OpenAIProprietaryReleased Sep 22, 2026GPT-6 Luna Pro pricing, benchmarks and cost analysis
No Epoch Capabilities Index score for this model yet
Throughput not measured for this model
In $0.100Out $0.500 per 1MCache discount 90%
Context window, tokens
Ranks are among the 101 models we track (intelligence = Epoch Capabilities Index by Epoch AI, CC BY 4.0; intelligence and speed: among those with data; cost: #1 is cheapest). Monthly cost uses the default workload of 2,000 input and 500 output tokens, 10,000 requests a day, 40% cached.
Comparison summary
GPT-6 Luna Pro costs $113 a month for the default workload of 2,000 input and 500 output tokens, 10,000 requests a day with 40% cached input. That is 87% below the median model ($873). It ranks #8 of 101 on cost, where #1 is the cheapest.
We have no Epoch Capabilities Index (ECI) score for GPT-6 Luna Pro, so it is not ranked on intelligence here and we do not suggest quality-matched alternatives.
Cached input is 90% cheaper than fresh input, in line with the 90% median. It is a proprietary model served by OpenAI. The batch API cuts the default workload to $56.70 a month.
Technical specifications
- Context window
- 1M tokens
- Input price
- $0.100 / 1M
- Cached input price
- $0.010 / 1M
- Output price
- $0.500 / 1M
- Cache discount
- 90%
- Batch API
- Available
- Batch input / cached / output
- $0.050 / $0.005 / $0.250
- Open weights
- No
- Release date
- Sep 22, 2026
- Price volatility
- Stable
Benchmarks
We do not have any benchmark scores for GPT-6 Luna Pro yet. See the benchmark leaderboards.
Your monthly bill
Standard
$113 / month- Input
- $36.00
- Cached input
- $2.40
- Output
- $75.00
Batch
$56.70 / month- Input
- $18.00
- Cached input
- $1.20
- Output
- $37.50
On the default workload the batch API costs $56.70 a month against $113 standard.
Price history
No price changes since we started tracking on Jul 13, 2026.