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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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  2. Comparisons
  3. Sakana: Fugu Ultra vs GPT-4o

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

Sakana: Fugu Ultra vs GPT-4o benchmark

In this head-to-head showdown, GPT-4o is more budget-friendly at $10/1M 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-4o if you are optimizing for low latency, high throughput, and cost-efficient API deployment.
Share Analysis:Share:
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Executive Verdict Summary

GPT-4o holds empirical advantage (2 of 3 metrics)

Coding / SWESWE-bench
GPT-4oTop code solve rate
ReasoningGPQA / Live
GPT-4oTop logical accuracy
Best Value$/1M Tok
GPT-4oLowest API billing cost
Speed / TokTok/Sec
GPT-4oFastest stream rate

Verified Advantage Breakdown

3 benchmarks evaluated across capability, speed, and cost

Sakana: Fugu Ultra (1)GPT-4o (2)
Sakana: Fugu Ultra
1 of 3 Wins
✓Context window
GPT-4o
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-4o

Previous OpenAI flagship. Still a common compare baseline on legacy pages.

Elo 1,335In: $2.5 · Out: $10/1M
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-4o Wins

GPT-4o

$10 / 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-4o (8)
Sakana: Fugu Ultra: 1W (11%)Overall: GPT-4oGPT-4o: 8W (89%)
← Sakana: Fugu UltraGPT-4o →
🏆GPT-4o Leads(4/5)

Intelligence & Reasoning

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

Benchmark
Sakana: Fugu UltravsGPT-4o
Preference Elo
—vs1,335
Coding Elo
—vs—
SWE-bench
—vs54.8%
LiveBench
—vs54.2%
GPQA Diamond
—vs73.2%
Sakana: Fugu Ultra: 0WGPT-4o: 4W
🏆GPT-4o Leads(2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Benchmark
Sakana: Fugu UltravsGPT-4o
Output speed
—vs110 tok/s
Time to first token
—vs180 ms
Sakana: Fugu Ultra: 0WGPT-4o: 2W
🏆GPT-4o Leads(2/3)

Pricing & Capacity

Cost per million tokens and max context window length

Benchmark
Sakana: Fugu UltravsGPT-4o
Output price
$30/1Mvs$10/1M+$20/1M
Input price
$5/1Mvs$2.5/1M+$2.5/1M
Context window
1Mvs128k+872k
Sakana: Fugu Ultra: 1WGPT-4o: 2W

Side-by-Side Benchmark Matrix

Sakana: Fugu UltraGPT-4o
Preference Elo
Sakana: Fugu Ultra—
GPT-4o1,335
LiveBench
Sakana: Fugu Ultra—
GPT-4o54.2%
SWE-bench
Sakana: Fugu Ultra—
GPT-4o54.8%
GPQA Diamond
Sakana: Fugu Ultra—
GPT-4o73.2%
Time to first token
Sakana: Fugu Ultra—
GPT-4o180 ms
Output speed
Sakana: Fugu Ultra—
GPT-4o110 tok/s
Input priceGPT-4o +$2.5/1M
Sakana: Fugu Ultra$5/1M
GPT-4o$2.5/1M
Output priceGPT-4o +$20/1M
Sakana: Fugu Ultra$30/1M
GPT-4o$10/1M
Context windowSakana: Fugu Ultra +872k
Sakana: Fugu Ultra1M
GPT-4o128k
BenchmarkSakana: Fugu UltraGPT-4oAdvantage Delta
Preference Elo—
1,335
lmarena · Aug 17, 2026
—
LiveBench—
54.2%
livebench · Aug 17, 2026
—
SWE-bench—
54.8%
swebench · Aug 17, 2026
—
GPQA Diamond—
73.2%
seed-bootstrap · Aug 1, 2026
—
Time to first token—
180 ms
seed-bootstrap · Aug 1, 2026
—
Output speed—
110 tok/s
seed-bootstrap · Aug 1, 2026
—
Input price
$5/1M
openrouter · Aug 17, 2026
$2.5/1M
openrouter · Aug 17, 2026
+$2.5/1M
Output price
$30/1M
openrouter · Aug 17, 2026
$10/1M
openrouter · Aug 17, 2026
+$20/1M
Context window
1M
openrouter · Aug 17, 2026
128k
openrouter · Aug 17, 2026
+872k

Workload Cost & Savings Calculator

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

Save 62% with GPT-4o
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-4o$237.50 / mo
In: $87.5Out: $150
Estimated Cost Delta

GPT-4o is estimated to save $387.50/month ($4,650/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    GPT-4o:Pick GPT-4o 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-4o

Lower output list price ($10/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGSakana: Fugu Ultra

Larger window (1M).

Screenshots / visionGPT-4o

GPT-4o is the side marked multimodal in the catalog.

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsinsufficient dataNeed SWE-bench on both sides.
High-volume chatGPT-4oLower output list price ($10/1M).
Voice / low-latency UIinsufficient dataNeed TTFT on both sides.
Long-document RAGSakana: Fugu UltraLarger window (1M).
Screenshots / visionGPT-4oGPT-4o is the side marked multimodal in the catalog.

Related Editorial Dispatches & Benchmark Notes

View all news
newsMay 13, 2024

GPT-4o stays as the 2024 compare anchor people still search

Deprecated for buying. Kept because “4o vs sonnet” is still a typed query.

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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-4o

Elo 1,335
SWE-bench54.8%
Speed (tok/s)110 tok/s
Input / 1M Tokens$2.5/1M
Output / 1M Tokens$10/1M

Frequently Asked Questions

Which is better overall, Sakana: Fugu Ultra or GPT-4o?
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-4o?
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-4o output tokens are $10/1M versus $30/1M. Input prices and retry rates still move the real bill.
Which is faster, Sakana: Fugu Ultra or GPT-4o?
We do not have TTFT for both models.
Which has the larger context window?
Sakana: Fugu Ultra accepts 1M tokens versus 128k.
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-4o Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Related news

  • news · May 13, 2024

    GPT-4o stays as the 2024 compare anchor people still search

Similar Head-to-Head Comparisons

All Sakana: Fugu Ultra matchups →|All GPT-4o matchups →
GPT-4o vs GPT-4 Turbo (previous gpt-flagship)GPT-4o vs OpenAI: o1 (next gpt-flagship)GPT-5 vs GPT-4oGPT-4.5 Orion vs GPT-4oGPT-5.6 Sol vs GPT-4oGPT-5.6 Terra vs GPT-4o