AI model comparison
Compare recorded price, context, output limits, speed, latency, capabilities, and input/output support. Every missing value stays visible, and unsourced benchmarks are excluded.
Kimi K3 and Fugu Ultra both come up when teams are choosing a model for production work, and the honest answer usually depends on your workload rather than a leaderboard. This page puts their published specifications side by side — context window, token pricing, supported inputs and outputs — so you can see where they actually differ.
Moonshot AI
Moonshot's frontier model — 2.8 trillion parameters, a million-token window, and thinking effort you can dial up when the task deserves it.
Accepts
Produces
Sakana AI
Quality-first multi-agent model for hard research, analysis, and competitions
Accepts
Produces
At a glance
This is a directional summary of the values recorded in this directory—not a universal quality verdict. Test the finalists on your own prompts before committing.
Where Kimi K3 leads in recorded data
Where Fugu Ultra leads in recorded data
Context capacity
Higher listed limit
Kimi K3:1.0M
Fugu Ultra:1M
Kimi K3
Maximum output
Higher listed limit
Kimi K3:131.1K
Fugu Ultra:1M
Fugu Ultra
Input price
Lower recorded price
Kimi K3:$3.00
Fugu Ultra:$5.00
Kimi K3
Output price
Lower recorded price
Kimi K3:$15.00
Fugu Ultra:$30.00
Kimi K3
Output speed
Higher recorded throughput
Kimi K3:—
Fugu Ultra:—
No complete comparison
Time to first token
Lower recorded latency
Kimi K3:—
Fugu Ultra:—
No complete comparison
Intelligence Index
Higher directory index
Kimi K3:—
Fugu Ultra:—
No complete comparison
Evidence
A score appears only when both records include a verified source. It is not treated as a universal ranking.
Specifications
| Specification | Kimi K3 | Fugu Ultra |
|---|---|---|
| Provider | Moonshot AI | Sakana AI |
| Model family | kimi-k3 | fugu |
| Accepted inputs | text, image, video | text, image |
| Produced outputs | text | text |
| Context window | 1.0MRecorded lead | 1M |
| Max output | 131.1K | 1MRecorded lead |
| Intelligence Index | — | — |
| Input price / 1M | $3.00Recorded lead | $5.00 |
| Output price / 1M | $15.00Recorded lead | $30.00 |
| Output speed | — | — |
| Time to first token | — | — |
| Reasoning mode | Documented | Documented |
| Tool calling | Documented | Documented |
| Image input | Documented | Documented |
| Audio input | Not documented | Not documented |
| Structured output | Documented | Documented |
| License | Open weights | Proprietary |
| Released | Jul 16, 2026 | Jun 15, 2026 |
Workload guidance
On the published numbers, Kimi K3 accepts the larger context window and Kimi K3 is cheaper per input token. Which matters more depends on whether your bottleneck is document size or spend — the table above has the exact figures.
Provenance
Prices and hosted performance can change. SyncDev records source references and clearly separates documented specifications from measured values; confirm commercial terms with the provider before deployment.
Kimi K3
Moonshot AI · model record and recorded source
Fugu Ultra
Sakana AI · model record and recorded source
Choose any two approved model records and review them with the same evidence rules.