Nano Banana 2 (Gemini 3.1 Flash Image)
Google · released Jun 18, 2026
- Type
- Proprietary
- Input
- $0.50
- Output
- $3.00
- Cached
- Not published
List price · per 1M tokens · Google AI Studio at 66K context · source ↗
Our take
Written Aug 3, 2026Nano Banana 2 is Google's proprietary image-generation-and-editing model released in June 2026. It handles both text and images in either direction, and can work with up to 131,072 tokens in a single request.
Pick this for image generation and editing tasks that need text-and-image input alongside text-and-image output. Use Google AI Studio for the fastest measured throughput, or Vertex AI if you are already inside Google Cloud. Skip it if you need verified quality scores to justify cost, or if you want to run the model on your own hardware.
The case for it
- 131,072-token request limit supports extensive prompts and reference material.
- Identical pricing across all three tracked providers, so provider choice comes down to throughput and workflow fit.
- Fastest measured throughput on Google AI Studio at 151 tokens per second.
The case against it
- No independent quality benchmarks in our data — no measured scores, no image-specific ratings, no human preference data.
- Output cost is high relative to unverified quality, with nothing in our catalogue to justify the price.
- Google Vertex throughput is 37 percent slower than Google AI Studio for the same price.
How good is it?
We hold no score for this model.
We look for every model we track on every board we watch, and none of them has turned up Nano Banana 2 (Gemini 3.1 Flash Image) — so there is no intelligence, coding, agentic or writing score to show you, not a low one, none.
Or rent it from someone else
Why this differs from the header. The strip above quotes Google AI Studio's own list price. This is the cheapest live offer at the widest standard context we hold, whoever is serving it — a reseller undercutting a lab is ordinary commerce, not an error.
- per 1M tokens
- $0.50 in / $3.00 out
- Context served
- 131K
- Throughput
- Not measured
| Provider | In / out per 1M tokens | Context | Throughput | Trains on prompts | Logs prompts | Zero retention |
|---|---|---|---|---|---|---|
| OpenRouter | $0.50 / $3.00 | 131K | not measured | Unknown | Unknown | Unknown |
| Google Vertex AIglobal | $0.50 / $3.00 | 131K | 96 tok/s | No | No | Confirmed |
| Google AI Studio | $0.50 / $3.00 | 66K | 151 tok/s | No | Yes55 days | Unknown |
Google Vertex AI
Google AI StudioAcross the 3 listings we hold: 2 say they do not train on prompts, 0 say they do and 1 do not say. 1 appear in the zero-retention registry we check; the rest are unknown to us rather than confirmed either way.
What each host's API supports
From the parameter list each endpoint publishes. Streaming is omitted: nothing we hold reports it, for any model.
- ✓
- Supported
- ✗
- Not supported
- Not published
- host gave no parameter list
| Provider | Tool calling | JSON output | Strict schema |
|---|---|---|---|
| OpenRouter | ✗ | ✓ | ✓ |
| Google Vertex AIglobal | ✗ | ✓ | ✗ |
| Google AI Studio | ✗ | ✓ | ✓ |
Tool calling: 0 of 3 listings say yes, 3 say no. JSON output: 3 of 3 listings say yes. Strict schema: 2 of 3 listings say yes, 1 says no.
Models people weigh against Nano Banana 2 (Gemini 3.1 Flash Image)
When we formed this view
Dates behind this page
Prices last checked 9d ago
What we do not know about this model yet
- No board we watch has turned up a score, so we hold no quality figures at all.
- Nothing we hold says whether an endpoint streams, so we do not show it either way.
- 1 of 3 listings do not say whether they train on prompts.
- We hold no cached-input rate for any of its listings.
Licence and identifiers
What the licence allowsWe hold no licence record for this model. Inside are the identifiers you need to pull it — its Hugging Face repo where we have one, our slug and a machine-readable card.
Licence
Commercial API terms. We hold no licence record for this model, so there is nothing to summarise here.
Identifiers
- Modality record
- text+image->text+image
- Catalogue slug
- google-nano-banana-2-gemini-3-1-flash-image