# Inkling-Small vs Sakana Fugu-Ultra

> Side-by-side benchmark comparison for Inkling-Small and Sakana Fugu-Ultra across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/inkling-small-vs-sakana-fugu-ultra
- Last updated: September 10, 2026

- Shared sourced benchmarks: 8
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

Pick Sakana Fugu-Ultra if you want the stronger benchmark profile. Inkling-Small only makes more sense when its price, context window, or workload-specific category wins matter more than the overall score.

## Summary

- Sakana Fugu-Ultra leads overall 77 to 59.25.
- The clearest category separation is in reasoning, where the averages are 42.7 for Inkling-Small and 77.9 for Sakana Fugu-Ultra.
- The biggest single benchmark swing is HLE w/o tools in Knowledge, with scores of 31.6% and 50%.
- Sakana Fugu-Ultra is the cheaper option on output tokens, which matters if you expect large responses or heavy interactive use.

## Model Snapshot

| Property | Inkling-Small | Sakana Fugu-Ultra |
|----------|----------|----------|
| Creator | Thinking Machines Lab | Sakana AI |
| Type | Open Weight | Proprietary |
| Reasoning | Hybrid | Reasoning |
| Context | 1M | 1M |
| Overall Score | 59.25 | null |
| Benchmarks Covered | 25 | 11 |
| Pricing (input/output) | $0.58 / $1.44 | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Agentic

- Winner: Coming soon
- Inkling-Small public-lane score: 36.9 (Supported · #128/152)
- Sakana Fugu-Ultra public-lane score: Coming soon

| Benchmark | Inkling-Small | Sakana Fugu-Ultra | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.0 | 64.7% | 82.1% | Sakana Fugu-Ultra |
| BrowseComp | 77.4% | Coming soon | Coming soon |
| MCP Atlas | 79.6% | Coming soon | Coming soon |
| Toolathlon-Verified | 54.4% | Coming soon | Coming soon |
| Terminal-Bench 2.1 (Vals) | 55.1% | Coming soon | Coming soon |

### Coding

- Winner: Coming soon
- Inkling-Small public-lane score: 43.8 (Supported · #97/151)
- Sakana Fugu-Ultra public-lane score: Coming soon

| Benchmark | Inkling-Small | Sakana Fugu-Ultra | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Verified | 80.2% | Coming soon | Coming soon |
| SWE-bench Pro | 55.9% | 73.7% | Sakana Fugu-Ultra |
| Terminal-Bench 2.0 | 64.7% | 82.1% | Sakana Fugu-Ultra |
| SciCode | 48.7% | 58.7% | Sakana Fugu-Ultra |
| LiveCodeBench (Vals) | 85.9% | Coming soon | Coming soon |
| SWE-bench (Vals) | 82.2% | Coming soon | Coming soon |
| LiveCodeBench v6 | Coming soon | 93.2% | Coming soon |
| LiveCodeBench Pro | Coming soon | 90.8% | Coming soon |

### Multimodal & Grounded

- Winner: Coming soon
- Inkling-Small public-lane score: 48.8 (#39/48)
- Sakana Fugu-Ultra public-lane score: 72.8 (Unranked · 1 rankable row)

| Benchmark | Inkling-Small | Sakana Fugu-Ultra | Winner |
|-----------|-----------|-----------|--------|
| MMMU-Pro | 74% | Coming soon | Coming soon |
| CharXiv | 81.3% | 86.6% | Sakana Fugu-Ultra |
| CharXiv w/o tools | 77.4% | Coming soon | Coming soon |

### Reasoning

- Winner: Coming soon
- Inkling-Small public-lane score: 42.7 (Unranked · 3 rankable rows)
- Sakana Fugu-Ultra public-lane score: 77.9 (Unranked · 1 rankable row)

| Benchmark | Inkling-Small | Sakana Fugu-Ultra | Winner |
|-----------|-----------|-----------|--------|
| ARC-AGI-2 | 40.1% | Coming soon | Coming soon |
| CritPt | 8.3% | Coming soon | Coming soon |
| MRCRv2 | Coming soon | 93.6% | Coming soon |

### Knowledge

- Winner: Coming soon
- Inkling-Small public-lane score: 56.5 (Supported · #46/183)
- Sakana Fugu-Ultra public-lane score: Coming soon

| Benchmark | Inkling-Small | Sakana Fugu-Ultra | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 89.5% | 95.5% | Sakana Fugu-Ultra |
| GPQA-D | 89.5% | 95.5% | Sakana Fugu-Ultra |
| HLE | 47.8% | Coming soon | Coming soon |
| HLE w/o tools | 31.6% | 50% | Sakana Fugu-Ultra |
| GPQA Diamond (Vals) | 83.6% | Coming soon | Coming soon |
| MMLU-Pro (Vals) | 85.6% | Coming soon | Coming soon |

### Instruction Following

- Winner: Coming soon
- Inkling-Small public-lane score: 89.6 (#25/123)
- Sakana Fugu-Ultra public-lane score: Coming soon

| Benchmark | Inkling-Small | Sakana Fugu-Ultra | Winner |
|-----------|-----------|-----------|--------|
| IFBench | 82.2% | Coming soon | Coming soon |

### Mathematics

- Winner: Coming soon
- Inkling-Small public-lane score: 76.9 (Unranked · 2 rankable rows)
- Sakana Fugu-Ultra public-lane score: Coming soon

| Benchmark | Inkling-Small | Sakana Fugu-Ultra | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | 95.5% | Coming soon | Coming soon |
| HMMT Feb 2026 | 90.2% | Coming soon | Coming soon |

## FAQ

### Which is better overall, Inkling-Small or Sakana Fugu-Ultra?

Sakana Fugu-Ultra is ahead overall on BenchLM right now.

### Where is the biggest gap between Inkling-Small and Sakana Fugu-Ultra?

The widest category gap is in reasoning, where the averages are 42.7 for Inkling-Small and 77.9 for Sakana Fugu-Ultra.

### How many benchmarks does Inkling-Small cover on BenchLM?

Inkling-Small currently has 25 sourced benchmark scores on BenchLM.

### How many benchmarks does Sakana Fugu-Ultra cover on BenchLM?

Sakana Fugu-Ultra currently has 11 sourced benchmark scores on BenchLM.

## Related Comparisons

- [Inkling-Small vs Inkling](/compare/inkling-vs-inkling-small)
- [Sakana Fugu-Ultra vs Inkling](/compare/inkling-vs-sakana-fugu-ultra)
- [Inkling-Small vs Sakana Fugu](/compare/inkling-small-vs-sakana-fugu)
- [Sakana Fugu-Ultra vs Sakana Fugu](/compare/sakana-fugu-vs-sakana-fugu-ultra)

## Explore More

- [Inkling-Small profile](/models/inkling-small)
- [Sakana Fugu-Ultra profile](/models/sakana-fugu-ultra)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)