Sakana AI launches Fugu, a multi-agent orchestration system that claims to surpass Claude Fable 5

What happened

Tokyo-based Sakana AI shipped Fugu to general availability on June 22 — a multi-agent orchestrator that combines frontier models from OpenAI, Anthropic and Google behind a single OpenAI-compatible API.

Context and impact

Fugu runs on a 7B-parameter "conductor" model built on two ICLR 2026 papers (TRINITY and Conductor), shifting attention from monolithic frontier models toward orchestration. If third parties confirm the benchmarks, it's another signal that compound systems can outpace even the strongest single model — the same trend OpenRouter has been pushing.

Details

• Ultra tier reportedly surpasses Fable 5 (solved Rubik's Cube in 19 steps)
• Subscriptions from $20/month plus pay-as-you-go API
• Ultra API pricing: $5 / $30 per million input / output tokens
• Built on the TRINITY and Conductor papers from ICLR 2026