SIDE BY SIDE
Fugu Max vs Fugu Ultra
Both are Sakana models. Fugu Max was added to OpenRouter on 2026-09-11, Fugu Ultra on 2026-06-24.
| Field | Fugu Max | Fugu Ultra |
|---|---|---|
| Provider | Sakana | Sakana |
| Family | Sakana | Sakana |
| Province | The High Peaks | The High Peaks |
| Context window | 1M tokens | 1M tokens |
| Maximum output | 128K tokens | 128K tokens |
| Input / 1M tokens | $2.00 | $5.00 |
| Output / 1M tokens | $6.00 | $30.0 |
| Accepts | text, files, images | text, images |
| Produces | text | text |
| Reasoning | Yes | Yes |
| Tool use | Yes | Yes |
| Added to OpenRouter | 2026-09-11 | 2026-06-24 |
| Model ID | sakana/fugu-max | sakana/fugu-ultra |
Questions and answers
Which is cheaper, Fugu Max or Fugu Ultra?
Fugu Max costs less for both input ($2.00 vs $5.00) and output ($6.00 vs $30.0) per million tokens. On input, Fugu Max is 60% cheaper.
Which has the larger context window?
Both have a 1M-token context window.
What can one do that the other cannot?
Nothing among reasoning, tool use and image input: both support reasoning, tool use and image input.
Answers are computed from the 2026-10-24 catalog snapshot.