Fugu Ultraon Krater.ai
Fugu Ultra is the higher-performance model in Sakana AI's Fugu family. Rather than a single monolithic model, Fugu is a learned multi-agent orchestration system: a language model trained to route
Released June 24, 2026
Specifications
Fugu Ultra at a glance
Context
1M tokens
Max output
128K tokens
Input
Text, Image
Output
Text
Input price
$5.00 / 1M
Output price
$30.00 / 1M
Capabilities
What it is good at
Catalog capabilities
- Accepts image input
- Generates text responses
- Supports tool calling
- Supports structured outputs
Good for
Compare
Compare Fugu Ultra
Fugu Ultra vs Fugu Max
Fugu Max is the cost-performance model in Sakana AI's Fugu family.
Open comparisonFugu Ultra vs Fugu Ultra v2
Fugu Ultra v2 is the higher-performance model in Sakana AI's Fugu family.
Open comparisonFugu Ultra vs Sakana Namazu
Namazu is a Japanese-specialized reasoning model from Sakana AI, based on Kimi K2.6 with additional training for Japanese language and business contexts.
Open comparisonFAQ
Questions about Fugu Ultra
Clear answers based on the model catalog and Krater access.