Anthropic launched Claude Fable 5 and Claude Mythos 5 with 1M context and 128k max output.

Long-context builds get default 1M context and 128k max output on Anthropic’s most capable widely released model.

Fable 5 sits beside Mythos 5 for Project Glasswing participants, so public builds and gated tests share the same context ceiling.

• Jul 24, 2026ChatGPT Voice is now available in Work and Codex in the ChatGPT desktop app.
• Jul 24, 2026OpenAI pricing page removed prior Business and Enterprise plan text.
• Jul 24, 2026Anthropic model card no longer lists Claude Fable 5 and Claude Mythos 5.

This is the world we build in. It moves this fast. We move with it.