GPT-6.1 Sol

GPT-6.1 Sol is an upgrade to GPT-6 Sol from OpenAI, positioned below the flagship GPT-6 Astra in the GPT-6 series. It is suited for agentic coding, computer use, document-heavy professional work, and multi-step business workflow automation, and approaches Astra-level results on these tasks at a much lower cost. Compared with GPT-6 Sol, it makes fewer factual errors and is more reliable at respecting explicit restrictions and user intent during agentic tasks.

ChatOpenAI1M tokens$2.1801 / $10.9006 · 1M

openai/gpt-6.1-sol

Context
1M tokens
Completion cap
128,000
Tools
Yes
JSON
Yes
Released
2026-09-29

Call it from Geek Hub

Same OpenAI SDK. Change the base URL and the model id.

curl https://api.geekhub.mx/v1/chat/completions \
  -H "Authorization: Bearer $GEEKHUB_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "openai/gpt-6.1-sol",
    "messages": [{"role": "user", "content": "Hola"}]
  }'
Get an API key

Frequently asked questions

What is GPT-6.1 Sol?
GPT-6.1 Sol is an upgrade to GPT-6 Sol from OpenAI, positioned below the flagship GPT-6 Astra in the GPT-6 series. It is suited for agentic coding, computer use, document-heavy professional work, and multi-step business workflow automation, and approaches Astra-level results on these tasks at a much lower cost. Compared with GPT-6 Sol, it makes fewer factual errors and is more reliable at respecting explicit restrictions and user intent during agentic tasks. GPT-6.1 Sol runs on the Geek Hub API (OpenAI-compatible). Model id: openai/gpt-6.1-sol.
Is GPT-6.1 Sol free?
No. Input is $2.1801 per 1M tokens and output is $10.9006 per 1M tokens on Geek Hub (markup included).
What is the context length of GPT-6.1 Sol?
GPT-6.1 Sol has a 1M tokens context window. It supports up to 128,000 completion tokens.
Does GPT-6.1 Sol support tool calling and structured outputs?
GPT-6.1 Sol accepts tools and tool_choice for function calling. It also supports structured outputs via a JSON schema in response_format.
When was GPT-6.1 Sol released?
GPT-6.1 Sol was released on 2026-09-29.

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