Quick AI News - 09/29/2026 - Sonnet 5.5 Ships, OpenAI Shelves a Model, and Anthropic's IPO Prospectus Leaks

Opublikowano: 2026-09-29

AI moved fast in the span of a single day. This quick news update from Learn AI in Bits covers three of the biggest developments in AI from September 28 and 29, 2026, plus a handful of smaller launches worth knowing about. Anthropic released Claude Sonnet 5.5 on September 28, keeping the same $2/$10 per million token pricing as Sonnet 5 while running more than 30% faster, needing fewer tokens per task, and posting sharp benchmark gains, including 70.6% on Terminal-Bench 4.0, up from Sonnet 5's 10.3%, and 80.1% on OSWorld 2.1, with a 1-million-token context window. Claude Haiku 5.5 is teased for the coming...