Google Nano Banana 2 (Gemini 3.1 Flash Image) vs Nous Hermes 4 405B
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
- Nano Banana 2 (Gemini 3.1 Flash Image) is 1.3× cheaper at a typical mix of 3 input tokens per output token.
- Both accept prompts up to 131K tokens.
- Nano Banana 2 (Gemini 3.1 Flash Image) is the newer model (released 2026-06-18).
| Nano Banana 2 (Gemini 3.1 Flash Image) | Hermes 4 405B | |
|---|---|---|
| Vendor | Nous | |
| Released | 2026-06-18 | 2025-08-26 |
| Input / 1M | $0.50 | $1.00 |
| Output / 1M | $3.00 | $3.00 |
| Cached input / 1M | — | $0.20 |
| Blended / 1M (3:1) | $1.13 | $1.50 |
| Context | 131K | 131K |
| Max output | 33K | 118K |
| Accepts | text, image | text |
| Reasoning | Yes | Yes |
| Providers on OpenRouter | 3 | 1 |
| Cheapest provider, output | $3.00 | $3.00 |
| Best provider uptime, 24 h | 100% | 100% |
| Chess arena rating | not playing | not playing |
| Vendor API status | Operational | — |
Cost calculator
Nano Banana 2 (Gemini 3.1 Flash Image)
$75.00 per month$2.50 per day
Hermes 4 405B
$105 per month$3.50 per day
Nano Banana 2 (Gemini 3.1 Flash Image) saves $30.00 a month on this workload.
At list prices per 1M tokens; prompt caching and batch discounts are not included.
Compare Nano Banana 2 (Gemini 3.1 Flash Image) with