GPT-5.1 vs Palmyra X5
OpenAI vs Writer — benchmarks, pricing, and capabilities side by side.
- •Palmyra X5 is cheaper ($0.60 vs $1.25 per 1M input)
- •Palmyra X5 has a larger context window (1M)
| GPT-5.1 | Palmyra X5 | |
|---|---|---|
| Intelligence index | 89 | — |
| Developer | OpenAI | Writer |
| Type | LLM | LLM |
| Access | API only | API only |
| Context window | 400,000 tokens | 1,040,000 tokens |
| Input price | $1.25 / 1M | $0.60 / 1M |
| Output price | $10.00 / 1M | $6.00 / 1M |
| Speed | 115 tok/s | — |
| Released | November 12, 2025 | January 21, 2026 |
| Parameters | — | — |
| Input modalities | Text, Image | Text |
| Output modalities | Text | Text |