OpenAI · Frontier
gpt-5.5
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
Apr 2026Knowledge cutoff
Dec 2025Modalities
Text · Tool calling · Image inputBest price on gm
-54.5%In
$5.00$2.27
Cached
$0.50$0.23
Out
$30.00$13.64
per Mtok*
//01
Recent effective price
What buyers have actually paid on this model recently, across every provider and cache hits.
Input
$3.43
$5.00Cached input
$0.34
$0.50Output
$20.58
$30.00How 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 6 windows: 1,137 requests and 2,160,337 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 | $2.27 | $13.64 |
| Provider 2 | 31.3% off | $3.43 | $20.60 |
| Provider 3 | 31.3% off | $3.43 | $20.60 |
| Provider 4 | 30.3% off | $3.48 | $20.91 |
| Provider 5 | 29.3% off | $3.54 | $21.21 |
| Provider 6 | 26.2% off | $3.69 | $22.12 |
| Provider 7 | 26.2% off | $3.69 | $22.12 |
//03
Performance
Measured on the requests gm routed to this model.
- Throughput
- 48.1 tok/sover 3,759 requests
- Time to first token
- 3.0 sover 3,757 requests
- Request success rate
- 100.0% over 3,760 requests
2,047 requests · 5,234,552 tokens billed · last 12 windowsWindow closed 2026-08-11 02:24 UTC
//04
Benchmarks
Fixed-seed suites gm runs against this model.