Google: Gemini 2.5 Flash Lite vs OpenAI: o4 Mini
Google: Gemini 2.5 Flash Lite is cheaper than OpenAI: o4 Mini by about 91% on a blended (75% input / 25% output) basis. Google: Gemini 2.5 Flash Lite charges $0.100000 / $0.400000 per 1M input/output tokens; OpenAI: o4 Mini charges $1.100000 / $4.400000.
| Field | Google: Gemini 2.5 Flash Lite | OpenAI: o4 Mini |
|---|---|---|
| Input $/Mtok | $0.100000 | $1.100000 |
| Output $/Mtok | $0.400000 | $4.400000 |
| Cache read $/Mtok | $0.010000 | $0.275000 |
| Cache write $/Mtok | – | – |
| Input $/Mchar | n/a | 0.309885 |
| Output $/Mchar | n/a | 1.239541 |
| Context window | 1048576 | 200000 |
| Tokenizer | gemini | o200k |
Price history
Same workload, monthly cost
Illustrative monthly cost at 10M tokens/month, split per workload preset. Not a substitute for the calculator, which uses your own volume, cache and batch assumptions.
| Workload | Google: Gemini 2.5 Flash Lite | OpenAI: o4 Mini |
|---|---|---|
| Coding agent | $1.15 | $12.65 |
| RAG chat | $1.45 | $15.95 |
| Summarisation (batch) | $1.30 | $14.30 |
| Classification | $1.06 | $11.66 |
| Chat assistant | $2.20 | $24.20 |
| Content generation | $3.40 | $37.40 |
Cite this page
Google: Gemini 2.5 Flash Lite vs OpenAI: o4 Mini: $0.100000/$0.400000 vs $1.100000/$4.400000 per 1M tokens, as of 2026-10-04 (Token Barometer, https://tokenbarometer.com/compare/google_gemini-2.5-flash-lite-vs-openai_o4-mini).
Google: Gemini 2.5 Flash Lite page | OpenAI: o4 Mini page | Open in calculator