Benchmark Almanac

Sakana kana-letter reading-order set

Fugu-Ultra (June 2026 paper) 77.6% tops its leaderboard
Not in model cards

Model recovers the reading order of 25 expert-annotated classical Japanese kana letters (chirashigaki). Scored by normalized edit distance.

Lab-created in-house eval (Sakana AI). Built because no public benchmark existed. No release link.

Made by
Sakana AI
Released
June 2026
Kind
Documents, charts and text in images
Level
Expert
Scored
Checked automatically
Answers
Short answer
Tasks
Kept private
5
Entries on its own leaderboard, 0 models we track

Fugu-Ultra (June 2026 paper) tops the leaderboard with 77.6%

Best score per entry from the benchmark's own leaderboard, read on November 12th, 2026. Where a model ran with several settings or harnesses, we keep its best. Names in gray aren't in our model list: fine-tunes, agent systems, products and older models. They don't count toward leaders.

  1. 1 Fugu-Ultra (June 2026 paper) 77.6%
  2. 2 Anonymous frontier Model A 64.2%
  3. 3 Fugu (June 2026 paper) 47.3%
  4. 4 Anonymous frontier Model B 44.9%
  5. 5 Seed heuristic 11.6%

Source: Official Sakana kana-letter reading-order set leaderboard

#EntryScoreSettingDateSource
1 Fugu-Ultra (June 2026 paper) 77.6% Beam search Official leaderboard
2 Anonymous frontier Model A 64.2% Beam search Official leaderboard
3 Fugu (June 2026 paper) 47.3% Beam search Official leaderboard
4 Anonymous frontier Model B 44.9% Beam search Official leaderboard
5 Seed heuristic 11.6% Beam search Official leaderboard

No lab model card reports it yet

We read the headline results of 522 launch posts from 52 labs, and none of them list this benchmark.

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