OpenAI: GPT-5.5 (openai/gpt-5.5) costs $5 per 1M prompt tokens and $30 per 1M completion tokens, has a 1,050,000-token context window, and supports tool calling, structured outputs, reasoning and response format. Data updated 2026-10-30.
- Prompt price
- $5 / 1M tokens
- Completion price
- $30 / 1M tokens
- Context
- 1,050,000 tokens
- Input modalities
- file, image, text
- Output modalities
- text
- Tokenizer
- GPT
- Instruct type
- —
- Knowledge cutoff
- 2025-12-01
- Hugging Face
- —
Last price change: 2026-04-25
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...
Price history
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