openai/gpt-6-lunaGPT-6 Luna is OpenAI’s proprietary AI model, released Sep 22, 2026. It scores 156 on the Epoch Capabilities Index, costs $0.10/M input and $0.50/M output tokens, and handles a 1.1M-token context window. Its strongest use case is coding, where it ranks in the 78th percentile of the models Model Beat tracks.
GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, positioned below GPT-6 Sol.
Scores on standardized evaluations. Higher is better — and rank shows where GPT-6 Luna lands among all models tracked on Model Beat.
Abstract visual reasoning
Harder abstract reasoning
Graduate-level scientific reasoning
Frontier of human expert knowledge
Factual accuracy & hallucination
Scientific research coding
Human-rated web development
Olympiad-qualifier math
Multi-step agentic tasks
GPT-6 Luna is the fast, cost-efficient model in OpenAI's GPT-6 series, positioned below GPT-6 Sol.
GPT-6 Luna is an AI model developed by OpenAI, part of the GPT family, released Sep 22, 2026.
GPT-6 Luna's list price from OpenAI is $0.10 per million input tokens and $0.50 per million output tokens.
GPT-6 Luna supports a context window of up to 1.1M tokens.
On standardized evaluations tracked by Epoch AI, GPT-6 Luna scores 54.6% on SciCode, 1582 on WebDev Arena, 98.9% on AIME 2024/2025.
GPT-6 Luna is a proprietary model (API access), available through its provider's API rather than as a downloadable open-weight model.
Benchmark data from Epoch AI (CC BY) and Artificial Analysis; pricing, specs & descriptions from OpenRouter. Data updated Nov 12, 2026.