Side by side pricing and context for Gemini 3 Flash and GPT-5 Mini. Rates are curated catalog values with last verified dates on each model page.
Gemini 3 Flash
Next-gen Gemini Flash preview for fast, cheaper generation. Good candidate to A/B against 2.5 Flash on cost and quality.
Input $0.500 / Output $3.00 per 1M
Context 1M · Approx (Gemini family)
GPT-5 Mini
Lower-cost GPT-5 tier for high-volume chat and light reasoning. Good default when GPT-5 is overkill but you still want the GPT-5 family tokenizer (Exact in TokenCALC).
Input $0.250 / Output $2.00 per 1M
Context 128K · Exact (o200k_base)
Quick take
- GPT-5 Mini is cheaper on input in this catalog snapshot.
- GPT-5 Mini is cheaper on output in this catalog snapshot.
- Both last verified on their model pages (2026-08-02 / 2026-08-02).
Rate table
| Metric | Gemini 3 Flash | GPT-5 Mini |
|---|---|---|
| Input / 1M | $0.500 | $0.250 |
| Output / 1M | $3.00 | $2.00 |
| Cached input / 1M | $0.050 | $0.025 |
| Context | 1M | 128K |
| Tokenizer | Approx (Gemini family) | Exact (o200k_base) |