# GPT-5 (medium) vs Sakana Fugu-Ultra v1.1

> Side-by-side benchmark comparison for GPT-5 (medium) and Sakana Fugu-Ultra v1.1 across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/gpt-5-medium-vs-sakana-fugu-ultra-v1-1
- Last updated: September 4, 2026

- Shared sourced benchmarks: 0
- HTML indexing: indexable
- Ranking lane: BenchAlign v5

## Quick Verdict

No benchmark verdict yet: there is no shared sourced benchmark row for GPT-5 (medium) and Sakana Fugu-Ultra v1.1.

## Summary

- GPT-5 (medium) and Sakana Fugu-Ultra v1.1 do not currently share a sourced benchmark row. The mirror therefore compares metadata, pricing, context windows, and each model's separately reported coverage without naming a benchmark winner.

## Model Snapshot

| Property | GPT-5 (medium) | Sakana Fugu-Ultra v1.1 |
|----------|----------|----------|
| Creator | OpenAI | Sakana AI |
| Type | Proprietary | Proprietary |
| Reasoning | Reasoning | Reasoning |
| Context | 128K | 1M |
| Independent public score (not head-to-head) | 52.81 | null |
| Benchmarks Covered | 0 | 0 |
| Pricing (input/output) | Pricing unavailable / Pricing unavailable | $5.00 / $30.00 |

## Category Breakdown

### Coding

- Winner: Insufficient shared evidence
- GPT-5 (medium) public-lane score: 50.6 (Estimated · #69/183)
- Sakana Fugu-Ultra v1.1 public-lane score: Coming soon

### Multimodal & Grounded

- Winner: Insufficient shared evidence
- GPT-5 (medium) public-lane score: 69.4 (Unranked · 1 rankable row)
- Sakana Fugu-Ultra v1.1 public-lane score: Coming soon

### Reasoning

- Winner: Insufficient shared evidence
- GPT-5 (medium) public-lane score: 75.9 (Unranked · 2 rankable rows)
- Sakana Fugu-Ultra v1.1 public-lane score: Coming soon

### Knowledge

- Winner: Insufficient shared evidence
- GPT-5 (medium) public-lane score: 52.7 (Estimated · #72/181)
- Sakana Fugu-Ultra v1.1 public-lane score: Coming soon

### Instruction Following

- Winner: Insufficient shared evidence
- GPT-5 (medium) public-lane score: 86.1 (#37/120)
- Sakana Fugu-Ultra v1.1 public-lane score: Coming soon

## FAQ

### Can I compare GPT-5 (medium) and Sakana Fugu-Ultra v1.1 on BenchLM yet?

Not fully yet. BenchLM is tracking both models, but sourced benchmark coverage is still incomplete for a fair score-level comparison.

### Why does this page show "coming soon" values?

BenchLM only calls winners when public benchmark coverage is available on both sides of the comparison.

## Related Comparisons

- [GPT-5 (medium) vs GPT-5 (high)](/compare/gpt-5-high-vs-gpt-5-medium)
- [Sakana Fugu-Ultra v1.1 vs GPT-5 (high)](/compare/gpt-5-high-vs-sakana-fugu-ultra-v1-1)
- [GPT-5 (medium) vs GPT-5 mini](/compare/gpt-5-medium-vs-gpt-5-mini)
- [Sakana Fugu-Ultra v1.1 vs GPT-5 mini](/compare/gpt-5-mini-vs-sakana-fugu-ultra-v1-1)

## Explore More

- [GPT-5 (medium) profile](/models/gpt-5-medium)
- [Sakana Fugu-Ultra v1.1 profile](/models/sakana-fugu-ultra-v1-1)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)