GPT-5.4 Pro vs OpenRouter: Fusion
OpenRouter: Fusion is cheaper on output tokens, while GPT-5.4 Pro offers a larger context window. Choose GPT-5.4 Pro or OpenRouter: Fusion based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GPT-5.4 Pro | OpenRouter: Fusion |
|---|---|---|
| Provider | OpenRouter | OpenRouter |
| Input / 1M tokens | $30.00 | $-1,000,000.00 |
| Output / 1M tokens | $180.00 | $-1,000,000.00 |
| Context window | 1.1M | 1M |
| Parameters | — | — |
| Open weights | No | — |
| Released | Mar 2026 | — |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.