Question 1

What does this Fugu 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: Fugu or Fugu Ultra?

Accepted Answer

The available pricing does not establish a comparable input and output token rate for both models. Check the billing unit and selected host in each profile. Images, speech, video and local inference can have different cost structures.

Question 3

Which has the larger context window: Fugu or Fugu Ultra?

Accepted Answer

Both records list a 1M-token context window. An equal limit does not imply equal recall, instruction following, or long-context quality.

Question 4

Which is faster: Fugu 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 Fugu and Fugu Ultra support?

Accepted Answer

Fugu records text, image input and text 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 Fugu or Fugu Ultra?

Accepted Answer

The recorded figures alone do not establish a clear choice. 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	Fugu	Fugu Ultra
Provider	Sakana AI	Sakana AI
Listed pricing route	Sakana AI	Sakana AI
Model family	fugu	fugu
Accepted inputs	text, image	text, image
Produced outputs	text	text
Context window	1M	1M
Input price / 1M	—	$5.00
Output price / 1M	—	$30.00
Reasoning mode	Documented	Documented
Tool calling	Documented	Documented
Image input	Documented	Documented
Audio input	Not documented	Not documented
Structured output	Documented	Documented
License	Proprietary	Proprietary

Fugu vs Fugu Ultra

Fugu

Fugu Ultra

Key differences

Pricing, limits and capabilities

Which model should you choose?

Documentation and model profiles

Questions people ask

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