GPT Audio Mini vs GPT-4 O Mini Realtime Preview: cost comparison
Prices updated 2026-10-27 · computed from live provider data
Short answer: GPT-4 O Mini Realtime Preview is cheaper on a
3:1 input/output blend — $1.05 per million tokens versus
$1.05, a 0% difference.
Both offer the same 128,000-token context window, so cost is the deciding factor.
Head to head
| GPT Audio Mini | GPT-4 O Mini Realtime Preview | |
|---|---|---|
| Input, per 1M tokens | $0.600 | $0.600 |
| Output, per 1M tokens | $2.40 | $2.40 |
| Blended 3:1, per 1M | $1.05 | $1.05 |
| Context window | 128,000 | 128,000 |
| Vendor | gpt | gpt |
Monthly cost at real volumes
| Workload (input / output) | GPT Audio Mini | GPT-4 O Mini Realtime Preview |
|---|---|---|
| 1M in / 250K out | $1.20 | $1.20 |
| 10M in / 2.5M out | $12.00 | $12.00 |
| 100M in / 25M out | $120 | $120 |
Which should you pick?
Because the context windows are identical, the cheaper option is the better default. Choose GPT-4 O Mini Realtime Preview unless you are already standardised on gpt tooling and want to avoid a second integration.