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Updated: September 30, 2026 GPT-6.1 Sol is an upgrade to GPT-6 Sol. OpenAI reports improvements in agentic coding, computer use, and professional work, with performance approaching GPT-6 Astra on selected evaluations. It suits demanding tasks where you want to compare capability, latency, and usage before choosing a model. BetterToken now offers the Model ID gpt-6.1-sol. Check the model plaza for current availability and BetterToken pricing.

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Highlights

  • Coding and agents: use it for multi-file changes, debugging, and longer software-engineering tasks.
  • Computer and professional work: OpenAI reports gains on application workflows and complex documents over GPT-6 Sol.
  • Large context: OpenAI lists a 1,050,000-token context window and up to 128,000 output tokens. Your client and route may impose lower limits.
  • Adjustable reasoning: low, medium, high, xhigh, and max are supported; none and minimal are not.

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Connect it

  1. Create a BetterToken API Key.
  2. For Codex CLI or another OpenAI-compatible client, set the Base URL to https://bettertoken.ai/v1 and the Model ID to gpt-6.1-sol.
  3. Use the Responses API when your workflow needs tool calling. OpenAI documents Chat Completions support for this model without tool calling.
  4. Test a representative task before switching an existing workflow.
For Claude Code, use the Anthropic-protocol Base URL https://bettertoken.ai with the same Model ID. See the Claude Code setup guide or Codex CLI setup guide for client-specific steps.

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Official sources