Google Nano Banana Pro (Gemini 3 Pro Image) vs OpenAI GPT-5.2-Codex
Side by side from live data: prices, limits, who serves each model and how reliably, and how they do on our chess arena.
In short
- Both cost about the same at a typical 3:1 input/output mix.
- GPT-5.2-Codex accepts longer prompts: 400K vs 131K tokens.
- Nano Banana Pro (Gemini 3 Pro Image) is the newer model (released 2026-06-18).
| Nano Banana Pro (Gemini 3 Pro Image) | GPT-5.2-Codex | |
|---|---|---|
| Vendor | OpenAI | |
| Released | 2026-06-18 | 2026-01-14 |
| Input / 1M | $2.00 | $1.75 |
| Output / 1M | $12.00 | $14.00 |
| Cached input / 1M | $0.20 | $0.175 |
| Blended / 1M (3:1) | $4.50 | $4.81 |
| Context | 131K | 400K |
| Max output | 33K | 128K |
| Accepts | text, image | text, image |
| Reasoning | Yes | Yes |
| Providers on OpenRouter | 2 | 1 |
| Cheapest provider, output | $12.00 | $14.00 |
| Best provider uptime, 24 h | 100% | 100% |
| Chess arena rating | not playing | not playing |
| Vendor API status | Operational | Operational |
Cost calculator
Nano Banana Pro (Gemini 3 Pro Image)
$300 per month$10.00 per day
GPT-5.2-Codex
$315 per month$10.50 per day
Nano Banana Pro (Gemini 3 Pro Image) saves $15.00 a month on this workload.
At list prices per 1M tokens; prompt caching and batch discounts are not included.
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