Model profile
Sakana Fugu-Ultra v1.1
Evidence coverage
0 of 369 tracked benchmarks are published. 0 are verified and 0 provisional. 0 of 8 categories are measured.
- Published / tracked
- 0 / 369
- Verified
- 0
- Provisional
- 0
- Categories with evidence
- 0 / 8
Evidence by category
- Agentic0 benchmarksNot measured
- Coding0 benchmarksNot measured
- Reasoning0 benchmarksNot measured
- Knowledge0 benchmarksNot measured
- Math0 benchmarksNot measured
- Multilingual0 benchmarksNot measured
- Multimodal0 benchmarksNot measured
- Inst. Following0 benchmarksNot measured
BenchLM is tracking Sakana Fugu-Ultra v1.1, but sourced benchmark results are not published on the site yet. This page currently shows the model metadata we can verify now, and score-level benchmark coverage will appear once public evaluations land.
Sakana Fugu-Ultra v1.1 is a proprietary model with a 1M token context window. It uses explicit chain-of-thought reasoning, which typically improves performance on math and complex reasoning tasks at the cost of higher latency and token usage.
Sakana Fugu-Ultra v1.1 sits inside the Sakana Fugu family alongside Sakana Fugu, Sakana Fugu-Ultra, Fugu Cyber. BenchLM links it directly to Sakana Fugu-Ultra as the earlier related model in that lineage. This profile does not yet have sourced benchmarks on BenchLM, so the benchmark sections below are intentionally marked as coming soon.
Peer position
Exact provisional scores and ranks for the closest listed peers. A score can appear before a model clears the evidence threshold for a rank, so equal scores can have different rank states.
Range 77.44–85.88
- Claude Opus 5AnthropicCompare#185.88Claude Opus 5 is #1 with a score of 85.88.
- Claude Mythos 5AnthropicCompare#283.01Claude Mythos 5 is #2 with a score of 83.01.
- Claude Fable 5AnthropicCompare#382.76Claude Fable 5 is #3 with a score of 82.76.
- GPT-5.6 SolOpenAICompare#481.46GPT-5.6 Sol is #4 with a score of 81.46.
- Kimi K3Moonshot AICompare#579.98Kimi K3 is #5 with a score of 79.98.
- Claude Opus 4.8AnthropicCompare#677.44Claude Opus 4.8 is #6 with a score of 77.44.
- Sakana Fugu-Ultra v1.1Current modelSakana AIUnrankedNot measuredSakana Fugu-Ultra v1.1 is Unranked with a score of Not measured.
Benchmark data coming soon
BenchLM has created this model profile, but no sourced benchmark rows are published here yet. Category charts, rankings, and score tables will appear after public evaluations are available and attached to source records.
Category evidence
Scores and ranks appear only where this model has published benchmark evidence. Categories without displayable source records remain not measured.
| Category | Score | Rank | Percentile | Weight | Benchmarks | Evidence |
|---|---|---|---|---|---|---|
| AgenticWeight 22%0 benchmarksNot measured | Not measured | Not ranked | Not available | 22% | 0 benchmarks | Not measured |
| CodingWeight 20%0 benchmarksNot measured | Not measured | Not ranked | Not available | 20% | 0 benchmarks | Not measured |
| ReasoningWeight 17%0 benchmarksNot measured | Not measured | Not ranked | Not available | 17% | 0 benchmarks | Not measured |
| KnowledgeWeight 12%0 benchmarksNot measured | Not measured | Not ranked | Not available | 12% | 0 benchmarks | Not measured |
| MathWeight 5%0 benchmarksNot measured | Not measured | Not ranked | Not available | 5% | 0 benchmarks | Not measured |
| MultilingualWeight 7%0 benchmarksNot measured | Not measured | Not ranked | Not available | 7% | 0 benchmarks | Not measured |
| MultimodalWeight 12%0 benchmarksNot measured | Not measured | Not ranked | Not available | 12% | 0 benchmarks | Not measured |
| Inst. FollowingWeight 5%0 benchmarksNot measured | Not measured | Not ranked | Not available | 5% | 0 benchmarks | Not measured |
Sakana Fugu Family
ultra · Ultra v1.1
Canonical Entry
Sakana FuguRelated Earlier Model
Sakana Fugu-UltraFrequently Asked Questions
How does Sakana Fugu-Ultra v1.1 perform overall in AI benchmarks?
We are tracking Sakana Fugu-Ultra v1.1, but sourced benchmark coverage is still coming soon. The profile lists only the model metadata that has a verified public source.
Which sibling models are related to Sakana Fugu-Ultra v1.1?
Sakana Fugu-Ultra v1.1 belongs to the Sakana Fugu family. Related variants on BenchLM include Sakana Fugu, Sakana Fugu-Ultra, Fugu Cyber.
Does Sakana Fugu-Ultra v1.1 have full benchmark coverage on BenchLM?
Not yet. Sakana Fugu-Ultra v1.1 currently has 0 published benchmark scores out of the 369 benchmarks BenchLM tracks. BenchLM only exposes non-generated public benchmark rows, so missing categories stay blank until a sourced evaluation is available.
What is the context window size of Sakana Fugu-Ultra v1.1?
Sakana Fugu-Ultra v1.1 has a published context window of 1M, which determines how much text it can process in a single interaction.