InjazAI

OpenAI released GPT-5.6 family (Luna, Terra, Sol) that outperforms Claude Fable 5 on long-running agentic tasks at lower cost, making AI more efficient for MENA enterprises.

1 min read
Breaking

OpenAI launches GPT-5.6 family: Luna, Terra, Sol with performance and pricing improvements

Launch of GPT-5.6 Family

FAQ

What is the GPT-5.6 family?

It is OpenAI's latest publicly available model family, consisting of three sizes: Luna (smallest and cheapest), Terra (medium), and Sol (largest and most powerful).

How does GPT-5.6 compare to Claude Fable 5?

GPT-5.6 Sol outperforms Claude Fable 5 on Agents' Last Exam by 13.1 points, but Fable 5 leads on SWE-Bench Pro (80% vs 64.6%).

Should MENA teams adopt GPT-5.6 now?

Yes, especially for long-running agentic tasks, as the models offer better performance at lower cost, making them suitable for enterprises seeking efficiency.

What are the new API features in GPT-5.6?

They include Programmatic Tool Calling, Multi-agent, and Prompt cache breakpoints.

Source: Simon Willison (LLM & tools)

AI-assisted content, human-reviewed.