Question 1

What does this Nano Banana 2 vs Fugu Ultra comparison cover?

Accepted Answer

It brings together documented inputs and outputs, token limits, deployment terms and available pricing. When both models have source-linked, verified results on a shared benchmark, those results are shown with their individual sources. The comparison is a starting point for evaluating your own workload.

Question 2

Which is cheaper: Nano Banana 2 or Fugu Ultra?

Accepted Answer

Nano Banana 2 lists $0.50 input and $60.00 output per 1M tokens. Fugu Ultra lists $5.00 input and $30.00 output. The cheaper workload depends on the mix of input and output. Long-context tiers, caching, batch processing and retries can change the bill.

Question 3

Which has the larger context window: Nano Banana 2 or Fugu Ultra?

Accepted Answer

Nano Banana 2 lists 131.07K tokens and Fugu Ultra lists 1M. Fugu Ultra therefore has the larger recorded context window, but capacity alone is not a quality score.

Question 4

Which is faster: Nano Banana 2 or Fugu Ultra?

Accepted Answer

There is no matched speed measurement for both models with the same source, host, region and date. Test the same prompts at your expected concurrency and measure time to the first useful response as well as complete task time.

Question 5

What input and output types do Nano Banana 2 and Fugu Ultra support?

Accepted Answer

Nano Banana 2 records text, image, video, pdf input and text, image output. Fugu Ultra records text, image input and text output. “Not documented” means the current source record is incomplete; it does not prove that a modality is unsupported.

Question 6

Should I choose Nano Banana 2 or Fugu Ultra?

Accepted Answer

Consider Nano Banana 2 if you need a lower listed input rate. Consider Fugu Ultra if you need larger context or a lower listed output rate. Test both on the same representative examples and judge the output against your acceptance criteria. Include tool failures, retries and the time to a completed task.

Specification	Nano Banana 2	Fugu Ultra
Provider	Google	Sakana AI
Listed pricing route	Google	Sakana AI
Model family	gemini-flash	fugu
Accepted inputs	text, image, video, pdf	text, image
Produced outputs	text, image	text
Context window	131.07K	1MHigher
Max output	32.77K	—
Input price / 1M	$0.50Lower	$5.00
Output price / 1M	$60.00	$30.00Lower
Reasoning mode	Documented	Documented
Tool calling	Not documented	Documented
Image input	Documented	Documented
Audio input	Not documented	Not documented
Structured output	Not documented	Documented
License	Proprietary	Proprietary

Nano Banana 2 vs Fugu Ultra

Nano Banana 2

Fugu Ultra

Key differences

Pricing, limits and capabilities

Which model should you choose?

Documentation and model profiles

Questions people ask

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