Ling 3.0 Flash Sante (free) is free for input tokens while Kimi K3.1 Pro costs $2 per 1M tokens.
API cost decision in 10 seconds
NewKimi K3.1 Pro vs Ling 3.0 Flash Sante (free)
Pick Ling 3.0 Flash Sante (free) for lower cost; pick Kimi K3.1 Pro only if the larger context window matters more.
Page updated:
Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick Ling 3.0 Flash Sante (free) for lower cost; pick Kimi K3.1 Pro only if the larger context window matters more.
On the standard 1M input plus 500K output workload, Ling 3.0 Flash Sante (free) is estimated at $0 vs $7 for Kimi K3.1 Pro, saving $7 (100% lower).
Cost-first pickLing 3.0 Flash Sante (free)
Context-first pickKimi K3.1 Pro
Sample savings$7100%
10x traffic gap$70
Kimi K3.1 Pro has more context, but Ling 3.0 Flash Sante (free) saves $7 on the standard workload. At 10x that traffic, the same price gap is about $70. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Ling 3.0 Flash Sante (free) stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | Kimi K3.1 Pro | Ling 3.0 Flash Sante (free) |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | Ling 3.0 Flash Sante (free) | $15 | $0 |
| Balanced workload | 1M input + 1M output | Ling 3.0 Flash Sante (free) | $12 | $0 |
| Output-heavy chatbot | 1M input + 5M output | Ling 3.0 Flash Sante (free) | $52 | $0 |
Ling 3.0 Flash Sante (free) is free for output tokens while Kimi K3.1 Pro costs $10 per 1M tokens.
Kimi K3.1 Pro has 786.43K more context (4x larger).
Ling 3.0 Flash Sante (free) is free for the standard workload while the other model is estimated at $7.
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
Ling 3.0 Flash Sante (free) has the lower input price; Ling 3.0 Flash Sante (free) has the lower output price; Kimi K3.1 Pro offers the larger context window. For the 1M input plus 500K output sample, Ling 3.0 Flash Sante (free) is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $7 for Kimi K3.1 Pro and $0 for Ling 3.0 Flash Sante (free).
Choose Kimi K3.1 Pro when you care most about larger context window.
Choose Ling 3.0 Flash Sante (free) when you care most about lower input-token price, and lower output-token price.
- On the standard 1M input plus 500K output workload, Ling 3.0 Flash Sante (free) is estimated at $0 vs $7 for Kimi K3.1 Pro, saving $7 (100% lower).
- Ling 3.0 Flash Sante (free) is free for the standard workload while the other model is estimated at $7.
- Ling 3.0 Flash Sante (free) is free for input tokens while Kimi K3.1 Pro costs $2 per 1M tokens.
- Ling 3.0 Flash Sante (free) is free for output tokens while Kimi K3.1 Pro costs $10 per 1M tokens.
- Kimi K3.1 Pro has 786.43K more context (4x larger).
| Feature | NewKimi K3.1 Pro (MoonshotAI) | Ling 3.0 Flash Sante (free) (inclusionAI) |
|---|---|---|
| Input Price prompt tokens per 1M | $2 | $0 |
| Completion Price per 1M tokens | $10 | $0 |
| Sample Workload Cost 1M input + 500K output | $7 | $0 |
| Context Window | 1.05M | 262.14K |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | Ling 3.0 Flash Sante (free) | On the standard 1M input plus 500K output workload, Ling 3.0 Flash Sante (free) is estimated at $0 vs $7 for Kimi K3.1 Pro, saving $7 (100% lower). |
| High-volume input processing | Ling 3.0 Flash Sante (free) | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Ling 3.0 Flash Sante (free) | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | Kimi K3.1 Pro | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Kimi K2.7 Code (free) can replace Kimi K3.1 Pro when lower sample workload cost matters most: $0.
- Kimi K2.6 (free) can replace Kimi K3.1 Pro when lower sample workload cost matters most: $0.
- Kimi K2 0711 can replace Kimi K3.1 Pro when lower sample workload cost matters most: $1.72.
- Kimi K2.5 can replace Kimi K3.1 Pro when lower sample workload cost matters most: $1.75.
- 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.
- Llama 4 Scout offers 1.31M context with $0.25 sample workload cost.
- MiMo-V2.6-Flash offers 1.05M context with $0.28 sample workload cost.
- DeepSeek V4.1 Flash · DeepSeek · #1
- DeepSeek V4.1 Flash 1017 · DeepSeek · #2
- GLM 5.3 Flash · Z.ai · #3
- Hy4 preview · Tencent · #4
Cheaper alternatives
Review low-cost models sorted by a standard 1M input plus 500K output workload.
Open cheapest modelsLarger context alternatives
Find models with larger context windows for RAG, long documents, and codebase review.
Open largest context modelsProvider catalogs
Compare models within provider hubs before choosing a final API vendor.
Open provider hubsMoonshotAI catalog
Review all tracked MoonshotAI models before deciding whether this matchup is the right shortlist.
Open MoonshotAI modelsinclusionAI catalog
Check other inclusionAI models with comparable pricing, context, or release timing.
Open inclusionAI modelsKimi K3.1 Pro is Moonshot AI's flagship open-weight multimodal reasoning model and a post-trained successor to Kimi K3, with a 1M-token context window. It is built for long-horizon coding, 3D...
Ling 3.0 Flash Sante is a health and medicine-focused mixture-of-experts model from InclusionAI, built on Ling 3.0 Flash with 5.1B active parameters out of 124B total. It is designed for...