GPT 6.1 Sol

Near-Astra agentic coding at lower cost, 1M context

Try GPT 6.1 Sol in the Workbench

Run this model interactively, tune parameters, and compare outputs.

Model ID: gpt-6-1-sol

GPT 6.1 Sol is OpenAI’s GPT-6 generation reasoning model for complex coding, computer use, and professional work, delivering performance close to GPT 6 Astra at a much lower per-token price. It is the newer Sol model and succeeds GPT 6 Sol, and OpenAI recommends comparing it against Astra on your own tasks to weigh quality against cost.

It accepts text and images and supports configurable reasoning effort (low, medium, high, xhigh, and max), streaming, structured outputs, and function calling, with the web search, file search, image generation, code interpreter, hosted shell, apply patch, skills, computer use, MCP, and tool search tools. The none and minimal reasoning efforts are not supported, and tool calling requires the Responses API because Chat Completions works only without tools. Fine-tuning and predicted outputs are not available.

Metric	Value
Context Length	1,050,000 tokens
Max Output Tokens	128,000 tokens
Knowledge Cutoff	Apr 30, 2026
Multilingual	Yes

Example request

Use the Workbench as a request builder: configure parameters for this model in the UI, then open the API tab to copy the exact cURL or Python call.

Minimal

cURL

curl -X POST https://hub.oxen.ai/api/ai/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $OXEN_API_KEY" \
  -d '{
  "model": "gpt-6-1-sol",
  "messages": [
    {
      "role": "user",
      "content": "Hello, what can you do?"
    }
  ]
}'

Basic parameters

cURL

curl -X POST https://hub.oxen.ai/api/ai/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $OXEN_API_KEY" \
  -d '{
  "model": "gpt-6-1-sol",
  "messages": [
    {
      "role": "user",
      "content": "Hello, what can you do?"
    }
  ],
  "temperature": 0.7,
  "max_tokens": 1024,
  "stream": false
}'

All parameters

cURL

curl -X POST https://hub.oxen.ai/api/ai/chat/completions \
  -H "Content-Type: application/json" \
  -H "Authorization: Bearer $OXEN_API_KEY" \
  -d '{
  "model": "gpt-6-1-sol",
  "messages": [
    {
      "role": "user",
      "content": "Hello, what can you do?"
    }
  ],
  "temperature": 0.7,
  "max_tokens": 1024,
  "stream": false,
  "top_p": 1.0,
  "frequency_penalty": 0,
  "presence_penalty": 0
}'

Fetch model details

The models endpoint returns the full model object, including its json_request_schema.

curl -H "Authorization: Bearer $OXEN_API_KEY" https://hub.oxen.ai/api/ai/models/gpt-6-1-sol

Request parameters

This model follows the standard OpenAI chat completions request body. See the chat completions reference for the full parameter list.