GPT-6 Luna
OpenAI's 22 Sep 2026 small GPT-6 model at $0.10/$0.50 per 1M tokens with cached input at $0.01. Artificial Analysis Intelligence Index v4.3.2 scores it 37 at max effort at $0.07 per Index task. It is verbose for its size: 140M output tokens across the Index, so the low rate is partly spent on length. 1,050,000 context with 922K maximum input and 128K maximum output; requests above 272K input tokens bill at 2x input and 1.5x output for the whole request. Knowledge cutoff 18 May 2026. Batch and Flex are half price and Fast mode doubles the rate.
1M
tokens
128K
tokens
$0.1
per 1M tokens
$0.5
per 1M tokens
—
tokens/sec
Sep 2026
2026-09-22
$0.30
per 1M tokens
296.7
quality per $
Capabilities
Benchmarks
Price vs Quality
Context Window in Context
- ▸ GPT-6 Luna1.1M
- GPT-5.6 Sol1.1M
- GPT-5.6 Terra1.1M
- GPT-5.6 Luna1.1M
- GPT-6 Astra1.1M
- GPT-6.1 Sol1.1M
- GPT-6 Sol1.1M
- Kimi K31.0M
Not on our gateway yet
Swfte Connect does not hold a key for GPT-6 Luna, so there is nothing to run here. Add your own provider key and call it with the same API as every other model in this directory.
curl https://api.swfte.com/agents/v2/gateway/chat/completions \
-H "Authorization: Bearer $SWFTE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "openai:gpt-6-luna",
"messages": [{"role": "user", "content": "Hello"}]
}'About GPT-6 Luna
GPT-6 Luna is a fast AI model by OpenAI, released on September 22, 2026. It supports a context window of 1050K tokens and can generate up to 128K output tokens.
At $0.1 per million input tokens and $0.5 per million output tokens, its blended cost of $0.30/1M tokens makes it one of the most affordable models available. Its value score of 296.7 reflects the balance of quality and cost.
Using GPT-6 Luna with Swfte
Access GPT-6 Luna through Swfte Connect, our unified LLM gateway. Connect gives you a single API for 50+ models, with automatic routing, cost optimization, and fallback handling. You can also try GPT-6 Luna in our AI Playground before integrating.