Sakana Fugu Ultra now available on AI Gateway
Sakana's multi-agent routing model now live on Vercel's AI Gateway—no single model, just the best tool for each job.
Why it matters
Sakana Fugu Ultra brings a novel architecture (multi-agent routing pool) to mainstream developer access via Vercel, signaling a shift from single-model inference to dynamic agent orchestration at the platform layer.
The key facts
15 to knowSakana Fugu Ultra launched on Vercel AI Gateway
Architecture: coordinates 1-3 agents dynamically, routes work based on problem type
Capability parity with Claude Mythos Preview and Fable 5 (reasoning + scientific benchmarks)
Integration: SDK call via modelsakana/fugu-ultra
AI Gateway features: unified API, usage/cost tracking, retries, failover, performance optimization, custom reporting, Zero Data Retention, BYOK support
Pricing: provider rates with no platform markup or inference fees
Model playground available for testing
Fugu Ultra available on Vercel AI Gateway
Routes work across 1-3 agents depending on problem complexity
Benchmarked comparable to Claude Mythos Preview and Fable 5
No platform markup on inference pricing; matches provider rates directly
Built on pool of publicly accessible frontier models, not single monolithic model
Integration via AI SDK with modelsakana/fugu-ultra parameter
Includes cost tracking, usage monitoring, failover, and performance optimization
Published June 22, 2026
Go to the source
Vercel Blogvercel.com
Publisher excerpt: Sakana Fugu Ultra from Sakana AI is now available on .AI Gateway Fugu Ultra is built on a pool of publicly accessible frontier models, rather than running as a single model. It coordinates several models, routing work to 1-3 agents depending on the problem and combining their results into a single…