OpenAI · Frontier
gpt-5.6-luna
A closed model, reached through gm. The route is sealed in transit and in use; the model maker still receives the prompt under its API terms.
- Tool calling: yes
- Image input: yes
Released
Jul 2026Knowledge cutoff
Feb 2026Modalities
Text · Tool calling · Image inputBest price on gm
-54.5%In
$0.20$0.09
Cached
$0.02$0.01
Out
$1.20$0.55
per Mtok*
//01
Recent effective price
What buyers have actually paid on this model recently, across every provider and cache hits.
Input
$0.14
$0.20Cached input
$0.01
$0.02Output
$0.85
$1.20How the effective price is calculated
Requests are load balanced across every provider serving this model, each offering its own rate, so what you pay is a blend rather than a single number. These are the blended rates actually paid — priced at what a provider offered, capped at list.
Measured over 7 windows: 1,257 requests and 2,047,904 input-side tokens. Most recent window closed 2026-08-11 02:24 UTC.
//02
Who's serving this model
Every provider currently serving this model, ranked by discount.
| Provider | Discount | In | Out |
|---|---|---|---|
| Provider 1 | 54.5% off | $0.09 | $0.55 |
| Provider 2 | 30.3% off | $0.14 | $0.84 |
| Provider 3 | 29.3% off | $0.14 | $0.85 |
| Provider 4 | 29.3% off | $0.14 | $0.85 |
| Provider 5 | 26.2% off | $0.15 | $0.88 |
| Provider 6 | 24.2% off | $0.15 | $0.91 |
| Provider 7 | 4.0% off | $0.19 | $1.15 |
//03
Performance
Measured on the requests gm routed to this model.
- Throughput
- 84.3 tok/sover 7,757 requests
- Time to first token
- 1.9 sover 7,838 requests
- Request success rate
- 97.6% over 7,890 requests
2,054 requests · 4,651,075 tokens billed · last 12 windowsWindow closed 2026-08-11 02:24 UTC
//04
Benchmarks
Fixed-seed suites gm runs against this model.