LLM Comparison
Claude Opus 5 vs Palmyra X5
Side-by-side specs, pricing & capabilities · Updated September 2026
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2/6 modelsSame tier:
| Organization | ||
| OpenTools Score | 92 6.1 | |
| Family | Claude Opus | Palmyra |
| Status | Current | Current |
| Release Date | Jul 2026 | Jan 2026 |
| Context Window | 1.0M tokens | 1.0M tokens |
| Input Price | $5.00/M tokens | $0.60/M tokens |
| Output Price | $25.00/M tokens | $6.00/M tokens |
| Pricing Notes | Claude Opus 5 is priced at $5 per million input tokens and $25 per million output tokens; fast mode is priced separately at Fable-level rates. | — |
| Capabilities | textvisionreasoningcodingtool-useagentslong-context | textcode |
| Max Output | 128K tokens | 8K tokens |
| API Identifier | claude-opus-5 | writer/palmyra-x5 |
| Benchmarks | ||
| Artificial Analysis Intelligence Index | 61artificial-analysis | — |
| Artificial Analysis Intelligence Index v4.1.1 | 63artificial-analysis | — |
| Artificial Analysis Intelligence Index v4.3 | 51https://artificialanalysis.ai/models/claude-opus-5 | — |
| GPQA Diamond | 93.2323artificial-analysis | — |
| SciCode | 56.3657artificial-analysis | — |
| Terminal-Bench 2.1 | 89.1386artificial-analysis | — |
| View Claude Opus 5 | View Palmyra X5 | |
Cost Calculator
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| Model | Input | Output | Total / mo | vs Best |
|---|---|---|---|---|
| Palmyra X5Cheapest | $0.60 | $3.00 | $3.60 | — |
| Claude Opus 5 | $5.00 | $12.50 | $17.50 | +386% |
Anthropic
Claude Opus 5
Claude Opus 5 is Anthropic's Opus-class model for complex agentic coding and enterprise work. Official Claude docs list the claude-opus-5 API ID, 1M token context window, 128k max output, adaptive thinking, and $5 input / $25 output pricing per million tokens.
Writer
Palmyra X5
Palmyra X5 is a large language model from Writer. Supports up to 1,040,000 token context window. Available from $0.60/M input tokens.
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