Writer: Palmyra X5

Text input Text output
Author's Description

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 tokens, powered by a novel transformer architecture and hybrid attention mechanisms. This enables faster inference and expanded memory for processing large volumes of enterprise data, critical for scaling AI agents.

Key Specifications
Cost
$$$$
Context
1M
Released
Jan 21, 2026
Speed
Ability
Reliability
Supported Parameters

This model supports the following parameters:

Top P Max Tokens Stop Temperature
Performance Summary

Palmyra X5, Writer's advanced model for enterprise AI agents, demonstrates exceptional reliability with a 98% success rate, consistently providing usable responses. However, its speed ranking places it in the 8th percentile, indicating generally longer response times across benchmarks. In terms of cost, Palmyra X5 exhibits moderate pricing, ranking in the 37th percentile. The model showcases significant strengths in specific areas. It achieves perfect accuracy in both Hallucinations (100.0%) and Ethics (100.0%) benchmarks, notably being the most accurate model at its price point and speed for these categories. Its performance in Mathematics is also a standout, achieving 97.2% accuracy and ranking among the top 3 models. General Knowledge and Reasoning also show solid performance at 99.4% and 80.6% accuracy respectively. Conversely, Palmyra X5 exhibits weaknesses in Email Classification and Instruction Following, with accuracies of 93.8% (24th percentile) and 47.1% (43rd percentile) respectively. While its Coding accuracy is moderate at 83.3%, these areas suggest potential for improvement. The model's extended context length of 1 million tokens, powered by its novel architecture, positions it well for processing large enterprise datasets despite its slower inference speeds.

Model Pricing

Current Pricing

Feature Price (per 1M tokens)
Prompt $0.6
Completion $6

Price History

Available Endpoints
Provider Endpoint Name Context Length Pricing (Input) Pricing (Output)
Amazon Bedrock
Amazon Bedrock | writer/palmyra-x5-20250428 1M $0.6 / 1M tokens $6 / 1M tokens
Benchmark Results
Benchmark Category Reasoning Strategy Free Executions Accuracy Cost Duration