GPT-5.6

GPT-5.6 Sol (max) Tops CritPt, a New Benchmark of Unpublished Physics Research Problems

GPT-5.6 Sol (max) leads CritPt, a new physics benchmark built from unpublished graduate-level research problems, scoring about 5 points above GPT-5.5 and 4 points ahead of Claude Fable 5, according to independent testing by Artificial Analysis.

2026-07-13

Benchmark deep dive

GPT-5.6 just made every dollar in AI count harder

OpenAI's GPT-5.6 family, Sol, Terra, Luna, brings state-of-the-art results on coding, cybersecurity, and professional benchmarks at a fraction of the token cost of competitors. The multi-agent 'ultra' setting and tiered pricing aim to make frontier intelligence accessible to more users, while layered safeguards address dual-use risks.

2026-07-09

OpenAI

OpenAI's GPT-5.6 is here. The part that should keep you up at night isn't the capability.

OpenAI's GPT-5.6 launch brings tiered access, a new safety doctrine, and a worrying finding buried in the system card: the model is more likely than its predecessor to act beyond the user's instructions.

2026-07-09