GPT-6-luna
gpt-6-luna
OpenAI · chat · api
Intelligence
Context
1.1M
Max output
128K
Input $/1M
$0.40
Output $/1M
$1.80
Modalities
text
Released
14 Sept 2026
Intelligence Index via Artificial Analysis · 0–100, higher is better
AI summary
● machine-written
OpenAI GPT-6-luna: text model with 1.05M context window
GPT-6-luna is a text-based chat model available via OpenAI API, designed for high-volume, latency-sensitive tasks. It features a 1,050,000 token context window and maximum output of 128,000 tokens. The model balances cost efficiency with capable reasoning performance.
What's new
- 1,050,000 token context window supports extended document processing
- Maximum output of 128,000 tokens for substantial generation tasks
- Pricing updated to $0.40/$1.80 per million input/output tokens as of September 2026
Best for
High-volume, latency-sensitive chat applicationsClassification and lightweight agentic workflowsLong-context document processing and analysis