training, which ensures cost-effectiveness while maintaining optimal performance. This is evidenced by its impressive rankings on benchmarks like the Berkeley Tool Calling Leaderboard and Stanford's HELM. Palmyra X models are equipped with advanced functionalities such as tool calling, built-in retrieval augmented generation (RAG), and code generation and deployment, all within an expanded context window. Additionally, specialized versions, including Palmyra-Med and Palmyra-Fin, cater to industry-specific requirements. The flagship model, Palmyra X 004, excels in reasoning and tool-calling accuracy, significantly surpassing other models in its class while also supporting multilingual and multi-modal capabilities in over 30 languages 1312.
Decision facts
- Best fit
- vision and multimodal workJSON / Tool usestructured outputs
- Capability starting point
- Palmyra X5 with 1m context and JSON / Tool use, structured outputs, and multimodal inputs
- Lowest tracked input
- Palmyra X5 · $0.600/1M · Writer AI Studio
- Closest related family
- Camel
Current Variants
Use-when guidance is based on each model's tracked capabilities, context window, release date, and replacement status.
Use when the workload needs 128k context, JSON / Tool use, and structured outputs.
Use when the workload needs 1m context, JSON / Tool use, and structured outputs.
| Model | Use when | Released | Signals | Status |
|---|---|---|---|---|
| Palmyra X4 | Use when the workload needs 128k context, JSON / Tool use, and structured outputs. | Unknown release | 128k contextJSON / Tool usestructured outputs | Current |
| Palmyra X5 | Use when the workload needs 1m context, JSON / Tool use, and structured outputs. | 2026-02 | 1m contextJSON / Tool usestructured outputs | Current |
Release Timeline
3 release groupsReplaced By
Keep for legacy integrations; evaluate Palmyra X5 before new work.
Specifications(6 models)
| Model | Released | Context | Parameters | Vision | Multimodal | JSON / Tool use | Structured Outputs |
|---|---|---|---|---|---|---|---|
| Palmyra X4 | — | 128k | — | No | No | Yes | Yes |
| Palmyra X5 | 2026-02 | 1m | — | Yes | Yes | Yes | Yes |
Available From(3 providers)
Pricing
| Model | Provider | Input / 1M | Output / 1M | Type |
|---|---|---|---|---|
| Palmyra X5 | Writer AI Studio | $0.6 | $6 | Serverless |
| Palmyra X5 | AWS Bedrock | $0.6 | $6 | Serverless |
| Palmyra X5 | OpenRouter | $0.6 | $6 | Serverless |
| Palmyra X4 | Writer AI Studio | $2.5 | $10 | Serverless |
