Mason Johnson

September 22, 2026

New Models in Jasper Agent Studio: GPT-6 Sol, GPT-6 Luna, and Claude Opus 5.5

Jasper Agent Studio now supports GPT-6 Sol, GPT-6 Luna, and Claude Opus 5.5, each grounded in your company's knowledge and brand guardrails through Jasper IQ.

The Latest Frontier Models, Grounded in Your Company's Intelligence From Day One

Key takeaways

  • Jasper Agent Studio now supports three new AI models: GPT-6 Sol and GPT-6 Luna from OpenAI, and Claude Opus 5.5 from Anthropic.
  • Each model fits a different kind of agent work: GPT-6 Luna for high-volume workflows, GPT-6 Sol for complex decisioning, and Claude Opus 5.5 for brand-critical execution.
  • Every model in Jasper runs on Jasper IQ, so company knowledge, audience context, and brand guardrails travel with every agent, whichever model does the work.

A better model ships every few weeks. But access to a better model doesn't change what your marketing team can accomplish on its own.

A model on its own doesn't know your products, your buyers, or what good looks like for your brand. It doesn't know which opportunities matter most or which decisions need a human in the loop. That's the gap between AI experimentation and AI adoption, and a smarter model doesn't close it by itself.

Jasper does. Every agent in Agent Studio runs on Jasper IQ, so when a new model arrives, your agents get smarter immediately, without anyone re-teaching them your business. And because Jasper isn't tied to one model provider, you're never locked into one frontier lab's roadmap.

What New Models Are Available in Jasper Agent Studio?

GPT-6 Sol. GPT-6 Sol is OpenAI's mid-tier model, bringing GPT-6 Astra's advances in professional work, factuality, and coding to a faster, more affordable tier. It makes about half as many mistakes as its predecessor on OpenAI's factuality evaluation. For agents that analyze signals and decide what to act on, fewer mistakes means more decisions your team can trust.

GPT-6 Luna. GPT-6 Luna is OpenAI's fastest, highest-volume tier. It's optimized for fast responses and higher volume, making it ideal for always-on agents that process large volumes of signals, pages, or products.

Claude Opus 5.5. Claude Opus 5.5 is Anthropic's new flagship model. It performs at the level of Claude Fable 5.1 on most work while costing 40% less to run than Opus 5. It also leads with the most important information and uses less jargon more consistently.

Which Model Should I Use for My Agent?

The right model depends on the job your agent is responsible for. Here's a simple starting point.

  • Always-on, high-volume workflows. Start with GPT-6 Luna for agents that monitor, extract, summarize, or localize at scale, where speed and throughput matter most on every cycle.
  • Multi-step decisioning. Try GPT-6 Sol for agents that combine signals with company context to prioritize what matters, like analyzing AI-search visibility gaps or researching competitor moves before recommending an action.
  • Brand-critical execution. Try Claude Opus 5.5 for agents that act on your behalf in high-stakes work, like campaign development or product messaging.
Which model to use for each kind of Jasper agent
GPT-6 Luna GPT-6 Sol Claude Opus 5.5
Best Jasper agent type High-volume, always-on work Multi-step decisioning Brand-critical execution
What the model does well Fast responses at high volume Weighs signals against company context to support decisions, with about half as many mistakes as its predecessor on OpenAI's factuality evaluation Performs at Claude Fable 5.1's level on most work, leads with the key point, and uses less jargon
Example agents you could build in Agent Studio Agents that monitor signals, summarize content, or localize pages and products at scale Agents that analyze AI search visibility gaps or research competitor moves before recommending an action Agents that develop campaigns or draft product messaging

Still not sure which model to select? Run the same agent on two models, compare results, and keep the winner. If you're working with Jasper's forward-deployed team, they can help you design that evaluation and set the standard each agent should meet.

Frequently Asked Questions (FAQ)

Do I need to reconfigure my brand context when I switch models?

No. Brand voice, style guides, audiences, knowledge, and products live in Jasper IQ, not in the model. Every model in Agent Studio uses the same governed context automatically.

Does Jasper lock me into one AI provider?

No. Agent Studio supports models from multiple providers, including OpenAI and Anthropic, so teams can choose the best model for each agent and switch as new models are released.

Can I use the new models outside the Jasper app?

Yes. Agents built in Agent Studio are available through the Jasper API and Jasper MCP, so the new models reach the systems where your team already works.

How do I get started?

GPT-6 Sol, GPT-6 Luna, and Claude Opus 5.5 are available now in the Jasper Agent Studio.

  • You already have agents in Studio. Open an agent, switch the model, and run it on a real task to compare results against your current setup.
  • You're building a new agent. Start in Agent Studio, choose the model that matches the work, and let Jasper IQ supply the context and guardrails.
  • You work outside the Jasper interface. Agents built in Studio are also available through the Jasper API and MCP, so the new models reach the systems where your team already works.
  • You're new to Jasper. Book a demo with our team to see how Jasper puts the latest models to work across your marketing organization.

Jump into Jasper to start building with the new models, explore the Success Center for detailed guidance, or book a demo with our team to see it in action.

Written by:

Mason Johnson

Technical Product Marketing Manager

Smiling man with short brown hair and beard wearing a blue plaid suit jacket and white shirt.

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https://www.jasper.ai/blog/new-models-in-jasper-agent-studio-gpt-6-sol-gpt-6-luna-and-claude-opus-5-5