Fugu Ultra v2

Sakana Ultra tier. More capability than Fugu Max when budget allows.

ChatSakana1M tokens$5.4503 / $32.7018 · 1M

sakana/fugu-ultra-v2

Context
1M tokens
Completion cap
128,000
Tools
No
JSON
No
Released
2026-09-11

Call it from Geek Hub

Same OpenAI SDK. Change the base URL and the model id.

curl https://api.geekhub.mx/v1/chat/completions \
  -H "Authorization: Bearer $GEEKHUB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "sakana/fugu-ultra-v2",
    "messages": [{"role": "user", "content": "Hola"}]
  }'
Get an API key

Frequently asked questions

What is Fugu Ultra v2?
Sakana Ultra tier. More capability than Fugu Max when budget allows. Fugu Ultra v2 runs on the Geek Hub API (OpenAI-compatible). Model id: sakana/fugu-ultra-v2.
Is Fugu Ultra v2 free?
No. Input is $5.4503 per 1M tokens and output is $32.7018 per 1M tokens on Geek Hub (markup included).
What is the context length of Fugu Ultra v2?
Fugu Ultra v2 has a 1M tokens context window. It supports up to 128,000 completion tokens.
Does Fugu Ultra v2 support tool calling and structured outputs?
Fugu Ultra v2 does not advertise tool calling on this endpoint. Structured outputs are not listed for this endpoint.
When was Fugu Ultra v2 released?
Fugu Ultra v2 was released on 2026-09-11.

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