AI Models · Paid vs Paid

SAFugu Ultra v2 Paid vs AIAion 3.5 Mini Paid

Fugu Ultra v2 vs Aion 3.5 Mini compared — price per token, context window, multimodality, openness and which to choose. Full 2026 breakdown.

Fugu Ultra v2 — full profile ›  ·  Aion 3.5 Mini — full profile ›

Prices & specs refreshed from live data · olud.ai

Open-model prices = cheapest provider via OpenRouter; official maker rates may be higher.

SAFugu Ultra v2PaidSakana AI
$5 /M input
$30 /M outputManaged API (no infra to run)
TypeProprietary
Context window1M tokens
MultimodalYes
Self-hostNo
AIAion 3.5 MiniPaidAionLabs
$0.7 /M input
$1.4 /M outputManaged API (no infra to run)
TypeProprietary
Context window262K tokens
MultimodalNo
Self-hostNo
Choose Aion 3.5 Mini for the lower output price ($1.4/M vs $30/M). Choose Fugu Ultra v2 if you need the larger 1M context window.

Fugu Ultra v2 vs Aion 3.5 Mini specs

SpecFugu Ultra v2Aion 3.5 MiniWinner
MakerSakana AIAionLabs–
TypeProprietaryProprietary–
Context window1M tokens262K tokensSAFugu Ultra v2
Input price$5/M$0.7/MAIAion 3.5 Mini
Output price$30/M$1.4/MAIAion 3.5 Mini
Vision / multimodalYesNoSAFugu Ultra v2
Tool / function callingYesYes= Tie
Self-hostableNo (API only)No (API only)–
LicenseProprietaryProprietary–

Price gap & when to choose each

21×cheaper per output token

Aion 3.5 Mini is ~21× cheaper than Fugu Ultra v2 on output tokens ($1.4 vs $30 per M tokens).

SAChoose Fugu Ultra v2 if…
  • You want frontier performance through a managed API
  • You need the longer 1M context window
  • You value reliability & ecosystem
  • You don't want to manage infrastructure
AIChoose Aion 3.5 Mini if…
  • You want frontier performance through a managed API
  • You want the lower output price
  • You value reliability & ecosystem
  • You don't want to manage infrastructure

Feature comparison

CapabilityFugu Ultra v2Aion 3.5 Mini
Open weights (downloadable)✗✗
Self-hostable✗✗
Runs fully offline✗✗
Vision / multimodal✓✗
Tool / function calling✓✓
1M+ context window✓✗

How Fugu Ultra v2 and Aion 3.5 Mini score

🤝 Neck and neck on these criteria (3.1 vs 2.9 / 5).
CriterionFugu Ultra v2Aion 3.5 Mini
Cost-efficiency3.04.5
Context window5.04.0
Openness1.51.5
Self-hosting1.01.0
Multimodality5.03.5

Scores come from live data — output price (cost), context length, open vs closed weights (openness & self-hosting) and vision/tool support (multimodality). Raw task quality isn't scored here; it depends on your benchmark — see the verdict.

What each model is

Fugu Ultra v2 Paid

Sakana AI · Proprietary

Fugu Ultra v2 is the higher-performance model in Sakana AI's Fugu family. Rather than a single monolithic model, Fugu is a learned multi-agent orchestration system: a language model trained to...

Aion 3.5 Mini Paid

AionLabs · Proprietary

Aion 3.5 Mini is a multi-model roleplaying and storytelling system from AionLabs, built on the GLM family of models. It is the smaller, lower-cost sibling of Aion 3.5 and uses...

Frequently asked questions

Fugu Ultra v2 vs Aion 3.5 Mini — which is cheaper?

Aion 3.5 Mini is cheaper on output ($1.4/M vs $30/M).

Which has the larger context window?

Fugu Ultra v2 offers the larger context window (1M tokens).

Fugu Ultra v2 vs Aion 3.5 Mini — which should I pick in 2026?

Choose Aion 3.5 Mini for the lower output price ($1.4/M vs $30/M). Choose Fugu Ultra v2 if you need the larger 1M context window.

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