GPT-6 Luna vs DeepSeek V4.1 Flash
GPT-6 Luna from OpenAI and DeepSeek V4.1 Flash from DeepSeek, 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 |   DeepSeek V4.1 Flash |
|---|---|---|
| Provider | OpenAI | DeepSeek |
| Model id | openai/gpt-6-luna | deepseek/deepseek-flash |
| Status | Available via Safeguard | Available via Safeguard |
| Input / 1M tokens | $0.10 | $0.30 |
| Output / 1M tokens | $0.50 | $1.20 |
| Price notes | Standard tier, prompts <=272K input tokens. Over 272K: $0.20 in / $0.75 out. Cached input $0.01. | Peak-hour list price (cache miss). Off-peak is half: $0.15 in / $0.60 out. Peak hours 01:00-04:00 and 06:00-10:00 UTC Mon-Fri excluding Chinese public holidays. Cache-hit input $0.006 peak. |
| Context | 1.05M | 1M |
| Parameters | Not published | Not published |
| Max output | 128,000 tokens | 384,000 tokens |
| Modality | Text and image | Text and image |
| Weights | Closed | Open |
| Zero data retention | Available | Not stated |
| Prompts go to | OpenAI (no processing-region constraint by default) | DeepSeek (People's Republic of China) |
| 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 | Privacy policy: personal data stored in the PRC and kept as long as necessary to provide the service, may be used to train models, with a right to opt out. No API-specific retention period or ZDR offering published |
| 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) | China (PRC) |
| Price checked | 2026-10-08 | 2026-10-08 |
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