Who is GPT-6.1 Sol for?

People who want the newer GPT-6 coding id on the same OpenAI plan.

Who is GPT-6 Sol for?

People who want the GPT-6 coding id below Astra on the same OpenAI plan.

High-volume turns where the efficient GPT-6 id is enough.

Claude Code users who want the claude-opus-5-5 id on the Anthropic plan.

Cheap loops and classification, not the default coding agent.

Roundup

The pick is GPT-5.6 Sol. Set that id if you are configuring Codex or Cursor now.

1. Our pick: GPT-5.6 Sol
Who this is for: Codex and Cursor users setting the model id for a coding agent.
gpt-5.6-sol is the id in the Codex config example and the Cursor guide.
GPT-5.6 Sol
2. GPT-6.1 Sol
Who this is for: People who want the newer GPT-6 coding id on the same OpenAI plan.
gpt-6.1-sol is OpenAI's newer coding id. Reasoning effort is low, medium, high, xhigh, or max. The Codex example still defaults to gpt-5.6-sol.
GPT-6.1 Sol
3. GPT-6 Sol
Who this is for: People who want the GPT-6 coding id below Astra on the same OpenAI plan.
gpt-6-sol is OpenAI's coding and agent id. The Codex example still defaults to gpt-5.6-sol. Listed rates load live.
GPT-6 Sol
4. GPT-6 Luna
Who this is for: High-volume turns where the efficient GPT-6 id is enough.
gpt-6-luna stays on the OpenAI plan beside gpt-6-sol. It is not a rename of gpt-5.6-luna.
GPT-6 Luna
5. Claude Opus 5.5
Who this is for: Claude Code users who want the claude-opus-5-5 id on the Anthropic plan.
Listed rates come from the live catalog.
Claude Opus 5.5
6. GPT-5.4 Mini
Who this is for: Cheap loops and classification, not the default coding agent.
gpt-5.4-mini is the mini id. Use it when Sol is more model than the task.
GPT-5.4 Mini

GPT-5.6 Sol is the recommendation. Codex and Cursor users setting the model id for a coding agent.

Who is GPT-5.6 Sol for?: Codex and Cursor users setting the model id for a coding agent.
Who is GPT-6.1 Sol for?: People who want the newer GPT-6 coding id on the same OpenAI plan.
Who is GPT-6 Sol for?: People who want the GPT-6 coding id below Astra on the same OpenAI plan.
Who is GPT-6 Luna for?: High-volume turns where the efficient GPT-6 id is enough.
Who is Claude Opus 5.5 for?: Claude Code users who want the claude-opus-5-5 id on the Anthropic plan.
Who is GPT-5.4 Mini for?: Cheap loops and classification, not the default coding agent.

GPT-5.6 Sol — Codex and Cursor users setting the model id for a coding agent.
GPT-6.1 Sol — People who want the newer GPT-6 coding id on the same OpenAI plan.
GPT-6 Sol — People who want the GPT-6 coding id below Astra on the same OpenAI plan.
GPT-6 Luna — High-volume turns where the efficient GPT-6 id is enough.
Claude Opus 5.5 — Claude Code users who want the claude-opus-5-5 id on the Anthropic plan.
GPT-5.4 Mini — Cheap loops and classification, not the default coding agent.