# Sakana Fugu-Ultra vs ZAYA1-8B

> Side-by-side benchmark comparison for Sakana Fugu-Ultra and ZAYA1-8B across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/sakana-fugu-ultra-vs-zaya1-8b
- Last updated: September 28, 2026

- Shared sourced benchmarks: 3
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.7

## Quick Verdict

Evidence is too thin for a benchmark verdict: Sakana Fugu-Ultra and ZAYA1-8B share only 3 sourced benchmark rows.

## Summary

- Only 3 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.
- ZAYA1-8B has the lower published output-token price.
- Sakana Fugu-Ultra has the larger published context window at 1M.

## Model Snapshot

| Property | Sakana Fugu-Ultra | ZAYA1-8B |
|----------|----------|----------|
| Creator | Sakana AI | Zyphra |
| Type | Proprietary | Open Weight |
| Reasoning | Reasoning | Reasoning |
| Context | 1M | 131K |
| Independent public score (not head-to-head) | null | 30.83 |
| Benchmarks Covered | 11 | 11 |
| Pricing (input/output) | Pricing unavailable / Pricing unavailable | $0.00 / $0.00 |

## Category Breakdown

### Agentic

- Winner: Insufficient shared evidence
- Sakana Fugu-Ultra public-lane score: Coming soon
- ZAYA1-8B public-lane score: Coming soon

| Benchmark | Sakana Fugu-Ultra | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| Terminal-Bench 2.1 | 82.1% | Coming soon | Coming soon |
| BFCL v4 | Coming soon | 39.2% | Coming soon |

### Coding

- Winner: Insufficient shared evidence
- Sakana Fugu-Ultra public-lane score: Coming soon
- ZAYA1-8B public-lane score: Coming soon

| Benchmark | Sakana Fugu-Ultra | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| SWE-bench Pro | 73.7% | Coming soon | Coming soon |
| Terminal-Bench 2.1 | 82.1% | Coming soon | Coming soon |
| LiveCodeBench v6 | 93.2% | 65.8% | Sakana Fugu-Ultra |
| LiveCodeBench Pro | 90.8% | Coming soon | Coming soon |
| SciCode | 58.7% | Coming soon | Coming soon |

### Reasoning

- Winner: Insufficient shared evidence
- Sakana Fugu-Ultra public-lane score: 79.1 (Unranked · 1 rankable row)
- ZAYA1-8B public-lane score: Coming soon

| Benchmark | Sakana Fugu-Ultra | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| MRCRv2 | 93.6% | Coming soon | Coming soon |

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- Sakana Fugu-Ultra public-lane score: 73.6 (Unranked · 1 rankable row)
- ZAYA1-8B public-lane score: Coming soon

| Benchmark | Sakana Fugu-Ultra | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| CharXiv | 86.6% | Coming soon | Coming soon |

### Knowledge

- Winner: Insufficient shared evidence
- Sakana Fugu-Ultra public-lane score: Coming soon
- ZAYA1-8B public-lane score: 32.4 (Estimated · #129/168)

| Benchmark | Sakana Fugu-Ultra | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| GPQA | 95.5% | 71% | Sakana Fugu-Ultra |
| GPQA-D | 95.5% | 71.0% | Sakana Fugu-Ultra |
| HLE w/o tools | 50% | Coming soon | Coming soon |
| MMLU-Pro | Coming soon | 74.2% | Coming soon |

### Instruction Following

- Winner: Insufficient shared evidence
- Sakana Fugu-Ultra public-lane score: Coming soon
- ZAYA1-8B public-lane score: 23.5 (#121/124)

| Benchmark | Sakana Fugu-Ultra | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| IFEval | Coming soon | 85.6% | Coming soon |
| IFBench | Coming soon | 52.6% | Coming soon |

### Mathematics

- Winner: Insufficient shared evidence
- Sakana Fugu-Ultra public-lane score: Coming soon
- ZAYA1-8B public-lane score: 61.3 (Unranked · 4 rankable rows)

| Benchmark | Sakana Fugu-Ultra | ZAYA1-8B | Winner |
|-----------|-----------|-----------|--------|
| AIME26 | Coming soon | 89.1% | Coming soon |
| HMMT Feb 2026 | Coming soon | 71.6% | Coming soon |
| IMOAnswerBench | Coming soon | 59.3% | Coming soon |
| Apex | Coming soon | 32.2% | Coming soon |

## FAQ

### Is there enough evidence to pick between Sakana Fugu-Ultra and ZAYA1-8B?

Not yet. The models share only 3 sourced benchmark rows, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Sakana Fugu-Ultra vs Sakana Fugu](/compare/sakana-fugu-vs-sakana-fugu-ultra)
- [ZAYA1-8B vs Sakana Fugu](/compare/sakana-fugu-vs-zaya1-8b)
- [Sakana Fugu-Ultra vs Fugu Cyber](/compare/sakana-fugu-cyber-vs-sakana-fugu-ultra)
- [ZAYA1-8B vs Fugu Cyber](/compare/sakana-fugu-cyber-vs-zaya1-8b)

## Explore More

- [Sakana Fugu-Ultra profile](/models/sakana-fugu-ultra)
- [ZAYA1-8B profile](/models/zaya1-8b)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)