GPT-5
GPT-5 is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and accuracy...
GPT-5 specs and pricing
- Provider: OpenAI
- Released: August 7, 2025
- Context window: 400K tokens
- Max output: 128K tokens
- Input: text, images, files
- Output: text
- Price: $1.25 input / $10 output per 1M tokens
- Reasoning: yes
- Tool calling: yes
FAQ
- How much does GPT-5 cost? GPT-5 costs $1.25 per million input tokens and $10 per million output tokens through OpenRouter. In todo.is a typical agent step costs about 4.9 credits ($1 = 100 credits).
- What is the context window of GPT-5? GPT-5 can read up to 400K tokens at once and write up to 128K tokens in one reply.
- Can I use GPT-5 without coding? Yes. In todo.is you pick GPT-5 as your agent's model and write to-dos in plain words, on the web, the Android app, WhatsApp or Telegram. No API key needed: credits are included, or you can bring your own key.
JavaScript is required to use the todo.is app.