How to Get Free Unlimited GPT-6.1 Sol API Access

Looking for a coding model you can hammer all day without watching a quota counter? AgentRouter is handing out free API access to GPT-6.1 Sol, with no daily limit and no restricted hours. Setup is a sign-up, a key, and a few settings in your coding agent.

The access runs 24/7 and plugs into Codex or OpenCode, and it is aimed squarely at coding work. The only thing standing between you and it is a GitHub account.

What You Need

• A GitHub account to sign up with.
• A coding agent that takes custom providers, such as Codex or OpenCode.

Tutorial

1. Open https://agentrouter.org/register and sign up with your GitHub account.
2. Go to Console > API Keys and create a new key.
3. Add AgentRouter as a custom provider inside your coding agent.
4. Put https://agentrouter.org/v1 in the Base URL field.
5. Set the model name to gpt-6.1-sol.
6. On Codex, pick the Responses API option. This one is specific to Codex users, so skip it if you are running OpenCode.

Wrapping Up

You now hold a free key pointed at GPT-6.1 Sol, with no daily quota to run out mid-session and no access hours to plan around. Add it to Codex or OpenCode as a custom provider and put it on your next build. Both agents take it the same way, so the setup carries over if you switch between them.