GPT-6.1
Start with the GPT-6.1 model family, then explore Sol's pricing, access, API settings and upgrade options.
GPT-6.1 is OpenAI’s update to the GPT-6 series, introduced on September 29, 2026 with GPT-6.1 Sol. Sol is the confirmed GPT-6.1 model in the current official catalog. It serves coding, computer use and professional work through ChatGPT Work, Codex and the API. Open the GPT-6.1 Sol model page for prices, limits and a first API request.
GPT-6.1 models
| Model | What to explore | Details |
|---|---|---|
| GPT-6.1 Sol | Complex coding and repeated professional workflows | Pricing, access and API setup |
The wider GPT-6 model directory also covers Astra, the original Sol and Luna. Those model names remain useful when comparing workloads or reading an older example. A GPT-6.1 label on a new release does not rename the models used in previous tests.
GPT-6.1 release date and availability
OpenAI announced GPT-6.1 Sol on September 29, 2026. The launch lists Plus, Pro, Business, Enterprise and Edu access in Work and Codex, alongside API access. The release notes describe a rollout beginning with Pro and expanding to the other paid plans. Use the account’s model picker to check whether access has reached your installation; managed workspaces also have model permissions.
OpenAI’s announcement places Sol in Work and Codex rather than ordinary Chat. For a missing model, first check the product surface, current client and workspace permissions. The access guide explains the broader product and account checks; the Sol access section focuses on this release.
GPT-6.1 vs GPT-6: where to start
GPT-6.1 Sol upgrades the original GPT-6 Sol. OpenAI reports improvements across coding, professional work and computer use, with performance approaching Astra on selected evaluations. For your own work, compare a saved task with the same files, tools and success criteria before changing a default.
Choose the question that matches your decision:
- Moving from GPT-6 Sol? Read the Sol migration checks.
- Choosing between Sol and Astra? Use the model-specific comparison to design a task-level test.
- Looking for the original announcement? The September 29 launch report records what changed at release.
Follow GPT-6.1 updates
This page is the starting point for the series; the Sol page holds its current model reference. For dated product changes, browse GPT-6 news and the release timeline. Each model page carries its own verification date, while worked examples identify the model that actually produced the output.