Sakana Fugu

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.