GPT-6 Luna vs Gemini 2.5 Flash-Lite.
Gemini 2.5 Flash-Lite is 1.2x cheaper.
For a chatbot doing 100K requests a month with 1,000 input and 500 output tokens each: $30.00 vs $35.00.
OpenAI
GPT-6 Luna
| Input / 1M | $0.10 |
| Cached / 1M | $0.01 |
| Output / 1M | $0.50 |
| Context | — |
| Chatbot at 100K req/mo | $35.00 |
Source · Oct 20, 2026
Google Gemini
Gemini 2.5 Flash-Lite
| Input / 1M | $0.10 |
| Cached / 1M | $0.01 |
| Output / 1M | $0.40 |
| Context | — |
| Chatbot at 100K req/mo | $30.00 |
Source · Oct 20, 2026
Sponsored
Your API or dev tool here. Reach developers comparing model costs right now.Price isn't everything: check quality on your own prompts. Gemini 2.5 Flash-Lite wins on list price for this workload, but output-heavy jobs (long answers, agents, reasoning) shift the math toward whichever model has the lower output price, which here is Gemini 2.5 Flash-Lite.