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GPT-5.5

OpenAI's general-purpose, agentic flagship

What it is

OpenAI's flagship: it leads the general intelligence index and agentic terminal benchmarks, with a 1 million-token context window. Natively multimodal (text, images, audio in one architecture), great for screenshot analysis, charts, and voice assistants. Available in ChatGPT (free tier included) and via API. The 'mini' variant costs a fraction for simple tasks.

How to use it, step by step

  1. 1

    Go to chat.openai.com and create an account: GPT-5.5 is available even on the free plan (with limits).

  2. 2

    Attach images or screenshots with the paperclip button to have them analyzed aloud or in writing.

  3. 3

    Use voice mode (mobile app) to talk to the model in real time.

  4. 4

    For the API, create a key at platform.openai.com and call the 'gpt-5.5' model (or 'gpt-5.5-mini' to save).

  5. 5

    For agentic flows and long tasks use the 1M token context: paste entire projects in one request.

💡Practical tips

  • →It's very strong at agentic terminal workflows: use it to automate multi-step tasks.
  • →'Custom GPTs' let you build dedicated assistants with fixed instructions and files.
  • →For serious projects consider gpt-5.5-mini on simple tasks and gpt-5.5 only where top quality matters.

💰Pricing

ChatGPT free with limits; Plus at about $20/month. Via API you pay per token; gpt-5.5-mini costs a fraction.

Go to GPT-5.5

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