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© 2026 CompareLLM. Public benchmark data aggregated from Arena Elo, LiveBench, SWE-bench & OpenRouter.

Every score has a dated snapshot.

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  3. Sakana: Fugu Ultra vs GPT-5 mini

Pairwise benchmark snapshot · Aug 17, 2026noindex (thin pair)

Sakana: Fugu Ultra vs GPT-5 mini benchmark

In this head-to-head showdown, GPT-5 mini is more budget-friendly at $2/1M per 1M output tokens. Review the complete breakdown below to determine which model best fits your performance and budget requirements.

Executive Comparison Verdict

Bottom Line: Choose Sakana: Fugu Ultra if your priority is peak reasoning, complex code generation, and top preference Elo. Choose GPT-5 mini if you are optimizing for low latency, high throughput, and cost-efficient API deployment.
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Executive Verdict Summary

GPT-5 mini holds empirical advantage (2 of 3 metrics)

Coding / SWESWE-bench
GPT-5 miniTop code solve rate
ReasoningGPQA / Live
GPT-5 miniTop logical accuracy
Best Value$/1M Tok
GPT-5 miniLowest API billing cost
Speed / TokTok/Sec
GPT-5 miniFastest stream rate

Verified Advantage Breakdown

3 benchmarks evaluated across capability, speed, and cost

Sakana: Fugu Ultra (1)GPT-5 mini (2)
Sakana: Fugu Ultra
1 of 3 Wins
✓Context window
GPT-5 mini
2 of 3 Wins
✓Input price✓Output price
sakana
Leads 1 of 3
Sakana: Fugu Ultra

Auto-discovered from OpenRouter (sakana/fugu-ultra). Preview until a second source matches.

In: $5 · Out: $30/1M
OpenAI
Leads 2 of 3
GPT-5 mini

Cost-efficient GPT-5 distill for high-volume agents.

Mini DistillElo 1,410In: $0.25 · Out: $2/1M
Top Rival Showdowns for Sakana: Fugu Ultra
All Matchups
Compare vs:vs Claude Opus 4.5vs GPT-5vs Gemini 3 Provs Grok 4.6vs DeepSeek V4 Pro
Preference Leader

No shared data

Single model data

Throughput Leader

No shared data

No latency data

Value per Dollar LeaderGPT-5 mini Wins

GPT-5 mini

$2 / 1M output

Capability Percentiles

Relative percentile scores computed across all active models in the benchmark catalog.

Multi-Dimensional Capability Radar

Leaders Matchup Capability Radar

Comparing top standard models across 6 key capability dimensions. Tap any spoke or dot to inspect.

Tap any node to inspect
0–100 %ile

Overall Matchup Breakdown

Category wins across reasoning intelligence, generation speed, and token cost.

Sakana: Fugu Ultra (1)vsGPT-5 mini (9)
Sakana: Fugu Ultra: 1W (10%)Overall: GPT-5 miniGPT-5 mini: 9W (90%)
← Sakana: Fugu UltraGPT-5 mini →
🏆GPT-5 mini Leads(5/5)

Intelligence & Reasoning

Preference Elo, Coding proficiency, SWE-bench & LiveBench accuracy

Benchmark
Sakana: Fugu UltravsGPT-5 mini
Preference Elo
—vs1,410
Coding Elo
—vs1,395
SWE-bench
—vs52.4%
LiveBench
—vs61.2%
GPQA Diamond
—vs72%
Sakana: Fugu Ultra: 0WGPT-5 mini: 5W
🏆GPT-5 mini Leads(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
Sakana: Fugu UltravsGPT-5 mini
Output speed
—vs155 tok/s
Time to first token
—vs140 ms
Sakana: Fugu Ultra: 0WGPT-5 mini: 2W
🏆GPT-5 mini Leads(2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
Sakana: Fugu UltravsGPT-5 mini
Output price
$30/1Mvs$2/1M+$28/1M
Input price
$5/1Mvs$0.25/1M+$4.75/1M
Context window
1Mvs400k+600k
Sakana: Fugu Ultra: 1WGPT-5 mini: 2W

Side-by-Side Benchmark Matrix

Sakana: Fugu UltraGPT-5 mini
Preference Elo
Sakana: Fugu Ultra—
GPT-5 mini1,410
Coding Elo
Sakana: Fugu Ultra—
GPT-5 mini1,395
LiveBench
Sakana: Fugu Ultra—
GPT-5 mini61.2%
SWE-bench
Sakana: Fugu Ultra—
GPT-5 mini52.4%
GPQA Diamond
Sakana: Fugu Ultra—
GPT-5 mini72%
Time to first token
Sakana: Fugu Ultra—
GPT-5 mini140 ms
Output speed
Sakana: Fugu Ultra—
GPT-5 mini155 tok/s
Input priceGPT-5 mini +$4.75/1M
Sakana: Fugu Ultra$5/1M
GPT-5 mini$0.25/1M
Output priceGPT-5 mini +$28/1M
Sakana: Fugu Ultra$30/1M
GPT-5 mini$2/1M
Context windowSakana: Fugu Ultra +600k
Sakana: Fugu Ultra1M
GPT-5 mini400k
BenchmarkSakana: Fugu UltraGPT-5 miniAdvantage Delta
Preference Elo—
1,410
lmarena · Aug 17, 2026
—
Coding Elo—
1,395
lmarena · Aug 17, 2026
—
LiveBench—
61.2%
livebench · Aug 17, 2026
—
SWE-bench—
52.4%
swebench · Aug 17, 2026
—
GPQA Diamond—
72%
seed-bootstrap · Aug 1, 2026
—
Time to first token—
140 ms
seed-bootstrap · Aug 1, 2026
—
Output speed—
155 tok/s
seed-bootstrap · Aug 1, 2026
—
Input price
$5/1M
openrouter · Aug 17, 2026
$0.25/1M
openrouter · Aug 17, 2026
+$4.75/1M
Output price
$30/1M
openrouter · Aug 17, 2026
$2/1M
openrouter · Aug 17, 2026
+$28/1M
Context window
1M
openrouter · Aug 17, 2026
400k
openrouter · Aug 17, 2026
+600k

Workload Cost & Savings Calculator

Simulate monthly production API costs in USD (US Dollar).

Save 94% with GPT-5 mini
Monthly Volume50M tokens/mo
Quick Presets:
Token Ratio (In vs Out)70% In / 30% Out
RAG / Search (10% out)Coding / Chat (50% out)
Sakana: Fugu Ultra$625.00 / mo
In: $175Out: $450
GPT-5 mini$38.75 / mo
In: $8.75Out: $30
Estimated Cost Delta

GPT-5 mini is estimated to save $586.25/month ($7,035/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    GPT-5 mini:Pick GPT-5 mini when you are optimizing output cost.
  • 2
    Sakana: Fugu Ultra:Pick Sakana: Fugu Ultra for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatGPT-5 mini

Lower output list price ($2/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGSakana: Fugu Ultra

Larger window (1M).

Screenshots / visionGPT-5 mini

GPT-5 mini is the side marked multimodal in the catalog.

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsinsufficient dataNeed SWE-bench on both sides.
High-volume chatGPT-5 miniLower output list price ($2/1M).
Voice / low-latency UIinsufficient dataNeed TTFT on both sides.
Long-document RAGSakana: Fugu UltraLarger window (1M).
Screenshots / visionGPT-5 miniGPT-5 mini is the side marked multimodal in the catalog.

Related Editorial Dispatches & Benchmark Notes

View all news
launchAug 8, 2025

GPT-5 mini: the 2025 distill still useful as a cheap OpenAI baseline

High-volume agents that cannot pay Sol. Compare to Luna before you assume the new cheap SKU wins.

Cast Your Matchup Vote

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CompareLLM AI Matrix

Verified Head-to-Head Telemetry

LIVE BENCHMARK
VS
sakana

Sakana: Fugu Ultra

Elo n/a
SWE-bench—
Speed (tok/s)1M
Input / 1M Tokens$5/1M
Output / 1M Tokens$30/1M
OpenAI

GPT-5 mini

Elo 1,410
SWE-bench52.4%
Speed (tok/s)155 tok/s
Input / 1M Tokens$0.25/1M
Output / 1M Tokens$2/1M

Frequently Asked Questions

Which is better overall, Sakana: Fugu Ultra or GPT-5 mini?
We do not have preference Elo for both models, so we do not declare an overall winner. Compare the metrics that exist.
Which is better at coding, Sakana: Fugu Ultra or GPT-5 mini?
SWE-bench is missing for at least one model, so we do not rank coding from a single number.
Which is cheaper to run in production?
GPT-5 mini output tokens are $2/1M versus $30/1M. Input prices and retry rates still move the real bill.
Which is faster, Sakana: Fugu Ultra or GPT-5 mini?
We do not have TTFT for both models.
Which has the larger context window?
Sakana: Fugu Ultra accepts 1M tokens versus 400k.
Can I self-host either model?
Neither model is marked open-weights here. You are comparing hosted APIs.
Are these scores from CompareLLM’s own evals?
No. V1 aggregates public leaderboards (and optional first-party latency pings). Each cell names its source and date. Read /methodology.
What does preference Elo mean on this page?
Preference Elo is a crowd vote from LMArena / Arena. People see two hidden answers and pick the one they like more. The model that wins more often gets a higher Elo. That means people preferred it — not that it passed a school test. It is not SWE-bench, not accuracy, and not a number we invent. Sakana: Fugu Ultra and GPT-5 mini Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Related news

  • launch · Aug 8, 2025

    GPT-5 mini: the 2025 distill still useful as a cheap OpenAI baseline

Similar Head-to-Head Comparisons

All Sakana: Fugu Ultra matchups →|All GPT-5 mini matchups →
GPT-5 mini vs OpenAI: o3 Mini (previous gpt-mini)GPT-5 mini vs GPT-5.6 Luna (next gpt-mini)GPT-5 vs GPT-5 miniGPT-4.5 Orion vs GPT-5 miniGPT-5.6 Sol vs GPT-5 miniGPT-5.6 Terra vs GPT-5 mini