Is GPT 5.6 better than GPT 5.5?

GPT 5.6 is OpenAI's newer flagship and generally reasons and plans a bit better than GPT 5.5 on hard, multi-step work. Both remain available in Tab's picker, so you can compare them on the same brief and keep the better result.

GPT 5.6 vs Claude Opus 4.8 — which should I use?

Use GPT 5.6 for complex, multi-stage projects that lean on reasoning and world knowledge. Use Claude Opus 4.8 for writing-heavy, taste-sensitive work. In Tab you can run both on the same brief and keep the better result.

Is GPT 5.6 worth the premium over GLM 5.2?

For genuinely hard, multi-step projects, yes. For everyday briefs and high-volume agent turns, GLM 5.2 does most of the job at a fraction of the cost — so reserve GPT 5.6 for the work that needs flagship reasoning.

How do I select GPT 5.6?

Open the agent model picker at the bottom of the prompt bar on the Tab homepage and choose GPT 5.6. The choice persists per chat, so you can run different models on different projects.

Is GPT 5.6 available on every plan?

Yes. GPT 5.6 is available across Free, Pro, and Business plans; usage draws from your plan's credit pool. See /pricing for details.

GPT 5.6 Review: OpenAI's Latest Flagship Agent Model in 2026

OpenAI's GPT 5.6 raises the bar on reasoning and tool use in Tab's Agent mode. Here's how it compares to GPT 5.5, Claude Opus 4.8, and GLM 5.2 on real creative work.

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