GPT-6 Luna vs Gemini 3.5 Flash-Lite
GPT-6 Luna from OpenAI and Gemini 3.5 Flash-Lite from Google, side by side. Every figure comes from the model registry. No markup on model usage: you pay the provider's list price.
| Attribute |   GPT-6 Luna |  Gemini 3.5 Flash-Lite |
|---|---|---|
| Provider | OpenAI | |
| Model id | openai/gpt-6-luna | google/gemini-3.5-flash-lite |
| Status | Available via Safeguard | Available via Safeguard |
| Input / 1M tokens | $0.10 | $0.30 |
| Output / 1M tokens | $0.50 | $2.50 |
| Price notes | Standard tier, prompts <=272K input tokens. Over 272K: $0.20 in / $0.75 out. Cached input $0.01. | Paid tier, same input price for text, image, video and audio, output includes thinking tokens. |
| Context | 1.05M | 1.05M |
| Parameters | Not published | Not published |
| Max output | 128,000 tokens | 65,536 tokens |
| Modality | Text and image | Text and image |
| Weights | Closed | Closed |
| Zero data retention | Available | Not offered |
| Prompts go to | OpenAI (no processing-region constraint by default) | Google (Gemini Developer API) |
| Retention | API data not used for training unless you opt in, abuse monitoring logs that can include prompts and responses kept up to 30 days by default, some features store application state | Paid tier: prompts and responses not used to improve Google products, but logged for a limited period for abuse monitoring, free tier content may be used to improve products |
| Region | Global by default, data residency projects in US, EU and other regions (approval required, 10% uplift for models released on or after 2026-03-05) | No region guarantee, data may be stored transiently or cached in any country where Google operates. Google points ZDR and enterprise processing needs to Vertex AI (Gemini Enterprise Agent Platform) |
| Price checked | 2026-10-08 | 2026-10-08 |
Self-healing security runs on Safeguard.
Your first fix PR is minutes away.
No sales call required, even your agent can complete the purchase over MCP.