GPT-5.6 Sol
solFast general-purpose model. Good at nearly everything.
Models
What each plan gets you.
GPT-5.6 Luna
lunaThe most economical one. Included in the free plan.
GPT-5.6 Terra
terraStronger at long reasoning and harder problems.
GPT-5.3 Codex
codeBuilt for code: refactors, tests, migrations.
Claude Opus 5
opusThe strongest model available. Limited seats.
Why Opus has limited seats
Our Opus throughput is about ten concurrent sessions for the whole platform. That is why there are exactly 10 seats rather than an unlimited plan. It is a hardware ceiling, not a sales tactic.