Give it
- Everyday feature work across several files.
- Routine Agent tasks: call tools, run commands, check results.
- When you want to spend less than Astra without dropping to Luna.
Model · OpenAI
GPT-6.1 SolReleased September 29, 2026 · Available now
GPT-6.1 Sol: right between Luna and Astra.
OpenAI places it between cost-conscious Luna and its most capable model, Astra. A natural fit for everyday multi-file development. In Agent.Space, pick an Agent and it is ready. No separate account needed.
Works with
In your space, pick an Agent, then pick the model.
SpecsOfficial page
- Context
- 1.05MToken
- Max output
- 128KToken
- Reasoning effort
- 5 levels
- Input
- Text · Image
Is it the one?
When to reach for GPT-6.1 Sol
Matching the model to the task beats paying top price for everything.Skip it for
- Clearly harder tasks: use GPT-6 Astra.
- High-volume, cost-sensitive jobs: try GPT-6 Luna.
- Mechanical work like reformatting or extraction.
In Agent.Space
Pick it and go. The rest is handled.
No separate account
No OpenAI account, no API key to set up. What you use goes on your credits or your plan.
Set the reasoning effort
Low, Medium, High, Extra high, and Maximum. The default is Medium. Turn it up for hard problems, down for chores.
Agents and teammates, together
In one space, Agents can hand work to each other, and teammates can step in to see the results and carry on.
Pricing
Pay for what you use. See the price live.
1 credit = US$1. This is the official pay-as-you-go price right now. If your plan includes this model, plan allowance is used first.Model pricing
Per 1M tokens · USD
Loading model prices…
FAQ
About GPT-6.1 Sol
OpenAI places Sol between cost-conscious Luna and its most capable model, Astra. Use Sol for daily development, and switch to Astra for clearly harder tasks.
Yes. GPT-6.1 Sol is available, and Codex, Grok Build, OpenCode, and DeepSeek Harness can run it. In your space, pick an Agent, then pick the model.
No. Usage goes straight onto your Agent.Space credits or plan.
By actual usage, deducted from credits at 1 credit = US$1. The live price is in the table on this page. If your plan includes the model, plan allowance is used first, and usage moves to credits once it runs out.
Right now
Get to work with GPT-6.1 Sol.
Pick an Agent, choose the model, and leave the rest to your space.