Claude Opus 4 vs OpenRouter: Fusion
OpenRouter: Fusion is cheaper on output tokens, while OpenRouter: Fusion offers a larger context window. Choose Claude Opus 4 or OpenRouter: Fusion based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Claude Opus 4 | OpenRouter: Fusion |
|---|---|---|
| Provider | OpenRouter | OpenRouter |
| Input / 1M tokens | $15.00 | $-1,000,000.00 |
| Output / 1M tokens | $75.00 | $-1,000,000.00 |
| Context window | 200K | 1M |
| Parameters | — | — |
| Open weights | No | — |
| Released | May 2025 | — |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.