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Sakana

Sakana Fugu

Sakana Fugu is a reasoning model from Sakana. 8 benchmarks count toward its index, in 5 categories.

  • Closed weights
  • Reasoning
  • Input: text
  • Released 2026-06
RankedEnough results for an index.
IndexAll categories, out of 100.63.9±7.7Median 51.0
CoverageIndex weight that has results.80%
SpeedOutput tokens per second.—Median 67/s
First tokenSeconds to the first output token.—Median 1.3 s
Input / 1MUS dollars per 1M input tokens.—Median $0.60
Output / 1MUS dollars per 1M output tokens.—Median $2.55
ContextMaximum tokens in one request.1MMedian 262K
EloLMArena rating and rank.—Median 1422

Capabilities

Index per category, out of 100.
Out of 100
AgenticMulti-step tasks with tools.1 counted68.0—
CodingCode writing and repair.3 counted64.744 / 209
ReasoningLogic problems and puzzles.1 counted64.0—
MultimodalTasks with images and text.1 counted61.1—
KnowledgeFacts and expert knowledge.2 counted68.328 / 268
MultilingualTasks in many languages.None counted——
InstructionTasks with strict prompt rules.None counted——
MathMath problems.None counted——

Results

8 counted
BenchmarkThe benchmark name.ResultThe score from the source.PlacePlace among results on this benchmark.
Graduate-Level Google-Proof Q&AKnowledge95.5%2 / 141
GPQA Diamond · BenchLMKnowledge95.5%2 / 84
Scientific Code BenchmarkCoding60.1%1 / 35
LiveCodeBench v6Coding92.9%2 / 59
Humanity's Last Exam without toolsKnowledge47.2%11 / 53
MRCRv2Reasoning86.6%5 / 14
Terminal-Bench 2.1 · BenchLMAgentic80.2%35 / 86
CharXiv ReasoningMultimodal85.1%20 / 49
SWE-bench ProCoding59.0%36 / 83
LiveCodeBench ProCoding87.8%—

Sources

BenchLMCC BY-NC 4.0

History

5 releases
Index65.0 → 63.9
23 Oct 202612 Nov 2026

Questions

How good is Sakana Fugu?
Its index is 63.9 out of 100. That is place 54 of 283 ranked models.
What is Sakana Fugu best at?
Knowledge: 68.3 out of 100, place 28 of 268.
What is the context window of Sakana Fugu?
1M tokens.
Is Sakana Fugu open source?
No. Its weights are not published.
When was Sakana Fugu released?
June 2026.

Badge

Sakana Fugu on Inference360: place 54 of 283, index 63.9
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[![Sakana Fugu on Inference360: place 54 of 283, index 63.9](https://inference360.ai/badges/sakana-fugu.svg)](https://inference360.ai/models/sakana-fugu)

Compare with

Gemini 3.5 Flash64.2Sakana Fugu-Ultra66.3

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