GPT-5.5 Pro
openai/gpt-5.5-pro
Compare with GPT-5.6 Luna Pro, GPT-5.6 Sol Pro, GPT-5.6 Terra Pro
CompareGPT-5.5 Pro
| Provider | State | Uptime 5m | 24h | p50 latency | p99 | Throughput | Context | $/Mtok |
|---|---|---|---|---|---|---|---|---|
OpenAIopenai | Healthy | 100% | 100% | 3.99s | 153s | 4.0 tps | 1.1M | $30.00 / $180.00 |
OpenAIopenai/flex | Healthy | 100% | 100% | — | — | — | 1.1M | $15.00 / $90.00 |
- OpenAI100%Healthy24h 100%
- p50
- 3.99s
- p99
- 153s
- Throughput
- 4.0 tps
- Context
- 1.1M
- $/Mtok
- $30.00 / $180.00
openai - OpenAI100%Healthy24h 100%
- p50
- —
- p99
- —
- Throughput
- —
- Context
- 1.1M
- $/Mtok
- $15.00 / $90.00
openai/flex
Measured 1m ago. Latency and throughput are OpenRouter's rolling 30-minute windows.
History
Availability
Axis starts at 90% so small differences stay visible; it expands to 0 when an endpoint falls below.
Time to first token
Logarithmic axis — the fleet spans two orders of magnitude. p50 and p99 are OpenRouter's rolling 30-minute windows, averaged over the hour.
Throughput
Median tokens per second.