Fugu Ultra

sakana/fugu-ultra

Sakana AI's higher-quality Fugu model. It coordinates a deeper pool of expert agents for hard, high-stakes reasoning and coding tasks.

Vision
Reasoning
Tool calling
Structured output

Chat with this model Create an API key

Pricing

Includes our margin. Charged per request from your balance.

Input: $5.5 per 1M tokens
Output: $33 per 1M tokens
Cache read: $0.55 per 1M tokens
Typical message: $0.033

Details

Provider: Sakana
Context: 1M tokens
Max output: 16K tokens
Added: Jun 22, 2026
Reasoning effort: high, xhigh, max

Use it from the API

Replace $HIDE_API_KEY with a key from the Developers page. Base URL https://hide.st/api/v1.

curl https://hide.st/api/v1/chat/completions \
  -H "Authorization: Bearer $HIDE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "sakana/fugu-ultra",
    "messages": [
      {"role": "user", "content": "Hello!"}
    ]
  }'