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Sakana Fugu-Ultra v1.1

CurrentReleased Jul 24, 2026ProprietaryReasoning1M context

Released Jul 24, 2026 — see all recent releases

Decision reading
Sakana Fugu-Ultra v1.1 is tracked, but not publicly ranked yet. The profile exposes 0 sourced benchmark rows and leaves unsupported fields blank until a published record exists.

Data as of September 4, 2026 · How the score is built

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Spec sheet

Each documented value carries its source. Missing fields stay visible as not sourced or not published, rather than disappearing from the page.

API model ID
Not published
Context window
1M
Maximum output
Not sourced yet
Knowledge cutoff
Not sourced yet
Input modalities
Not sourced yet
Output modalities
Not sourced yet
Parameters
Not disclosed by the provider
Availability
Not sourced yet
Cloud regions
Not tracked yet
Lifecycle
Current
API capabilities
Tool calling, structured outputs, and batch support are not tracked yet
Prompt caching
Published at $0.50 per million cached input tokens
Self-host
Weights are not published
Rate limits
Not tracked yet

Lineage

The sequence follows explicit supersedes links. A successor's displayed score stays at least 0.1 points above its predecessor; raw benchmark rows do not move. Scores and prices remain blank when the corresponding public row or first-party rate is unavailable.

  1. Jun 22, 2026

    Sakana Fugu-Ultra

    Not publicly ranked · Price not listed

  2. Jul 24, 2026 · you are here

    Sakana Fugu-Ultra v1.1

    Not publicly ranked · $5 / $30

ultra · Ultra v1.1

Sakana FuguSakana FuguSakana Fugu-UltraFugu Cyber

How to read this profile

The visual layer above carries the decisions. These notes preserve the model, ranking, coverage, and family context behind the numbers.

We track Sakana Fugu-Ultra v1.1, but no weighted text-model benchmark result is published on the site yet. This page shows the metadata and separate protocol evidence we can verify now; a BenchLM score will appear only if compatible public evaluations land.

Sakana Fugu-Ultra v1.1 is a proprietary model with a 1M context window. It uses an explicit reasoning mode, which can improve complex problem solving while adding latency and token use.

Sakana AI announced Fugu-Ultra v1.1 on July 24, 2026 with model id fugu-ultra-v1.1, support for newer frontier models, improvements on every evaluated benchmark, and gains of up to 7.9 points. Sakana has not yet published the versioned per-benchmark table on its Fugu product page, so BenchLM records the release and unchanged price without copying v1.0 scores onto v1.1. The June fugu-ultra-20260615 row remains separately reproducible.

Sakana Fugu-Ultra v1.1 sits in the Sakana Fugu family with Sakana Fugu, Sakana Fugu-Ultra, Fugu Cyber. Its explicit predecessor is Sakana Fugu-Ultra. The profile has no source-displayable benchmark row yet.

Radar

Sakana Fugu-Ultra v1.1 release history

Full release history

Radar confirmed these at the source. Already tracking Sakana Fugu-Ultra v1.1? See the free Radar Brief for what changes next.

Frequently asked questions

How does Sakana Fugu-Ultra v1.1 perform overall in AI benchmarks?

Sakana Fugu-Ultra v1.1 does not have any source-displayable benchmark rows yet, so this profile does not assign a public score or rank. Documented specifications remain visible, while score-led charts and claims stay unavailable until a published evaluation can be attached to the exact model.

Which sibling models are related to Sakana Fugu-Ultra v1.1?

Sakana Fugu-Ultra v1.1 belongs to the Sakana Fugu family. Related tracked variants include Sakana Fugu, Sakana Fugu-Ultra, Fugu Cyber. A sibling link indicates shared lineage or a documented configuration relationship; it does not mean the variants have identical pricing, context limits, benchmark evidence, or deployment behavior. Compare before switching.

Does Sakana Fugu-Ultra v1.1 have full benchmark coverage on BenchLM?

No. Sakana Fugu-Ultra v1.1 currently has 0 source-displayable rows across 422 tracked benchmark slots. The profile exposes published, non-generated evidence and leaves missing categories blank until an exact evaluation is available. Coverage describes how much was measured; it is not a penalty added to an individual benchmark result.

What is the context window size of Sakana Fugu-Ultra v1.1?

Sakana Fugu-Ultra v1.1 has a reported context window of 1M in the exact-model catalog record. The value stays visible, but the profile marks its source link as unavailable instead of presenting it as directly documented. Maximum output length remains separate because providers often publish a different limit.

Compare Sakana Fugu-Ultra v1.1 with every tracked model410 comparisons

Last updated September 4, 2026. Runtime fields remain blank until a sourced snapshot exists.

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