GPT-6 Luna
by Merge Gateway · family gpt-luna · listed Sep 2026RTV
OpenAI's most efficient model for focused, high-volume tasks
Current rates USD per 1M tokens
Input$0.10
Output$0.50
Cache read$0.01
Cache write$0.125
Against the market
On the record
- Model id
openai/gpt-6-luna- Context window
- 1.1M tokens
- Max output
- 128K tokens
- Input modalities
- text, image
- Output modalities
- text
- Reasoning
- yes
- Tool calls
- yes
- Open weights
- no
- Knowledge cutoff
- May 2026
- Released
- 2026-09-22
- Last updated
- 2026-09-22
- Provider docs
- docs.merge.dev/merge-gateway
Back of the envelope
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