Fast mode research preview now supports Claude Opus 4.7 with speed fast and a beta header.

Opus fast output is available on the newer model, with the same pricing, rate limits, and access path as Opus 4.6.

Builders using fast mode can move the same setup from Opus 4.6 to Opus 4.7 and join the waitlist.

• Aug 25, 2026OpenAI models page removed visible model selection documentation text.
• Aug 25, 2026Anthropic model card removed Claude Fable 5 and Claude Mythos 5 selection guidance
• Aug 25, 2026OpenAI removed business pricing copy listing GPT-5.6 and GPT-Image-2 rates.

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