Gemini 2.5 Flash Preview vs GPT-4o-mini
Both have similar output pricing, while Gemini 2.5 Flash Preview offers a larger context window. Choose Gemini 2.5 Flash Preview or GPT-4o-mini based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Gemini 2.5 Flash Preview | GPT-4o-mini |
|---|---|---|
| Provider | NanoGPT | OpenAI |
| Input / 1M tokens | $0.15 | $0.15 |
| Output / 1M tokens | $0.60 | $0.60 |
| Context window | 1M | 128K |
| Parameters | — | — |
| Open weights | No | No |
| Released | Apr 2025 | Jul 2024 |
| LiveBench score | 52.3 | — |
| Aider Polyglot score | — | 3.6 |
| LMArena (Chatbot Arena) Elo score | — | 1286 |
| LMArena Vision Elo score | — | 1066 |
| GPQA Diamond score | — | 37.7 |
| Epoch Capabilities Index score | — | 127 |
FAQ
Is Gemini 2.5 Flash Preview or GPT-4o-mini cheaper?
Gemini 2.5 Flash Preview and GPT-4o-mini have comparable output pricing.
Which has the larger context window, Gemini 2.5 Flash Preview or GPT-4o-mini?
Gemini 2.5 Flash Preview has the larger context window (1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.