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GPT-6 Luna vs GPT-6 Luna Pro

GPT-6 Luna is the cheaper option on input; GPT-6 Luna is cheaper on output. Figures below are per million tokens, from vendor pricing cited in our reporting.

 GPT-6 LunaGPT-6 Luna Pro
Input per 1M tokens$0.10$0.10
Output per 1M tokens$0.50$0.50
Cached input per 1M—$0.01
Context window—1.05M tokens
Parameters——
Licenceproprietary
Benchmark——
VendorOpenAIOpenAI
Released22 Sept 2026—

What the numbers say

Sources

GPT-6 Luna specs · GPT-6 Luna Pro specs · Full price index