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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 Kimi K3

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

Sakana: Fugu Ultra vs Kimi K3 benchmark

In this head-to-head showdown, Kimi K3 is more budget-friendly at $15/1M 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 Kimi K3 if you are optimizing for low latency, high throughput, and cost-efficient API deployment.
Share Analysis:
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sakana
Sakana: Fugu Ultra

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

$30/1M out
Moonshot
Kimi K3

Moonshot AI frontier flagship reasoning and agent swarm model with 256k context and top-tier SWE-bench coding capability.

Elo 1,528$15/1M out

Kimi K3 Thinking Depth & Cost Scaler

Simulate accuracy gains vs added response time & token cost

Mode: Medium (Deep Reasoning)

Reasoning models “think before answering” by generating internal reasoning tokens. Higher effort improves math, coding, and logic accuracy, but increases response delay and token costs.

Thinking Delay
290 ms
Standard speed
Reasoning Depth
~2,500
Internal tokens
Cost / 1k Calls
$43.50
7.3× standard bill
Accuracy Boost
+5.5% accuracy
STEM & SWE-bench
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 Leader

Kimi K3

$15 / 1M output

Capability Percentiles

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

Capability Matchup Radar

Multi-Dimensional Capability Radar

Each spoke is a skill. Farther from the center is better (0–100th percentile). Tap any dot to inspect details.

Tap any node to inspect
Percentile 0–100
Dimensional AdvantageKimi K3 6/6
Head-to-Head Comparison

Overall Matchup Breakdown

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

Sakana: Fugu Ultra (0)vsKimi K3 (10)
Sakana: Fugu Ultra: 0W (0%)Overall: Kimi K3Kimi K3: 10W (100%)
← Sakana: Fugu UltraKimi K3 →
Kimi K3 (5/5)

Intelligence & Reasoning

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

Preference Elo
—vs1,528
Coding Elo
—vs1,535
SWE-bench
—vs73.8%
LiveBench
—vs69.5%
GPQA Diamond
—vs88.4%
Sakana: Fugu Ultra: 0WKimi K3: 5W
Kimi K3 (2/2)

Speed & Latency

Generation throughput and time to first token responsiveness

Output speed
—vs68 tok/s
Time to first token
—vs290 ms
Sakana: Fugu Ultra: 0WKimi K3: 2W
Kimi K3 (3/3)

Pricing & Capacity

Cost per million tokens and max context window length

Output price
$30/1Mvs$15/1M
Input price
$5/1Mvs$3/1M
Context window
1Mvs1M
Sakana: Fugu Ultra: 0WKimi K3: 3W

Side-by-Side Benchmark Matrix

Preference Elo
Sakana: Fugu Ultra—
Kimi K31,528
lmarena · Aug 17, 2026
Coding Elo
Sakana: Fugu Ultra—
Kimi K31,535
lmarena · Aug 17, 2026
LiveBench
Sakana: Fugu Ultra—
Kimi K369.5%
livebench · Aug 17, 2026
SWE-bench
Sakana: Fugu Ultra—
Kimi K373.8%
swebench · Aug 17, 2026
GPQA Diamond
Sakana: Fugu Ultra—
Kimi K388.4%
seed-bootstrap · Aug 1, 2026
Time to first token
Sakana: Fugu Ultra—
Kimi K3290 ms
seed-bootstrap · Aug 1, 2026
Output speed
Sakana: Fugu Ultra—
Kimi K368 tok/s
seed-bootstrap · Aug 1, 2026
Input priceKimi K3 (+$2/1M)
Sakana: Fugu Ultra$5/1M
openrouter · Aug 17, 2026
Kimi K3$3/1M
openrouter · Aug 17, 2026
Output priceKimi K3 (+$15/1M)
Sakana: Fugu Ultra$30/1M
openrouter · Aug 17, 2026
Kimi K3$15/1M
openrouter · Aug 17, 2026
Context windowKimi K3 (+49k)
Sakana: Fugu Ultra1M
openrouter · Aug 17, 2026
Kimi K31M
openrouter · Aug 17, 2026
BenchmarkSakana: Fugu UltraKimi K3Advantage Delta
Preference Elo—
1,528
lmarena · Aug 17, 2026
—
Coding Elo—
1,535
lmarena · Aug 17, 2026
—
LiveBench—
69.5%
livebench · Aug 17, 2026
—
SWE-bench—
73.8%
swebench · Aug 17, 2026
—
GPQA Diamond—
88.4%
seed-bootstrap · Aug 1, 2026
—
Time to first token—
290 ms
seed-bootstrap · Aug 1, 2026
—
Output speed—
68 tok/s
seed-bootstrap · Aug 1, 2026
—
Input price
$5/1M
openrouter · Aug 17, 2026
$3/1M
openrouter · Aug 17, 2026
Kimi K3 (+$2/1M)
Output price
$30/1M
openrouter · Aug 17, 2026
$15/1M
openrouter · Aug 17, 2026
Kimi K3 (+$15/1M)
Context window
1M
openrouter · Aug 17, 2026
1M
openrouter · Aug 17, 2026
Kimi K3 (+49k)
Interactive Simulator (USD)

Workload Cost & Savings Calculator

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

Save up to 47% with Kimi K3
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
Kimi K3$330.00 / mo
In: $105Out: $225
Estimated Cost Delta

Kimi K3 is estimated to save $295.00/month ($3,540/year).

Based on 50M tokens (30% gen)

Key Selection Recommendations

  • 1
    Kimi K3:Pick Kimi K3 when you are optimizing output cost.
  • 2
    Kimi K3:Pick Kimi K3 for million-token RAG or long-document jobs.

Recommended Workload Routing

Repo / coding agentsinsufficient data

Need SWE-bench on both sides.

High-volume chatKimi K3

Lower output list price ($15/1M).

Voice / low-latency UIinsufficient data

Need TTFT on both sides.

Long-document RAGKimi K3

Larger window (1M).

Screenshots / visionKimi K3

Kimi K3 is the side marked multimodal in the catalog.

Target WorkloadRecommended PickEvaluation Rationale
Repo / coding agentsinsufficient dataNeed SWE-bench on both sides.
High-volume chatKimi K3Lower output list price ($15/1M).
Voice / low-latency UIinsufficient dataNeed TTFT on both sides.
Long-document RAGKimi K3Larger window (1M).
Screenshots / visionKimi K3Kimi K3 is the side marked multimodal in the catalog.

Related Editorial Dispatches & Benchmark Notes

View all news
launchJun 8, 2026

Kimi K3: Moonshot’s long-context open-weight competitive row

Jun 2026. The Kimi vs GPT hub remaps to the top Moonshot Elo vs top OpenAI Elo.

Community Sentiment

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LIVE
VS
sakana

Sakana: Fugu Ultra

Elo n/a
LiveBench—
SWE-bench—
Speed—
Output cost$30/1M
Moonshot

Kimi K3

Elo 1,528
LiveBench69.5%
SWE-bench73.8%
Speed68 tok/s
Output cost$15/1M

Frequently Asked Questions

Which is better overall, Sakana: Fugu Ultra or Kimi K3?
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 Kimi K3?
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?
Kimi K3 output tokens are $15/1M versus $30/1M. Input prices and retry rates still move the real bill.
Which is faster, Sakana: Fugu Ultra or Kimi K3?
We do not have TTFT for both models.
Which has the larger context window?
Kimi K3 accepts 1M tokens versus 1M.
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 Kimi K3 Elo cells are dated snapshots from the named source — we do not compute Arena ourselves.

Related news

  • launch · Jun 8, 2026

    Kimi K3: Moonshot’s long-context open-weight competitive row

Similar Head-to-Head Comparisons

All Sakana: Fugu Ultra matchups →|All Kimi K3 matchups →
Kimi K3 vs MoonshotAI: Kimi K2.5 (previous kimi)MoonshotAI: Kimi K2 0711 vs Kimi K3Kimi Chat 1.5 vs Kimi K3Claude Opus 4.5 vs Kimi K3Claude Opus 4.6 vs Kimi K3Claude Sonnet 4.5 vs Kimi K3