sakana

Sakana: Fugu Ultra v2

sakana/fugu-ultra-v2

Fugu Ultra v2 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...

text

Try in Playground ↗

Input / 1M tokens$5

Output / 1M tokens$30

Context window1,000,000

Maximum output128,000

Provider-supported parameters

These are upstream capabilities. Jevrouter supports the subset described in the API contract; chat input is currently text only.

include_reasoningreasoningreasoning_effortstructured_outputstool_choicetoolsweb_search_optionsstreammax_tokensdeveloper_role

Capabilities are imported from OpenRouter’s catalog. This does not mean every model has been independently tested by Jevrouter.

Catalog updated: 2026-09-22T08:51:50.371Z · Price version: cmub1176o0018r82gfe1o4nxl:1

Provider pricing fields · USD per indicated unit

{
  "prompt": "0.000005",
  "completion": "0.00003",
  "overrides": [
    {
      "prompt": "0.00001",
      "completion": "0.000045",
      "input_cache_read": "0.000001",
      "min_prompt_tokens": 272000
    }
  ],
  "web_search": "0.01",
  "input_cache_read": "0.0000005"
}

Make a request

curl --no-buffer https://api.jevrouter.io/v1/chat/completions \
  -H "Authorization: Bearer $JEVROUTER_API_KEY" \
  -H "Content-Type: application/json" \
  -d @- <<'JSON'
{
  "model": "sakana/fugu-ultra-v2",
  "messages": [
    {
      "role": "user",
      "content": "Hello"
    }
  ],
  "max_tokens": 1024
}
JSON

Plan your integration

Connect with the OpenAI Python SDK →Estimate this model’s cost →Budgets, request status and safe retries →

Source: OpenRouter model catalog. Imported descriptions and capabilities are provider declarations, not independent benchmark results. Jevrouter currently uses OpenRouter as its managed upstream.