Question 1

What does this Nano Banana 2 vs GPT-5.5 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 GPT-5.5?

Accepted Answer

Nano Banana 2 lists $0.50 input and $60.00 output per 1M tokens. GPT-5.5 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 GPT-5.5?

Accepted Answer

Nano Banana 2 lists 131.07K tokens and GPT-5.5 lists 1.05M. GPT-5.5 therefore has the larger recorded context window, but capacity alone is not a quality score.

Question 4

Which is faster: Nano Banana 2 or GPT-5.5?

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 GPT-5.5 support?

Accepted Answer

Nano Banana 2 records text, image, video, pdf input and text, image output. GPT-5.5 records text, image, pdf 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 GPT-5.5?

Accepted Answer

Consider Nano Banana 2 if you need a lower listed input rate. Consider GPT-5.5 if you need larger context or larger maximum output 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	GPT-5.5
Provider	Google	OpenAI
Listed pricing route	Google	OpenAI
Model family	gemini-flash	gpt
Accepted inputs	text, image, video, pdf	text, image, pdf
Produced outputs	text, image	text
Context window	131.07K	1.05MHigher
Max output	32.77K	128KHigher
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 GPT-5.5

Nano Banana 2

GPT-5.5

Key differences

Pricing, limits and capabilities

Which model should you choose?

Documentation and model profiles

Questions people ask

Compare a different pair