LLM Reference

Palmyra X5

Released
2026-02-01
Last refreshed
2026-04-27
Status
Researched 45d ago
ProprietaryCommercial use with conditionsCodingRAGAgentsLong contextClassificationJSON / Tool use

Palmyra X5 is worth evaluating for coding, rag, and agents when its provider route and context window match the workload.

Use it for

  • Teams evaluating coding, rag, and agents
  • Workloads that can use a 1m context window
  • Buyers comparing 1 tracked provider route

Do not use it for

  • Vision or document-understanding workloads
Specifications
Family
Palmyra X
Released
2026-02-01
Context
1m
Architecture
Decoder Only
Specialization
general
Openness
Proprietary
License
ProprietaryCommercial use with conditions
Training
pretrained
Created by

AI-powered writing assistance and optimization.

San Francisco, California, United States
Founded 2020
Website
Pricing
Output / 1M
$6.00
Input / 1M
$0.600

Cheapest of 1 route · Writer AI Studio

About

Palmyra X5 is Writer's most advanced model, purpose-built for enterprise AI agents. It delivers high capability at 1M token context for large-scale document processing and complex multi-step agent workflows.

Palmyra X5 is a proprietary model in the Palmyra X family. The structured metadata tracks a 1m-token context window, function calling, tool use, and structured outputs. This page tracks provider routes through Writer AI Studio, with the cheapest tracked route listed at $0.6 input and $6 output per 1M tokens. Headline tracked benchmarks include BigCodeBench 48.7, Google-Proof Q&A 47.2, and MMLU PRO 65.0.

Top use-case fit: coding, agents, and build tasks

Coding

Q/$ D

1 relevant benchmark in the decision map.

RAG

Included by capability and metadata signals in the decision map.

Agents

Included by capability and metadata signals in the decision map.

Provider price ladder

Compare API pricing across 1 providers for input and output tokens, batch, and cached reads when available.

ProviderInput / 1MOutput / 1MRoute
Writer AI Studio$0.600$6.00
Serverless

Capabilities

Function CallingTool UseStructured Outputs

Benchmark peer barsfor Coding

Benchmark scores(3)

Scores are benchmark-specific and are direction-aware: the same numeric gap can mean very different outcomes across suites. Use the leaderboard context and this model's provider route to decide whether the winning margin is meaningful for your workload.
BenchmarkScoreVersionSource
BigCodeBench48.7BigCodeBench (pass@1)https://writer.com/llms/palmyra-x5/
Google-Proof Q&A47.2GPQA (accuracy)https://writer.com/llms/palmyra-x5/
MMLU PRO65.0Official Writer benchmark (accuracy)https://writer.com/llms/palmyra-x5/

Migration checks

No linked migration route is available for this model yet.