GPT 5.5 & Fable now available in AI Chat

We just shipped two of the most requested models in Content24 AI Chat: GPT 5.5 and Fable. If your team lives in chat for drafting, research, rewriting, and brainstorming, this update is meant to feel immediately useful — not like another model toggle buried in settings.

Why we added GPT 5.5

GPT 5.5 is built for the kind of work marketing and content teams actually do every day: long-form reasoning, structured outlines, nuanced rewrites, and multi-step thinking without losing the thread. In practice, that means fewer back-and-forth prompts when you're turning a brief into a blog, tightening messaging for a landing page, or pressure-testing campaign angles before they go to design.

Compared with earlier GPT generations, teams in beta told us GPT 5.5 felt more consistent when holding brand voice across longer outputs. That's the bar we care about — not benchmark scores on a slide deck.

Meet Fable — a creative model for storytelling

Fable is the other half of this release. Where GPT 5.5 excels at precision and structure, Fable leans into narrative flow, emotional tone, and creative variation. Think campaign hooks, founder stories, social captions with personality, and first drafts that don't read like they were assembled from a template.

• Launch announcements that sound human, not corporate
• Short-form social copy with distinct voice
• Story-driven email sequences
• Creative explorations before you commit to a final angle

The point isn't to replace your writers. It's to give them a faster starting line — especially when deadlines are tight and you need three directions, not one.

Pick the right model for the job

Content24 AI Chat lets you switch models inside the same conversation. That matters because real work rarely stays in one lane. You might open with Fable for hooks, switch to GPT 5.5 to expand the winner into a full article, then pull key lines into AI Writer templates or a workflow without copying between tabs.

Quick guide

• Use GPT 5.5 for research summaries, SEO briefs, technical explainers, and edits that need logic
• Use Fable for brand storytelling, campaign concepts, and copy that needs warmth or edge
• Use side-by-side chat when you want two models to stress-test the same prompt

Better context, fewer restarts

Both models inherit the same workspace context you already use in Content24 — prior messages, uploaded references, and project notes where enabled. The goal is simple: less re-explaining, more producing.

If you're on a team plan, shared chat history and libraries make it easier for strategists, writers, and designers to pick up the same thread without Slack screenshots and doc links scattered everywhere.

What's next

GPT 5.5 and Fable are available today on all paid plans, with trial access on eligible accounts. We'll keep expanding the model lineup in AI Chat — the same way we do for AI Images, AI Video, and AI Audio — so you can stay on one subscription instead of chasing separate tools.

New to Content24? Start free and open AI Chat from your dashboard. Already on the platform? Update your default model in chat settings, or switch per message from the model picker.

Questions about plans or team rollout? Book a demo and we'll walk you through the setup that fits your stack.