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...
openai/gpt-5.5GPT-5.5 is an API model from OpenAI, released on Apr 24, 2026, with a context window of 1,050,000 tokens, pricing of $5 per million input tokens and $30 per million output tokens. It accepts file, image, text input and produces text output.
At listed prices, a request with 10,000 input tokens and 1,000 output tokens costs about $0.08.
Specs are sourced from OpenRouter and were last checked on Nov 3, 2026. Always confirm current pricing and limits with the provider before production use.
GPT-5.5 supports a context window of 1,050,000 tokens.
GPT-5.5 is listed at $5 per million input tokens and $30 per million output tokens on OpenRouter.
GPT-5.5 was published on Apr 24, 2026.
GPT-5.5 accepts file, image, text input and produces text output.