Sakana Fugu Ultra now available on AI Gateway

What's new

• Sakana Fugu Ultra: available as sakana/fugu-ultra on AI Gateway.
• Multi-agent routing: not a single model — Fugu Ultra allocates a task across 1-3 frontier agents (Claude, GPT, Gemini, etc.) and merges outputs.
• Performance: benchmarks comparable to Claude Mythos Preview and Fable 5.
• Pricing: billed per request, not per token (orchestration has fixed overhead).

Why it matters

Fugu Ultra is the first production-grade multi-agent model available behind a standard API. For teams hitting Mythos/Fable rate limits (after the Anthropic Korea curbs), it's an alternative with a comparable ceiling. It also signals the market shifting from single-model to ensemble agent architectures.

How to try it

On AI Gateway, call model ID sakana/fugu-ultra. Works with the OpenAI-compatible SDK and Vercel AI SDK. Limited free tier, full access on Pro.