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 …
Model details →Writer: Palmyra X5 vs xAI: Grok 4.20 Beta
xAI: Grok 4.20 Beta wins on 4 of 6 axes — pricing and capability skew in its favour for most workloads.
Grok 4.20 Beta is xAI's newest flagship model with industry-leading speed and agentic tool calling capabilities. It combines the lowest hallucination rate on the market with strict prompt adherance, delivering consistently precise and truth…
Model details →Side-by-side comparison
| Capability | Writer: Palmyra X5 | xAI: Grok 4.20 Beta | Winner |
|---|---|---|---|
| Context window Maximum number of input tokens the model can attend to in a single request. | 1.0M | 2M | 🏆 xAI: Grok 4.20 Beta |
| Input price (per 1M) Cost per million input tokens billed by the provider. | $0.60 | $2.00 | 🏆 Writer: Palmyra X5 |
| Output price (per 1M) Cost per million output tokens billed by the provider. | $6.00 | $6.00 | Tie |
| Tool / function calling First-class support for emitting structured tool calls. | — | Yes | 🏆 xAI: Grok 4.20 Beta |
| Vision input Accepts image inputs alongside text. | — | Yes | 🏆 xAI: Grok 4.20 Beta |
| Reasoning mode Internal chain-of-thought / extended-thinking support. | — | Yes | 🏆 xAI: Grok 4.20 Beta |
Frequently asked questions
Is Writer: Palmyra X5 better than xAI: Grok 4.20 Beta?
xAI: Grok 4.20 Beta wins on 4 of 6 axes — pricing and capability skew in its favour for most workloads.
What's the price difference between Writer: Palmyra X5 and xAI: Grok 4.20 Beta?
Input: $0.60 vs $2.00 per 1M tokens. Output: $6.00 vs $6.00 per 1M tokens.
What context windows do Writer: Palmyra X5 and xAI: Grok 4.20 Beta support?
Writer: Palmyra X5 supports up to 1.0M tokens. xAI: Grok 4.20 Beta supports up to 2M tokens.
Do both Writer: Palmyra X5 and xAI: Grok 4.20 Beta support tool calling?
Writer: Palmyra X5: not advertised. xAI: Grok 4.20 Beta: yes.