GPT-6 Luna is $0.05 cheaper per 1M input tokens (33.3% lower; 1.5x difference).
API cost decision in 10 seconds
🔥DeepSeek V4.1 Flash vs NewGPT-6 Luna
Pick GPT-6 Luna 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 when budget and context both matter.
On the standard 1M input plus 500K output workload, GPT-6 Luna is estimated at $0.35 vs $0.45 for DeepSeek V4.1 Flash, saving $0.1 (22.2% lower).
Cost-first pickGPT-6 Luna
Context-first pickGPT-6 Luna
Sample savings$0.122.2%
10x traffic gap$1
GPT-6 Luna is cheaper on the standard workload and also has the larger context window. At 10x that traffic, the same price gap is about $1. Use the calculator below to replace the sample workload with your own token volume.
Cost sensitivity
Workload Sensitivity
GPT-6 Luna stays cheaper across input-heavy, balanced, and output-heavy sample workloads.
| Workload shape | Token mix | Better pick | DeepSeek V4.1 Flash | GPT-6 Luna |
|---|---|---|---|---|
| Input-heavy / RAG | 5M input + 500K output | GPT-6 Luna | $1.05 | $0.75 |
| Balanced workload | 1M input + 1M output | GPT-6 Luna | $0.75 | $0.6 |
| Output-heavy chatbot | 1M input + 5M output | GPT-6 Luna | $3.15 | $2.6 |
GPT-6 Luna is $0.1 cheaper per 1M output tokens (16.7% lower; 1.2x difference).
GPT-6 Luna has 1.42K more context (1x larger).
GPT-6 Luna is $0.1 cheaper on the standard workload (22.2% 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 has the lower input price; GPT-6 Luna has the lower output price; GPT-6 Luna offers the larger context window. For the 1M input plus 500K output sample, GPT-6 Luna is cheaper for the standard workload.
For a 1M input token plus 500K output token workload, the estimated API cost is $0.45 for DeepSeek V4.1 Flash and $0.35 for GPT-6 Luna.
Choose DeepSeek V4.1 Flash when its provider, model quality, latency, or availability is more important than the numeric price/context winner.
Choose GPT-6 Luna when you care most about lower input-token price, lower output-token price, and larger context window.
- On the standard 1M input plus 500K output workload, GPT-6 Luna is estimated at $0.35 vs $0.45 for DeepSeek V4.1 Flash, saving $0.1 (22.2% lower).
- GPT-6 Luna is $0.1 cheaper on the standard workload (22.2% lower).
- GPT-6 Luna is $0.05 cheaper per 1M input tokens (33.3% lower; 1.5x difference).
- GPT-6 Luna is $0.1 cheaper per 1M output tokens (16.7% lower; 1.2x difference).
- GPT-6 Luna has 1.42K more context (1x larger).
| Feature | 🔥DeepSeek V4.1 Flash (DeepSeek) | NewGPT-6 Luna (OpenAI) |
|---|---|---|
| Input Price prompt tokens per 1M | $0.15 | $0.1 |
| Completion Price per 1M tokens | $0.6 | $0.5 |
| Sample Workload Cost 1M input + 500K output | $0.45 | $0.35 |
| Context Window | 1.05M | 1.05M |
| Release Date | ||
| Popularity | #3 |
Use-Case Decision Matrix
| Use case | Better pick | Why |
|---|---|---|
| Budget-constrained production | GPT-6 Luna | On the standard 1M input plus 500K output workload, GPT-6 Luna is estimated at $0.35 vs $0.45 for DeepSeek V4.1 Flash, saving $0.1 (22.2% lower). |
| High-volume input processing | GPT-6 Luna | Lower prompt-token price matters most when prompts, retrieved passages, or documents dominate the bill. |
| Long responses and chatbots | GPT-6 Luna | Lower output-token price matters most when assistants generate many completion tokens. |
| RAG or long-document work | GPT-6 Luna | A larger context window leaves more room for retrieved passages, conversation history, or source files. |
Related Alternatives
- DeepSeek V4 Flash 0731 (free) can replace DeepSeek V4.1 Flash when lower sample workload cost matters most: $0.
- DeepSeek V4 Flash (free) can replace DeepSeek V4.1 Flash when lower sample workload cost matters most: $0.
- DeepSeek V4 Flash 0423 can replace DeepSeek V4.1 Flash when lower sample workload cost matters most: $0.1.
- DeepSeek V4 Flash Vision Exp (batch) can replace DeepSeek V4.1 Flash when lower sample workload cost matters most: $0.28.
- GLM 5.3 Flash offers 1.31M context with $0.4 sample workload cost.
- DeepSeek V4 Flash 0731 offers 1.31M context with $0.36 sample workload cost.
- GLM Flash Latest offers 1.31M context with $0.2 sample workload cost.
- DeepSeek V4 Flash Latest offers 1.31M context with $0.43 sample workload cost.
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