UltraGPT
Google: Nano Banana (Gemini 2.5 Flash Image)
Gemini 2.5 Flash Image, a.k.a. "Nano Banana," is now generally available. It is a state of the art image generation model with contextual understanding. It is capable of image generation,...
Intelligence overview
32.8K tok
Context window
8.2K tok
Max output
What Google: Nano Banana (Gemini 2.5 Flash Image) can do.
Reasoning
Extended reasoning
Works through problems step by step before answering, trading latency for accuracy on harder tasks.
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 #10 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.
$0.3 / 1M tok
$2.5 / 1M tok
Built for serious work.
Build
Generate and refactor code, with the ability to return structured, parseable output.
Think
Works through multi-step problems with extended reasoning before it answers.
Create
Works across Image and Text output for richer creative work.
Ask Google: Nano Banana (Gemini 2.5 Flash Image) 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 (Gemini 2.5 Flash Image) 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
- 32.8K tokens
- Max output
- 8.2K tokens
- Input modalities
- Image + Text
- Output modalities
- Image + Text
- Knowledge cutoff
- Jan 31, 2025
- Release date
- Aug 26, 2025
- Streaming
- Supported
- Tool calling
- Not supported
- JSON mode
- Supported
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.