OpenAI: GPT-5.5
openai/gpt-5.5
GPT-5.5 is OpenAI’s frontier model designed for complex professional workloads, building on GPT-5.4 with stronger reasoning, higher reliability, and improved token efficiency on hard tasks. It features a 1M+ token...
Modalities
In / Out Price
$5 / $30 per 1M
Context
1.1M
Released
Apr 24, 2026
Knowledge Cutoff
Dec 2025
Providers
Different carriers host the same model. Reroute routes each request to the best one on price and uptime, and fails over to the next if a carrier goes down.
| Provider | Context | Input /M | Output /M | Cache read /M | Latency | Throughput | Uptime |
|---|---|---|---|---|---|---|---|
| OpenAI | 1.1M | $2.50 | $15 | $0.25 | — | — | — |
 Azure | 1.1M | $5 | $30 | $0.50 | — | — | 100.00% |
| OpenAI | 1.1M | $5 | $30 | $0.50 | — | — | 100.00% |
| Azure | 1.1M | $5.50 | $33 | $0.55 | — | — | — |
| Azure | 1.1M | $5.50 | $33 | $0.55 | — | — | — |
 Amazon Bedrock | 1.1M | $5.50 | $33 | $0.55 | — | — | — |
| OpenAI | 1.1M | $12.50 | $75 | $1.25 | — | — | — |