GPT-4o mini vs Claude Sonnet 4.5
GPT-4o mini is cheaper on output tokens, while Claude Sonnet 4.5 offers a larger context window. Choose GPT-4o mini or Claude Sonnet 4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GPT-4o mini | Claude Sonnet 4.5 |
|---|---|---|
| Provider | Merge Gateway | Merge Gateway |
| Input / 1M tokens | $0.15 | $3.00 |
| Output / 1M tokens | $0.60 | $15.00 |
| Context window | 128K | 200K |
| Parameters | — | — |
| Open weights | No | No |
| Released | Jul 2024 | Sep 2025 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.