Sakana AI, released Jun 15, 2026

Fugu Ultraprice, context, benchmarks and release details

Provisional: not enough results to rank yet 100% confidence, 1 of 1 expected sources in

57.9

SI Score

#71 of 142 ranked models

Input, per 1M tokens: not yet reported
Output, per 1M tokens: not yet reported
Context window: 1M
Max output: not yet reported
Released: Jun 15, 2026

How the score breaks down

Coding 77.9

Math —

Preference —

Reasoning 65.2

Weights: reasoning 30%, math 15%, coding 40%, preference 15%. Results use fixed 0–100 scales before averaging, and thin evidence is pulled toward 50. Method si-v3-retained-evidence-2, computed Oct 9, 2026, 06:15 UTC.

Around it on the leaderboard

69 GPT-5.5 Instant 58.3
70 MiniMax-M2.7 57.9
71 Fugu Ultra 57.9
72 MiniMax-M2.5 57.8
73 Grok 4.20 (Reasoning) 57.7

Full leaderboard

Benchmark results

4 benchmarks, 4 results

Each row shows the best published result. Where a model was tested at several settings, such as reasoning effort, open the row to see each one. Hover or tap a value for its source.

GPQA Diamondreasoning 95.5% 95.5

Humanity's Last Examreasoning 50% 50.0

SWE-bench Procoding 73.7% 73.7

Terminal-Benchcoding 82.1% 82.1

Normalization uses a fixed 0–100 scale for each unit, independent of other models. Compare evaluation conditions before reading a small gap as decisive. “Lab-reported” marks the provider's own published figure.

Details and sources

Open weights: No
License: not yet reported
Input modalities: text, image
First seen by SuperIndex: Oct 8, 2026
Coverage: 100% of expected source weight

Reported (1)

Official model cards via models.devOct 8, 2026

Awaiting (0)

Every expected source has reported for this model.

Confidence rises as pending sources publish. Some sources never cover some models, so confidence reaches 100% at 80% of expected weight.