# OpenAI introduces GPT-5.6 to challenge Claude Mythos 5 - SiliconANGLE

> OpenAI introduces GPT-5. 6 to challenge Claude Mythos 5 OpenAI Group PBC today introduced GPT-5. 6, a new series of large language models that it says can outperform Claude Mythos 5 across certain coding tasks.

- **Source:** [Siliconangle](https://siliconangle.com/2026/06/26/openai-introduces-gpt-5-6-challenge-claude-mythos-5/?utm_source=gearopen.com&utm_medium=referral&utm_campaign=feed&utm_content=6a40406ad2e4a413fa9a34a6)
- **Published:** 2026-06-27
- **Category:** AI & Bots
- **Tags:** #openai #claude #anthropic #ai
- **Canonical:** http://localhost:4321/a/6a40406ad2e4a413fa9a34a6

---

_GearOpen's distilled summary. The full original article is published at Siliconangle (source link above); GearOpen does not republish the source's full text._