UltraGPT
Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview)
Gemini 3.1 Flash Image Preview, a.k.a. "Nano Banana 2," is Google’s latest state of the art image generation and editing model, delivering Pro-level visual quality at Flash speed. It combines...
Intelligence overview
65.5K tok
Context window
59.0K tok
Max output
What Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) can do.
Reasoning
Extended reasoning
Works through problems step by step before answering, trading latency for accuracy on harder tasks.
Adjustable effort
Choose how much the model deliberates per request — trade speed for depth as the task demands.
Multimodal
Image understanding
Reads and reasons over images alongside text in the same prompt.
Development
Structured output
Returns responses constrained to a JSON schema, ready to parse without cleanup.
Streaming
Streams tokens as they're generated instead of waiting on the full response.
Performance
Design Arena — ranked #4 across 3 categories
Pay for what you use.
Every model in UltraGPT runs behind one flat subscription — this is the underlying per-token cost the catalog tracks.
$0.5 / 1M tok
$3 / 1M tok
Built for serious work.
Build
Generate and refactor code, with the ability to return structured, parseable output.
Think
Works through hard problems with adjustable reasoning effort — high, minimal.
Create
Works across Image and Text output for richer creative work.
Ask Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) anything.
A preview of the real UltraGPT composer — the model you see here is the model you get.
Continues in the UltraGPT app — one login, every model.
How Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) stacks up.
The closest models in the catalog by provider, capability and score — real entries, pulled from the same directory.
Technical details.
Specification
- Context window
- 65.5K tokens
- Max output
- 59.0K tokens
- Input modalities
- Image + Text
- Output modalities
- Image + Text
- Knowledge cutoff
- Jan 1, 2025
- Release date
- Feb 26, 2026
- Reasoning effort
- high, minimal
- Streaming
- Supported
- Tool calling
- Not supported
- JSON mode
- Supported
Reasoning
More from Google, and everything else.
This model is one entry in the full UltraGPT catalog — browse the rest, compare pricing and context windows, or filter by capability.