GPT-5.6 Sol
Developed by OpenAI, GPT-5.6 Sol is a flagship model designed for complex reasoning, multi-step coding, and agentic workflows. It supports input from text, files, and images, and features an extensive context window for handling large-scale information.
GPT-5.6 Sol specs and pricing
- Provider: OpenAI
- Released: July 9, 2026
- Context window: 1.1M tokens
- Max output: 128K tokens
- Input: files, images, text
- Output: text
- Price: $4.00 input / $20 output per 1M tokens
- Reasoning: yes
- Tool calling: yes
What GPT-5.6 Sol is good at
- Complex software development and coding tasks
- Multi-step reasoning and analytical workflows
- Processing large documents or image-heavy data sets
To-dos to try with GPT-5.6 Sol
- Analyze a multi-file codebase and suggest a refactoring plan for a specific module
- Upload a technical diagram and a project brief to generate a step-by-step implementation guide
- Process a lengthy set of logs to identify the root cause of a system error
FAQ
- What is the primary focus of the GPT-5.6 Sol model? This model is specifically designed for complex reasoning, coding projects, and agentic workflows.
- Can this model process visual information? Yes, GPT-5.6 Sol accepts image files as input alongside text and standard documents.
- How much does GPT-5.6 Sol cost? GPT-5.6 Sol costs $4.00 per million input tokens and $20 per million output tokens through OpenRouter. In todo.is a typical agent step costs about 14 credits ($1 = 100 credits).
- What is the context window of GPT-5.6 Sol? GPT-5.6 Sol can read up to 1.1M tokens at once and write up to 128K tokens in one reply.
- Can I use GPT-5.6 Sol without coding? Yes. In todo.is you pick GPT-5.6 Sol 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.