Gemini 3.5 Flash-Lite vs GPT-5.4 Nano
Google against OpenAI, costed on the same three workloads. GPT-5.4 Nano is cheaper on all three workloads.
Monthly bill, side by side
| Workload | Gemini 3.5 Flash-Lite | GPT-5.4 Nano | Difference |
|---|---|---|---|
| Support chatbot 2,500 six-turn conversations a day |
$1,613 | $907 | $707 (1.8×) |
| Document summariser 1,000 single-shot summaries a day |
$170 | $103 | $66.60 (1.6×) |
| Coding agent 200 twelve-turn sessions a day |
$1,022 | $607 | $416 (1.7×) |
No prompt caching and no batch discount on either side, so the comparison is like for like. Both figures assume 30 days a month.
The rate cards
| Gemini 3.5 Flash-Lite | GPT-5.4 Nano | |
|---|---|---|
| Input, per 1M tokens | $0.3 | $0.2 |
| Output, per 1M tokens | $2.5 | $1.25 |
| Cached input | $0.03 | $0.02 |
| Context window | 1.05M | 272K |
| Maximum output | 66K | 128K |
| Reasoning model | yes | yes |
| Vision | yes | yes |
Run this comparison on your own numbers
Full detail: Gemini 3.5 Flash-Lite pricing · GPT-5.4 Nano pricing