Dots3-Note Preview (free) is free for input tokens while Fugu Ultra v2 costs $5 per 1M tokens.
API cost decision in 10 seconds
NewFugu Ultra v2 vs Dots3-Note Preview (free)
Pick Dots3-Note Preview (free) for lower cost; pick Fugu Ultra v2 only if the larger context window matters more.
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Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Dots3-Note Preview (free) for lower cost; pick Fugu Ultra v2 only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Dots3-Note Preview (free) is estimated at $0 vs $20 for Fugu Ultra v2, saving $20 (100% lower).
Cost-first pickDots3-Note Preview (free)
Context-first pickFugu Ultra v2
Sample savings$20100%
10x traffic gap$200
Fugu Ultra v2 has more context, but Dots3-Note Preview (free) saves $20 on the standard workload. At 10x that traffic, the same price gap is about $200. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Dots3-Note Preview (free) stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Fugu Ultra v2 | Dots3-Note Preview (free) |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Dots3-Note Preview (free) | $40 | $0 |
| Balanced workload | 1M input + 1M output | Dots3-Note Preview (free) | $35 | $0 |
| Output-heavy chatbot | 1M input + 5M output | Dots3-Note Preview (free) | $155 | $0 |
Dots3-Note Preview (free) is free for output tokens while Fugu Ultra v2 costs $30 per 1M tokens.
Fugu Ultra v2 has 488K more context (1.95x larger).
Dots3-Note Preview (free) is free for the standard workload while the other model is estimated at $20.
Estimate your workload cost
Your Workload Cost
This estimate uses normalized public API pricing per 1M tokens. It is a planning aid, not a billing quote. Verify provider pricing, limits, and terms before production use.
Quick Decision
Dots3-Note Preview (free) has the lower input price; Dots3-Note Preview (free) has the lower output price; Fugu Ultra v2 offers the larger context window. For the 1M input plus 500K output sample, Dots3-Note Preview (free) is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $20 for Fugu Ultra v2 and $0 for Dots3-Note Preview (free).
Choose Fugu Ultra v2 when you care most about larger context window.
Choose Dots3-Note Preview (free) when you care most about lower input-token price, and lower output-token price.
- On the standard 1M input plus 500K output workload, Dots3-Note Preview (free) is estimated at $0 vs $20 for Fugu Ultra v2, saving $20 (100% lower).
- Dots3-Note Preview (free) is free for the standard workload while the other model is estimated at $20.
- Dots3-Note Preview (free) is free for input tokens while Fugu Ultra v2 costs $5 per 1M tokens.
- Dots3-Note Preview (free) is free for output tokens while Fugu Ultra v2 costs $30 per 1M tokens.
- Fugu Ultra v2 has 488K more context (1.95x larger).
| Feature | NewFugu Ultra v2 (Sakana) | Dots3-Note Preview (free) (Dots Studio) |
|---|---|---|
| Input Price prompt tokens per 1M | $5 | $0 |
| Completion Price per 1M tokens | $30 | $0 |
| Sample Workload Cost 1M input + 500K output | $20 | $0 |
| Context Window | 1M | 512K |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Dots3-Note Preview (free) | On the standard 1M input plus 500K output workload, Dots3-Note Preview (free) is estimated at $0 vs $20 for Fugu Ultra v2, saving $20 (100% lower). |
| High-volume input processing | Dots3-Note Preview (free) | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Dots3-Note Preview (free) | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Fugu Ultra v2 | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Sakana Namazu can replace Fugu Ultra v2 when lower sample workload cost matters most: $2.95.
- Fugu Max can replace Fugu Ultra v2 when lower sample workload cost matters most: $5.
- Grok 4.20 Multi-Agent offers 2M context with $2.5 sample workload cost.
- Grok 4.20 offers 2M context with $2.5 sample workload cost.
- GLM 5.3 Flash offers 1.31M context with $0.4 sample workload cost.
- DeepSeek V4 Flash 0731 offers 1.31M context with $0.08 sample workload cost.
- Hy4 preview · Tencent · #1
- GPT-5.6 Luna · OpenAI · #2
- GLM 5.3 Flash · Z.ai · #3
- DeepSeek V4 Flash 0731 · DeepSeek · #4
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