OpenAI: GPT-5.5 (batch)

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.

• Context window: 1,050,000 tokens
• Input: file, image, text
• Output: text
• Pricing: $2.5/M input tokens, $15/M output tokens

View on OpenRouter. Model data sourced from OpenRouter.