GPT-6 Luna
High-volume, latency-sensitive tasks like classification, extraction, and chat.
GPT-6 Luna supersedes GPT-5.6 Luna, GPT-5.4 Mini, GPT-5.4 Nano, GPT-5 Mini, GPT-5 Nano, o3-Mini, GPT-4o Mini.
What are GPT-6 Luna's specs and price?
GPT-6 Luna, built by OpenAI, ships a 1.1M-token context window and a 64K-token max output, released 2026-09. It supports text and vision input and costs $0.20 per million blended tokens, the 6th-cheapest of 42 models we track.
What are GPT-6 Luna's specs?
| Context window | 1.1M tokens |
| Max output | 64K tokens |
| Modalities | text, vision |
| Extended thinking | No |
| Released | 2026-09 |
| Knowledge cutoff | 2026-06 |
| Provider | OpenAI |
Verified 2026-08-14 — source.
Where does GPT-6 Luna rank?
What are GPT-6 Luna's strengths?
- Cheapest current GPT-6 tier
- Low latency for high-volume calls
- 1M+ context window and vision input
What else should you know about GPT-6 Luna?
What are common questions about GPT-6 Luna?
What is GPT-6 Luna's context window?
GPT-6 Luna has a 1.1M-token context window and a 64K-token max output — the 6th-largest context of the 42 current models we track. Source: https://platform.openai.com/docs/models, verified 2026-08-14.
Does GPT-6 Luna support vision or audio input?
Yes — GPT-6 Luna accepts vision input in addition to text.
Does GPT-6 Luna have a reasoning or extended-thinking mode?
No — GPT-6 Luna does not expose a separate reasoning/extended-thinking mode.
When was GPT-6 Luna released, and what is its knowledge cutoff?
GPT-6 Luna was released 2026-09 with a knowledge cutoff of 2026-06.
How much does GPT-6 Luna cost, and who provides it?
GPT-6 Luna is served by OpenAI at $0.20/M blended tokens (3:1 input:output) — the 6th-cheapest of 42 current models. Full pricing breakdown: /llm-api-pricing/gpt-6-luna.