GPT-6 Luna Pro (batch) is $0.02 cheaper per 1M input tokens (33.3% lower; 1.5x difference).
API cost decision in 10 seconds
NewLing 3.1 Flash vs GPT-6 Luna Pro (batch)
Pick GPT-6 Luna Pro (batch) when budget and context both matter.
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Data confirmed:
Prices normalized to USD per 1M tokens
Sample workload: 1M input + 500K output
Budget verdict
Pick GPT-6 Luna Pro (batch) when budget and context both matter.
On the standard 1M input plus 500K output workload, GPT-6 Luna Pro (batch) is estimated at $0.17 vs $0.19 for Ling 3.1 Flash, saving $0.01 (6.7% lower).
Cost-first pickGPT-6 Luna Pro (batch)
Context-first pickGPT-6 Luna Pro (batch)
Sample savings$0.016.7%
10x traffic gap$0.13
GPT-6 Luna Pro (batch) is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $0.13. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
Cost winner changes by workload shape: input-heavy / RAG favors GPT-6 Luna Pro (batch), balanced workload favors Tie, and output-heavy chatbot favors Ling 3.1 Flash.
| Workload shape | Token mix | Better pick | Ling 3.1 Flash | GPT-6 Luna Pro (batch) |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | GPT-6 Luna Pro (batch) | $0.49 | $0.38 |
| Balanced workload | 1M input + 1M output | Tie | $0.3 | $0.3 |
| Output-heavy chatbot | 1M input + 5M output | Ling 3.1 Flash | $1.2 | $1.3 |
Ling 3.1 Flash is $0.02 cheaper per 1M output tokens (10% lower; 1.11x difference).
GPT-6 Luna Pro (batch) has 787.86K more context (4.01x larger).
GPT-6 Luna Pro (batch) is $0.01 cheaper on the standard workload (6.7% lower).
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
GPT-6 Luna Pro (batch) has the lower input price; Ling 3.1 Flash has the lower output price; GPT-6 Luna Pro (batch) offers the larger context window. For the 1M input plus 500K output sample, GPT-6 Luna Pro (batch) is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $0.19 for Ling 3.1 Flash and $0.17 for GPT-6 Luna Pro (batch).
Choose Ling 3.1 Flash when you care most about lower output-token price.
Choose GPT-6 Luna Pro (batch) when you care most about lower input-token price, and larger context window.
- On the standard 1M input plus 500K output workload, GPT-6 Luna Pro (batch) is estimated at $0.17 vs $0.19 for Ling 3.1 Flash, saving $0.01 (6.7% lower).
- GPT-6 Luna Pro (batch) is $0.01 cheaper on the standard workload (6.7% lower).
- GPT-6 Luna Pro (batch) is $0.02 cheaper per 1M input tokens (33.3% lower; 1.5x difference).
- Ling 3.1 Flash is $0.02 cheaper per 1M output tokens (10% lower; 1.11x difference).
- GPT-6 Luna Pro (batch) has 787.86K more context (4.01x larger).
| Feature | NewLing 3.1 Flash (inclusionAI) | GPT-6 Luna Pro (batch) (OpenAI) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.075 | $0.05 |
| Completion Price per 1M tokens | $0.225 | $0.25 |
| Sample Workload Cost 1M input + 500K output | $0.19 | $0.17 |
| Context Window | 262.14K | 1.05M |
| Release Date |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | GPT-6 Luna Pro (batch) | On the standard 1M input plus 500K output workload, GPT-6 Luna Pro (batch) is estimated at $0.17 vs $0.19 for Ling 3.1 Flash, saving $0.01 (6.7% lower). |
| High-volume input processing | GPT-6 Luna Pro (batch) | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | Ling 3.1 Flash | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | GPT-6 Luna Pro (batch) | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- Ling 3.0 Flash VL (free) can replace Ling 3.1 Flash when lower sample workload cost matters most: $0.
- Ling 3.0 Flash Sante (free) can replace Ling 3.1 Flash when lower sample workload cost matters most: $0.
- Ling 3.0 Flash Fin (free) can replace Ling 3.1 Flash when lower sample workload cost matters most: $0.
- Ling 3.0 Tiny (free) can replace Ling 3.1 Flash when lower sample workload cost matters most: $0.
- No larger-context model is currently tracked within a close sample-cost band.
- DeepSeek V4.1 Flash · DeepSeek · #1
- Step 5 Preview · StepFun · #2
- GLM 5.3 Flash · Z.ai · #3
- MiMo-V2.6-Flash · Xiaomi · #4
Cheaper alternatives
Review low-cost models sorted by a standard 1M input plus 500K output workload.
Open cheapest modelsLarger context alternatives
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Open largest context modelsProvider catalogs
Compare models within provider hubs before choosing a final API vendor.
Open provider hubsinclusionAI catalog
Review all tracked inclusionAI models before deciding whether this matchup is the right shortlist.
Open inclusionAI modelsOpenAI catalog
Check other OpenAI models with comparable pricing, context, or release timing.
Open OpenAI modelsLing 3.1 Flash is a hybrid reasoning mixture-of-experts model from inclusionAI, with 25B active parameters out of 560B total.
GPT-6 Luna Pro is the same underlying model as [GPT-6 Luna](https://openrouter.ai/openai/gpt-6-luna), served with `reasoning.mode` set to `pro` for higher-quality responses on complex tasks. **Cost note:** pro mode spends far more...