OpenAIBase plan
GPT-6 Luna
OpenAI's efficient GPT-6 model for fast, high-volume chat, extraction, ranking, and lightweight tool use, with a 1.05M-token context window. OpenAI's recommended replacement for GPT-4o, GPT-4o mini, GPT-4.1, GPT-4.1 mini, and GPT-5.4 nano.
You always get the exact model you pick — we never silently route you to another.
Specifications
| Provider | OpenAI |
|---|---|
| Released | 2026-09-22 |
| Intelligence | Medium |
| Speed | Fast |
| Context window | 1,050,000 tokens |
| Max output | 128,000 tokens |
| Knowledge cutoff | May 18, 2026 |
| Input price | $0.10 / 1M tokens |
| Output price | $0.50 / 1M tokens |
| Request cost | 1 base request |
| Plan tier | Base |
| Input | Text, Image |
| Output | Text |
| Features | Cached input: $0.01 / 1M tokens, Above 272K input tokens: $0.20 input, $0.02 cached input, and $0.75 output per 1M tokens, Web search, file search, image generation, code interpreter, hosted shell, apply patch, skills, computer use, MCP, and tool search supported |
| API endpoints | v1/chat/completions, v1/responses, v1/batch |
| Model ID | gpt-6-luna |