xAI Grok 4 Fast Non-Reasoning vs Anthropic: Claude Opus 4.5
xAI Grok 4 Fast Non-Reasoning is cheaper on output tokens, while xAI Grok 4 Fast Non-Reasoning offers a larger context window. Choose xAI Grok 4 Fast Non-Reasoning or Anthropic: Claude Opus 4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | xAI Grok 4 Fast Non-Reasoning | Anthropic: Claude Opus 4.5 |
|---|---|---|
| Provider | Helicone | Helicone |
| Input / 1M tokens | $0.20 | $5.00 |
| Output / 1M tokens | $0.50 | $25.00 |
| Context window | 2M | 200K |
| Parameters | — | — |
| Open weights | No | No |
| Released | Sep 2025 | Nov 2025 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.