On the cheapest model from each, Google Gemini wins on raw output price: Gemini 3.1 Flash-Lite at $1.5 per 1M output tokens versus $4.5. But "cheaper per token" rarely means "cheaper for your app". The model that needs fewer retries, shorter prompts, or less reasoning can cost less in practice even at a higher sticker rate.
Last verified June 14, 2026| Model | In / 1M | Out / 1M |
|---|---|---|
| GPT-5.5 | $5 | $30 |
| GPT-5.4 | $2.5 | $15 |
| GPT-5.4 mini | $0.75 | $4.5 |
| GPT-Realtime-2 audio | $32 | $64 |
| GPT-Realtime-2 text | $4 | $24 |
| GPT-Realtime-2 image | $5 | — |
| GPT-Image-2 image | $8 | $30 |
| GPT-Image-2 text | $5 | — |
| Model | In / 1M | Out / 1M |
|---|---|---|
| Gemini 3.5 Flash | $1.5 | $9 |
| Gemini 2.5 Pro (<=200k) | $1.25 | $10 |
| Gemini 2.5 Pro (>200k) | $2.5 | $15 |
| Gemini 2.5 Flash (text/image/video) | $0.3 | — |
| Gemini 2.5 Flash | — | $2.5 |
| Gemini 3.1 Flash-Lite (text/image/video) | $0.25 | — |
| Gemini 3.1 Flash-Lite | — | $1.5 |
| Gemini 3.1 Pro Preview (<=200k) | $2 | — |
| Gemini 3.1 Pro Preview (<=200k, incl. thinking) | — | $12 |
| Gemini 3.1 Pro Preview (>200k) | $4 | — |
| Gemini 3.1 Pro Preview (>200k, incl. thinking) | — | $18 |
| Gemini 3 Flash Preview (text/image/video) | $0.5 | — |
| Gemini 3 Flash Preview | — | $3 |
Per-token rates can't answer that. The winner depends on how your code uses each model. PrePrice scans your project and computes the real per-user cost either way, plus what to charge so you clear margin.
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