Fugu

Sakana says Fugu Max dynamically routes requests across open-weight and specialist models at two to six times lower cost than elite models. In the same release, the company says Fugu Ultra v2 led five of eight hard evaluation suites.

AI21 says its pipeline routes exploration, extraction, and patching across model tiers and reaches 80.8% on SWE-Bench Pro at $5.99 per task. Other workflows use critic agents, readable harnesses, Fugu/Nemotron routing, and scheduled Gemini agents.

Sakana made Fugu Ultra available through Vercel AI Gateway, while new technical writeups described the trained routing head and multi-step orchestration behind it. The integration matters because teams can invoke Fugu’s model-selection workflow through existing gateway plumbing instead of standing up custom routing.

Sakana launched Fugu Ultra on AI Gateway and published a technical report, with early testers sharing mixed results. Reports mention polished outputs on some tasks, but also 30-minute runs, uneven coding quality, and much higher cost than GLM-5.2.

Sakana AI launched Fugu and Fugu Ultra as OpenAI-compatible orchestration models that route, verify, and synthesize across multiple models. The release matters because Sakana is selling multi-agent coordination as a single endpoint, but it has not fully disclosed model mix or pass-through costs.

Sakana AI opened beta access to Fugu, a multi-agent orchestration system that routes work across multiple frontier models via an OpenAI-compatible API. The launch packages model selection and role assignment as an external runtime, but access is still gated by beta signup.