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...
Specifications
| Provider | OpenAI |
|---|---|
| Context window | 1,050,000 tokens (1.1M) |
| Input price | $5 / 1M tokens |
| Output price | $30 / 1M tokens |
| Input modalities | file, image, text |
| Output modalities | text |
| Model ID | openai/gpt-5.5 |
Pricing is per 1M tokens, indicative pricing via OpenRouter (updated 2026-08-22); a provider's own list price may differ.
Frequently asked questions
How much does GPT-5.5 cost?
Indicative pricing (via OpenRouter, updated 2026-08-22) is $5 per 1M input tokens and $30 per 1M output tokens. A provider's own list price may differ. On Vincony, GPT-5.5 is available on credit-based pricing alongside 800+ other models.
What is GPT-5.5's context window?
GPT-5.5 supports a context window of up to 1,050,000 tokens (1.1M), which is how much text it can consider at once.
Who makes GPT-5.5?
GPT-5.5 is built by OpenAI. You can access it — and compare it against other providers' models — through Vincony's multi-model platform.
How do I use GPT-5.5?
You can use GPT-5.5 directly through OpenAI, or via Vincony, which aggregates 800+ models (including GPT-5.5) into one interface with side-by-side comparison and credit-based pricing.