Sakana claims its AI model router Fugu Ultra v1.1 now beats Fable 5 without even including it in the pool
7.9 points. That's how much Sakana's Fugu Ultra v1.1 claims to improve — and it doesn't even need Fable 5 in the pool to beat it.
Why it matters
Sakana's model router upgrade claims significant performance gains, but lacks independent verification. The Claude Code integration signals growing ecosystem consolidation around agentic tooling, though the unverified benchmark claim and EU unavailability limit immediate business impact.
The key facts
12 to knowFugu Ultra v1.1 claims 7.9-point improvement over v1.0
Claims to beat Fable 5 without including it in routing pool
Independent verification does not yet exist
Adds Claude Code-compatible endpoint
Service remains unavailable in EU
UNVERIFIED — benchmark claims lack third-party validation
Fugu Ultra v1.1 claims up to 7.9-point improvement over v1.0
Claims to outperform Fable 5 without including it in the routing pool
No independent verification of benchmark claims yet
Added Claude Code-compatible endpoint
Service unavailable in EU
UNVERIFIED — claims lack third-party validation
Go to the source
The Decoderthe-decoder.com
Publisher excerpt: Sakana AI has updated its Fugu Ultra AI router to version 1.1, claiming gains of up to 7.9 points over v1.0. Independent verification doesn't exist yet. The update adds a Claude Code-compatible endpoint. The service remains unavailable in the EU.