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DeepSeek V4.1 Flash Fast vs GPT 5.6 Luna
Side-by-side comparison of token prices, context windows, and capabilities across official model makers.
| Specification | DeepSeek V4.1 Flash Fast deepseek-v4.1-flash-fast | GPT 5.6 Luna gpt-5.6-luna |
|---|---|---|
| Official provider | DeepSeek | OpenAI |
| Input / 1M | $0.32$0.224save $0.096 | $0.20$0.07save $0.13 Cheaper |
| Output / 1M | $1.16$0.812save $0.348 | $1.20$0.42save $0.78 Cheaper |
| Context | 1M | 1.05MLarger context |
| Max out | 393K | 128K |
| Capabilities | visiontoolsreasoningcache | visiontoolsreasoningcache |
30-day workload (30M input · 80% cached · 3M output) Estimated monthly spend on AivoKey | $9.156 | $3.36 |
| Model details | DeepSeek V4.1 Flash Fast → | GPT 5.6 Luna → |