pi-sakana-provider

Sakana AI custom provider for Pi.

This package registers provider id sakana via pi.registerProvider() and uses Pi's built-in openai-responses API implementation against https://api.sakana.ai/v1.

Models

| Model | Reasoning | Input | Context window | Max output | | --- | --- | --- | --- | --- | | fugu | yes | text, image | 1,000,000 | 65,536 | | fugu-ultra | yes | text, image | 1,000,000 | 131,072 | | fugu-ultra-20260615 | yes | text, image | 1,000,000 | 131,072 |

All Fugu models are reasoning models. Sakana only accepts reasoning efforts high and xhigh (max is an alias of xhigh); any other value is rejected. Pi thinking levels are mapped accordingly: minimal, low, medium, and high all send high; xhigh sends xhigh; off sends no effort (the API then uses its default).

Context windows match Sakana's published model catalog. Max-output values are not published in the catalog; the values above are conservative defaults.

Benchmarks

See the official benchmark comparison on Sakana's models page — Fugu and Fugu Ultra vs. other frontier models across coding, reasoning, scientific, and agentic suites.

Usage

Set your Sakana API key:

export SAKANA_API_KEY=...

Load once for testing (run from the repo root):

pi -e . --provider sakana --model fugu-ultra

Install from npm:

pi install npm:pi-sakana-provider

Or install from a local checkout (run from the repo root):

pi install .

Or add the package to ~/.pi/agent/settings.json (the npm name, or a path relative to that file / an absolute path):

{
  "packages": ["pi-sakana-provider"],
  "defaultProvider": "sakana",
  "defaultModel": "fugu-ultra",
  "defaultThinkingLevel": "xhigh"
}

License

MIT — see LICENSE.